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[Powered by Google Translate] [ROCK MUSIC]

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[MUSIC - "HAPPY PAMOJA" turtles]

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DAVID Malan: Leo, sisi kuanza utafutaji wetu wa

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misingi ya sayansi ya kompyuta na utangulizi wetu,

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sasa, ni sanaa ya programu, ambayo kwamba ni

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mfano mmoja tu.

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Lakini katika ven wa kutatua matatizo, kujua kwamba

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CS50 wa jadi Puzzle Siku ni kesho.

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Kama umefanya bado RSVPed ajili ya tukio hili, unaweza kwenda

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cs50.net/rsvp.

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Unaweza kuleta timu ya mbili au tatu au nne.

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Utakuwa changamoto na matatizo kama moja ulizoziona

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hadi pale mwanzo.

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Matatizo yote mpya mwaka huu kama wewe walizokula mwaka jana, na wewe

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watapata nafasi kisha kushinda zawadi ya baadhi Fabulous.

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Kati yao, Wii na vyeti baadhi ya zawadi na kama,

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wakati wote kunyongwa nje na wanafunzi CS50 na wanafunzi

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na pizza na kuungana.

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Hivyo zaidi juu ya kesho kwamba kama ungependa.

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>> Hii basi ni CS50, kwa wale wa wewe kujiunga na sisi kwa

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mara ya kwanza.

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Na kujua kwamba kweli hii ni hasa nia ya kupata

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wewe kupitia kozi hii mwisho wake wa mwisho, ambapo kiwango wewe

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itakuwa na si tu ufahamu wa haya

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misingi ya sayansi ya kompyuta, lakini utakuwa na

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hii sana vitendo ujuzi kuweka kwamba unaweza kisha kuchukua nyuma

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idara yako mwenyewe, kama ni uhandisi na sayansi,

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kutumiwa hisabati, sayansi ya michezo, asili

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sayansi, au kama.

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Hakika, nini ili kusisimua kuhusu sayansi ya kompyuta hizi

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siku ni kwamba ni hivyo tu zinazotumika kwa

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kila aina ya mashamba.

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Na hata kama leo, sisi tu scratch ya uso wa

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jadi sana programu lugha inayojulikana kama C, tutaweza

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badala kuangalia kitu kinachoitwa Scratch kitu fulani na

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ambayo kwamba hadithi kuki upendo ulitekelezwa na mmoja wa yako

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watangulizi katika miaka ya nyuma, kwa kuwaambia hadithi, kwa kuunda michezo,

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kujenga sanaa maingiliano, na kwa kweli kuanza wrap wetu

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akili kuzunguka baadhi ya constructs msingi kwamba

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zinasababisha programu lakini katika hali halisi, kama utaona, kwamba

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kiasi kidogo inatisha, hiyo ni kidogo sana arcane, kuliko utaona

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kabla ya muda mrefu.

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Na kutambua, pia, kwa wale tu kujiunga na sisi hii

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muhula, misemo ambayo sisi kumalizika hotuba ya Jumatano,

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si hivyo muhimu ambapo wewe kuishia jamaa na yako

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wanafunzi katika darasa hili, lakini ambapo, hadi kufikia mwisho wa muhula

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katika wiki 11, kuishia jamaa na wewe mwenyewe haki hii siku sana.

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>> Hivyo bila wasiwasi zaidi, hii pia ni thamani kubainisha kuwa

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walio chini ya starehe, wale mahali fulani katika kati, ni

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pia, kwa kubuni ya kozi hii, si katika hasara yoyote

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vis-a-vis wale vizuri zaidi

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kuja katika darasa hili.

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Kama utaona zaidi ya wiki ijayo, tuna tofauti

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tracks kwa ajili ya background disparate nyuma, sehemu kwa wale

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chini ya starehe, vizuri zaidi, wale mahali fulani

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kati.

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Kama utaona mwishoni mwa wiki hii na wiki ijayo, matoleo mawili ya

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wengi tatizo seti katika toleo wote standard na hacker hivyo

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kwamba wote wanaweza kujitegemea chagua chini njia ambayo wewe

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ni vizuri zaidi.

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>> Kwa hiyo leo, sisi kupiga mbizi katika programu hii

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lugha inayoitwa Scratch.

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Ni graphical programu lugha, na bado

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sawa sifa za baadhi ya lugha za ngazi za juu tutaweza

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kuchunguza baadaye katika muhula, kati yao C na

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JavaScript na PHP.

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Lakini ni kwenda kuruhusu sisi kuepuka baadhi ya distractions

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mapema ya syntax, mambo kama semicolons, mabano,

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na nyingine arcane maelezo kwamba, katika mtazamo wa kwanza, si tu

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wakati wote kielimu ya kuvutia na huwa na kupata katika

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njia ya kutoka ufahamu baadhi ya msingi.

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Katika suala la muundo sasa msaada mbele, barabara hii

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chombo, CS50 Diskutera, ambayo itaunganishwa juu ya kozi

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tovuti baadaye leo, ni online majadiliano jukwaa katika

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ambayo wewe utakuwa na uwezo wa kuuliza maswali ya kila mmoja na

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wafanyakazi, na pia ni chombo, kama tutaweza kuona wiki ijayo,

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kwamba tutaweza kutumia kabisa integratedly katika

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masaa ya ofisi pia.

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Hakika, ofisi masaa kuanza Jumatatu, na kusema ukweli, kwanza

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wiki ya masaa ya ofisi ni haki Asili muhimu.

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>> Sidhani utapata Scratch yote inaccessible.

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Ni badala binafsi maelezo, kama tutaweza kuona, na hivyo kile

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tutaweza kuitumia kwa leo ni kwa dondoo baadhi ya

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msingi mawazo ambayo, basi, yanaendelea katika

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mapumziko ya muhula.

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Lakini kuanzia Jumatatu, saa 8:00 mchana kupitia 11:00 itakuwa

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masaa ya ofisi katika Annenberg juu ya mapumziko ubongo.

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Sectioning mbili itaanza jioni hii, hivyo wakati mwingine hii

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mwishoni mwa wiki, kwenda cs50.net/section, na wewe itabidi

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kuulizwa maswali kadhaa.

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Kati yao, jinsi gani unaweza kuelezea yako

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faraja ngazi kama ya leo?

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Hakuna ngumu, kwa haraka kama utawala kwa aliye katika ambayo ndoo.

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Ni tu aina ya kitu ambayo pengine kujua kama wewe

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ni miongoni mwa walio chini ya starehe au vinginevyo.

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>> Na sasa, walkthroughs.

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kuweka tatizo vipimo kwa ajili ya wiki hii, wote kiwango

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na hacker toleo sawa, ni online saa cs50.net kama ya sasa.

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Na utaona kwamba kwanza ya matoleo haya,

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toleo la kawaida kila wiki, unaambatana na kitu sisi

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piga walkthrough code, kikao wakiongozwa na moja ya

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mafundisho kozi ya wenzake kwa kuongoza wewe kupitia, kutoa

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vidokezo juu, na kupata chini ya njia fulani linapokuja

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kwa kuanzia seti hizi tatizo.

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Hivyo kwa kila moja ya tatizo hizi seti, kama wewe ni milele kutaka

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kwa ajili yako mwenyewe ambapo mimi kuanza, unaanza na hizi

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walkthroughs.

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Na kwa kweli, naomba kuanzisha Zamyla Chan, hii

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mafundisho ya mwaka wenzake ambao watakuwa kuongoza kila mmoja na kila

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moja ya walkthroughs haya.

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Zamyla?

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>> [Applause]

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ZAMYLA CHAN: Oh, hi, kila mtu.

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Jina langu ni Zamyla.

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Mimi nina junior kusoma uhandisi katika Winthrop House.

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Lakini mimi kujaribu na inafaa katika kama wengi kozi za sayansi ya kompyuta kama mimi

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unaweza, ambayo ni kwa nini mimi nina kweli msisimko kwa kuwa kuongoza hii

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mwaka walkthroughs.

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Walkthroughs, kwa ajili yangu, walikuwa sehemu muhimu ya CS50 yangu

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uzoefu.

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Wakati walkthrough, kwa ajili ya kuweka p-kila, tutaweza kwenda kupitia

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tatizo kuweka pamoja, kuangalia juu ya matatizo, aina ya

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wagawe juu katika kuumwa manageable.

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Mimi nitakupa vidokezo mbinu, kwa ajili ya kupata

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kupitia na kupata kuanza.

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Natumaini kukuona yote katika walkthroughs.

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Kama huwezi kufanya hivyo katika mtu, basi

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tafadhali kufanya tune katika online.

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>> DAVID Malan: Mufti.

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Asante, Zamyla.

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Hivyo kutambua kwamba walkthroughs ni kweli, siku ya Ijumaa

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alasiri, lakini hii ni kwa makusudi kwa kubuni ili kwamba

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hata kama msiotaka kuhudhuria darasa juu ya Ijumaa

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alasiri, video itakuwa juu wote haraka zaidi juu ya

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mwishoni mwa wiki.

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Hivyo kutambua kwamba cs50.net atakuwa yote ya wa Zamyla

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walkthroughs.

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Na kwamba kuna tarehe ya leo na wakati, 3:00,

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Harberd Hall, 104.

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Na baadhi ya wenzake mafundisho pia tayari

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baadhi hotuba kwa wewe kuwepo kwa kuwapa kidogo ya

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mtazamo kama yale uzoefu wao kuja ndani na

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kwenda nje ya CS50 ilikuwa kama.

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Hivyo kama tunaweza dim taa kwa muda tu, nimewapeni

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baadhi ya wafanyakazi wa CS50.

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>> JACKSON STEINKAMP: Mimi alichukua CS50 mwaka jana kama Freshman katika

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kuanguka, na ni kabisa akapiga akili yangu.

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Nisingeli mfanya madarasa yoyote ya programu kabla,

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na kamwe alikuja na sayansi katika kompyuta yoyote

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uzoefu wakati wote.

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Na tu, nikasikia buzz kuhusu darasa na

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aliamua kuchukua hiyo.

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>> Julia MITELMAN: Ni kweli fun, kweli walioshiriki.

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Mimi bado, hadi leo hii -

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Mimi hivi karibuni tu niliona nina disketi kwamba Daudi alitupa

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siku yetu ya kwanza ya hotuba.

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Mimi nilikuwa Hung juu ya ukuta wangu.

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Hii pengine ni kidogo nerdy, lakini mimi Hung katika juu ya yangu

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ukuta wakati wa darasa kama ukumbusho wa jinsi ya baridi ilikuwa.

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>> TRAVIS Downs: Ni hivyo aibu.

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>> JACKSON STEINKAMP: Kompyuta sayansi ni kitu

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lazima kujaribu hata kama wewe si moja kwa

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sayansi ya jadi.

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Ni uzoefu wake mwenyewe, na CS50 kuhakikisha uko

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mkono vizuri kupitia kwa jeshi lake veritable ya TFS.

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>> ALI NAHM: Mimi alichukua kama Freshman, na hivyo mimi alifanya mengi

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ya marafiki wapya.

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Mimi pia got kuletwa na ukolezi hii nzima na

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nzima shule ya uhandisi, na hivyo mimi sana kupendekeza

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na kuwakaribisha kwa familia zetu CS50.

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>> YANIV YACOBY: CS50 tu inafundisha jinsi ya kutumia zana

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kwamba ni sana kupatikana.

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Wewe tu haja ya mbali, unahitaji browser mtandao, na wewe

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haja ya kujifunza kuandika baadhi ya kificho, na kweli unaweza kujenga

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nadhifu mambo.

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>> Karen Xiao: Ni hivyo tu baridi na kuwa na uwezo wa kufanya kitu

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na kuwa na watu kuitumia na kuwa na watu kuona hivyo, na kwamba

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nini mimi kweli upendo kuhusu hilo.

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>> Tim MCLAUGHLIN: - maana ya jamii, nadhani, katika hii

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kozi zaidi ya shaka yoyote nimekuwa kuchukuliwa hadi sasa.

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Wewe si kuchukua tu mwingine -

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wewe si kujaza mwingine mahitaji.

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Wewe si tu kwenda mihadhara na kwenda kwa sehemu.

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Lakini unafanya tani ya mambo ambayo ni wote kuhusu

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programu na wote kuhusu teknolojia, lakini haina

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kweli kujisikia kama darasa zaidi ya muda.

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>> TRAVIS Downs: Siku ya kwanza, wao mitupu nje keki, na

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Mimi mara moja kuuzwa.

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>> JACOB PRITT: Free pipi na pizza.

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>> ZAMYLA CHAN: - bila kujali maslahi yako ngazi, nadhani

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kwamba CS50, itabidi kuwa na furaha, na wewe utakuwa na kielimu

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drivas.

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>> MARK GROZEN-SMITH: Ni daima chama katika darasa, na ni

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kila chama usiku kazi kwenye seti p-yako.

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>> JACKSON STEINKAMP: Kila muda kumaliza kuweka tatizo,

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kujisikia kama wewe kumaliza ya mradi.

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>> MELISSA Niu: Ilikuwa Freshman mwaka, na mimi ilifanyika ununuzi.

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Mimi alikuwa wangu nne madarasa tayari, na mimi nilikuwa katika Annenberg.

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Na mimi mapema ndani rafiki, na anasema, hey, mimi nina ununuzi

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darasa hili aitwaye CS50, na unapaswa kuja na mimi.

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Kuishia kuchukua ni kwamba kuanguka, na baada ya darasa kwamba, mimi

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walidhani labda nitakacho madogo katika CS.

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Lakini hapa mimi, miaka mitatu baadaye, bado kusoma kompyuta

204
00:09:33,760 --> 00:09:36,680
sayansi na kweli kufanya hivyo kama kubwa, na mimi kupendwa kila

205
00:09:36,680 --> 00:09:37,780
wakati wa hayo.

206
00:09:37,780 --> 00:09:39,030
>> Rob Bowden: Mimi sijui.

207
00:09:46,408 --> 00:09:48,060
>> ALI NAHM: Hebu kuona.

208
00:09:48,060 --> 00:09:49,200
>> MELISSA Niu: craziness.

209
00:09:49,200 --> 00:09:50,610
>> SPIKA 1: Mimi najisikia kama ningependa kuwa sana cliche.

210
00:09:50,610 --> 00:09:52,530
Ningependa kusema tu, kama, kutisha.

211
00:09:52,530 --> 00:09:53,540
>> YANIV YACOBY: Upatikanaji.

212
00:09:53,540 --> 00:09:55,080
>> JACOB PRITT: Free pipi na pizza.

213
00:09:55,080 --> 00:09:57,310
>> TRAVIS Downs: Je, si kugeuka chini darasa kwamba mikono nje ya keki.

214
00:09:57,310 --> 00:09:58,510
>> Tim MCLAUGHLIN: juhudi.

215
00:09:58,510 --> 00:10:00,040
>> VIPUL SHEKHAWAT: Essential.

216
00:10:00,040 --> 00:10:02,636
>> Rob Bowden: Hebu fikiria jibu.

217
00:10:02,636 --> 00:10:04,480
Mimi nadhani got kitu.

218
00:10:04,480 --> 00:10:07,092
Oh, mungu.

219
00:10:07,092 --> 00:10:13,370
Yeah, jina langu Rob Bowden, na hii ni CS50.

220
00:10:13,370 --> 00:10:16,340
>> [Applause]

221
00:10:20,810 --> 00:10:23,390
DAVID Malan: zote haki, hivyo hebu kuanza kuchora picha

222
00:10:23,390 --> 00:10:26,230
wa mwelekeo ambao tunaweza kwenda, na hebu kuanzisha

223
00:10:26,230 --> 00:10:28,190
dhana hii hapa inayojulikana kama pseudocode.

224
00:10:28,190 --> 00:10:29,560
Hivyo pseudocode si programu

225
00:10:29,560 --> 00:10:30,810
Lugha hata yenyewe.

226
00:10:30,810 --> 00:10:33,250
Ni kitu kiufundi per se, lakini ni tu aina ya

227
00:10:33,250 --> 00:10:36,490
ujumla njia ya kuonyesha uungwana mwenyewe just,

228
00:10:36,490 --> 00:10:39,730
uungwana algorithmically, uungwana procedurally, lakini bila

229
00:10:39,730 --> 00:10:42,570
kuwa na wasiwasi kuhusu lugha gani wewe ni kuonyesha

230
00:10:42,570 --> 00:10:43,150
mwenyewe in

231
00:10:43,150 --> 00:10:46,280
Ni baadhi ya mfano wa Kiingereza na lugha ya programu na

232
00:10:46,280 --> 00:10:48,790
ambayo kutokea kwa kuwa familiar, ili tuweze kuanza

233
00:10:48,790 --> 00:10:50,600
kuandika jambo la aina hii kama sisi kwenda.

234
00:10:50,600 --> 00:10:54,450
Na kwa kweli, Joseph, inaweza mimi kukopa wewe juu ya hatua ya kuwa

235
00:10:54,450 --> 00:10:55,490
mwandishi hapa?

236
00:10:55,490 --> 00:11:00,130
Mimi tumeenda mbele hapa mapema na wamesahau kuweka

237
00:11:00,130 --> 00:11:02,920
juu ya soksi baadhi ya leo, na hii utakuwa miongoni mwa zaidi yetu

238
00:11:02,920 --> 00:11:03,780
ridiculous mifano.

239
00:11:03,780 --> 00:11:04,580
>> Sasa, mimi haja ya wewe zaidi ya hapa.

240
00:11:04,580 --> 00:11:05,630
Mimi itabidi kufanya sehemu soksi.

241
00:11:05,630 --> 00:11:08,040
Hivyo hapa tuna kidogo scratch pedi.

242
00:11:08,040 --> 00:11:09,940
Hii ni literally tu TextEdit katika Mac.

243
00:11:09,940 --> 00:11:12,270
Sisi siyo kweli kwenda kuandika mpango runnable, lakini

244
00:11:12,270 --> 00:11:14,220
sisi ni tu kwenda kuanza sketching nje pseudocode makao

245
00:11:14,220 --> 00:11:17,830
juu ya baadhi ya shauri wewe kutoa na mimi hapa.

246
00:11:17,830 --> 00:11:20,760
Hivyo hapa ni rundo yangu ya soksi nyumbani.

247
00:11:20,760 --> 00:11:23,320
Sina soksi juu ya wakati mimi kuamka asubuhi, na sisi sasa

248
00:11:23,320 --> 00:11:26,280
haja ya kuandika mpango, algorithm ya aina, na ambayo

249
00:11:26,280 --> 00:11:27,900
kupata soksi haya juu ya miguu yangu.

250
00:11:27,900 --> 00:11:30,860
Na njiani, hebu angalia kama sisi safari juu, au kukutana,

251
00:11:30,860 --> 00:11:32,860
baadhi ya mawazo ya kwamba utaenda kuwa na kuanza

252
00:11:32,860 --> 00:11:35,470
kufikiri juu zaidi umakini wakati programu

253
00:11:35,470 --> 00:11:37,950
wasije programu yako si kuishi kabisa kama ilivyokusudiwa.

254
00:11:37,950 --> 00:11:39,580
>> Kwa hiyo mimi kukaa chini hapa.

255
00:11:39,580 --> 00:11:41,180
Mimi nimepata rundo yangu ya soksi.

256
00:11:41,180 --> 00:11:43,780
Nini jambo la kwanza busara binadamu ingekuwa

257
00:11:43,780 --> 00:11:46,600
kufanya wakati lengo ni kuweka juu ya jozi ya soksi?

258
00:11:46,600 --> 00:11:49,190
Mtu nipe hatua moja, na ni moja tu hatua.

259
00:11:49,190 --> 00:11:49,796
Yeah?

260
00:11:49,796 --> 00:11:50,690
Watazamaji: Bend chini.

261
00:11:50,690 --> 00:11:54,290
DAVID Malan: Bend chini, Sawa.

262
00:11:54,290 --> 00:11:55,540
Hatua mbili.

263
00:11:59,975 --> 00:12:00,645
Hatua mbili.

264
00:12:00,645 --> 00:12:01,840
Watazamaji: Pick up sock yako.

265
00:12:01,840 --> 00:12:03,220
DAVID Malan: Pick up sock yako.

266
00:12:03,220 --> 00:12:07,610
Sawa, hivyo kidogo utata hapa, na hii ni moja ya kwanza

267
00:12:07,610 --> 00:12:09,380
kikwazo vitalu kwamba sisi ni walidhani makusudi

268
00:12:09,380 --> 00:12:10,290
kukutana hapa.

269
00:12:10,290 --> 00:12:14,110
Ni kidogo utata, hivyo kuchukua sock yako.

270
00:12:14,110 --> 00:12:17,425
Fine, Nitachukua hii moja, lakini kompyuta, kutambua katika tu

271
00:12:17,425 --> 00:12:20,420
kidogo, si kwenda kuwa na kwamba aina ya silika ya binadamu tu

272
00:12:20,420 --> 00:12:21,490
kuchukua moja ya karibu.

273
00:12:21,490 --> 00:12:23,590
Sisi ni kwenda kuanza, kabla ya muda mrefu, akielezea

274
00:12:23,590 --> 00:12:24,610
wenyewe zaidi usahihi.

275
00:12:24,610 --> 00:12:26,600
>> Haki ya wote, hivyo hatua mbili ni pick up sock yako.

276
00:12:26,600 --> 00:12:27,520
Tutaweza kuchukua hiyo.

277
00:12:27,520 --> 00:12:28,620
Hatua ya tatu.

278
00:12:28,620 --> 00:12:29,532
Katika nyuma.

279
00:12:29,532 --> 00:12:30,900
Watazamaji: Find jozi vinavyolingana.

280
00:12:30,900 --> 00:12:32,060
DAVID Malan: Find jozi vinavyolingana.

281
00:12:32,060 --> 00:12:34,740
Sawa, hivyo hii ni nzuri.

282
00:12:34,740 --> 00:12:35,650
Mimi nilikuwa na kuchagua hii sock.

283
00:12:35,650 --> 00:12:39,200
Hivyo lengo ni kupata sock vinavyolingana, sasa, lakini kile

284
00:12:39,200 --> 00:12:39,990
haina maana?

285
00:12:39,990 --> 00:12:42,130
binadamu busara kuwa, kiasi kama Jumatano wakati mimi tu

286
00:12:42,130 --> 00:12:44,700
alijua jinsi ya kupata Mike Smith katika kitabu cha simu, aina tu ya

287
00:12:44,700 --> 00:12:45,640
akaenda na silika zao.

288
00:12:45,640 --> 00:12:49,220
Lakini hapa, ni wazi kuwa hili sock hapa, lakini kompyuta

289
00:12:49,220 --> 00:12:51,350
si itakuwa hivyo instinctive.

290
00:12:51,350 --> 00:12:53,830
kompyuta ataenda kuwa na ukusanyaji wa bits, kama sisi

291
00:12:53,830 --> 00:12:55,380
kujadiliwa kwenye Jumatano, na hao ni

292
00:12:55,380 --> 00:12:56,710
kupangwa kwa namna fulani katika kumbukumbu.

293
00:12:56,710 --> 00:13:00,400
Lakini uhakika ni kwamba kompyuta ina uwezo tu

294
00:13:00,400 --> 00:13:03,390
kuangalia mambo kwa wakati mmoja, na kwa kweli, hata sisi

295
00:13:03,390 --> 00:13:05,980
binadamu - hata ingawa anahisi kama mimi glanced chini na kupasuliwa

296
00:13:05,980 --> 00:13:08,900
pili baadaye najua ambapo sock ni, ubongo wangu na macho yangu

297
00:13:08,900 --> 00:13:12,000
labda alifanya haraka skim ya soksi hizo, na kisha latched

298
00:13:12,000 --> 00:13:13,400
kwenye moja katika swali.

299
00:13:13,400 --> 00:13:15,780
>> Hivyo kama sisi kuwa wote zaidi ya makusudi sasa kama kompyuta,

300
00:13:15,780 --> 00:13:17,780
jinsi gani mimi kupata hii jozi vinavyolingana?

301
00:13:17,780 --> 00:13:18,890
Naam, tunapaswa kuwa na iterate.

302
00:13:18,890 --> 00:13:21,440
Inabidi labda kitanzi juu ya hii fujo ya soksi juu ya

303
00:13:21,440 --> 00:13:25,760
sakafu ambapo mimi kusema kitu kama KWA KILA sock, pick it

304
00:13:25,760 --> 00:13:30,195
juu, na kama sura sawa na ukubwa kama moja nyingine, BASI

305
00:13:30,195 --> 00:13:32,150
dot, dot, dot, tutaweza kuendelea hadithi.

306
00:13:32,150 --> 00:13:34,430
Hivyo kwa kila sock, hivyo mimi kuchukua hii moja.

307
00:13:34,430 --> 00:13:36,520
Mimi ni kuangalia hii sawa na hii.

308
00:13:36,520 --> 00:13:38,250
Siyo, hivyo mimi kuweka kando kando.

309
00:13:38,250 --> 00:13:39,220
Kisha mimi iterate tena.

310
00:13:39,220 --> 00:13:40,340
Je, hii ni moja sawa?

311
00:13:40,340 --> 00:13:42,010
Hapana, si, hivyo mimi kuiweka kando.

312
00:13:42,010 --> 00:13:42,710
Je, hii ni moja?

313
00:13:42,710 --> 00:13:43,200
No

314
00:13:43,200 --> 00:13:43,670
Hii moja?

315
00:13:43,670 --> 00:13:44,520
Hapana, na kadhalika.

316
00:13:44,520 --> 00:13:48,730
Na kisha hatimaye, hopefully, mimi kukutana hii sock hapa.

317
00:13:48,730 --> 00:13:51,350
Hivyo kama ni umbo moja, kawaida, kuchukua hiyo.

318
00:13:51,350 --> 00:13:53,980
>> Na sasa, nini itakuwa hatua yetu ijayo hapa?

319
00:13:53,980 --> 00:13:54,402
Yeah?

320
00:13:54,402 --> 00:13:56,090
Watazamaji: Tambua haki kutoka kushoto.

321
00:13:56,090 --> 00:13:58,980
DAVID Malan: Okay, kutambua haki na wa kushoto, ili

322
00:13:58,980 --> 00:14:01,870
bahati nzuri, kwamba aina ya kazi.

323
00:14:01,870 --> 00:14:04,020
symmetriska kidogo, au nimekuwa tu huvaliwa yao kwa njia hiyo.

324
00:14:04,020 --> 00:14:07,020
Haki ya wote, hivyo nimekuwa kutambuliwa haki.

325
00:14:07,020 --> 00:14:09,980
Na sasa, kabla ya sisi kuendelea, basi mimi kumweka nje nini Yusufu

326
00:14:09,980 --> 00:14:12,890
wamekuwa wakifanya hapa kama aina ya programu mjuzi.

327
00:14:12,890 --> 00:14:15,800
Hivyo tena, hakuna njia moja ya kufanya hili, lakini zaidi tu

328
00:14:15,800 --> 00:14:18,480
idadi ya mistari, Joseph tayari imeshaanza kufanya hili

329
00:14:18,480 --> 00:14:19,460
aina ya indentation.

330
00:14:19,460 --> 00:14:21,950
Hakika, huu ni mkataba wa kawaida sana katika programu,

331
00:14:21,950 --> 00:14:26,110
ambapo wakati wa kufanya kitu iterative, looping style, kama

332
00:14:26,110 --> 00:14:28,480
sisi ni akimaanisha na maneno ya Kiingereza "KWA KILA

333
00:14:28,480 --> 00:14:31,090
sock, "mkataba katika pseudocode na, kama tutaona,

334
00:14:31,090 --> 00:14:33,410
kawaida programu lugha, ni tu Indent.

335
00:14:33,410 --> 00:14:36,240
Hit nafasi bar mara chache, hit muhimu Tab au kama,

336
00:14:36,240 --> 00:14:40,660
ili nested chini "KWA KILA sock" ni chunk ya

337
00:14:40,660 --> 00:14:43,430
stuff kwamba unahitaji kufanya kama matokeo ya kitanzi kwamba.

338
00:14:43,430 --> 00:14:45,940
Basi hiyo ni yote yale kuwasilisha semantically.

339
00:14:45,940 --> 00:14:48,620
Sasa wakati huo huo, "Kama ni sura sawa na ukubwa,"

340
00:14:48,620 --> 00:14:51,590
ukweli kwamba "Chukua" ni indented zaidi tu ina maana

341
00:14:51,590 --> 00:14:54,370
hilo ni jambo tu unapaswa kufanya kama sharti kwamba,

342
00:14:54,370 --> 00:14:59,770
kama kwamba tawi, kwamba uma katika barabara, kwa kweli ni kweli.

343
00:14:59,770 --> 00:15:02,130
>> Hivyo sasa hapa, sisi ni juu ya hatua nne, kutambua kulia na kushoto.

344
00:15:02,130 --> 00:15:03,410
Nimekuwa kutambuliwa haki.

345
00:15:03,410 --> 00:15:05,150
Kutoa yangu hatua tano.

346
00:15:05,150 --> 00:15:07,880
Na kitaalam, sisi inaweza kweli wito

347
00:15:07,880 --> 00:15:09,510
KWA KILA kitu -

348
00:15:09,510 --> 00:15:11,450
unapaswa pengine namba mistari yote ikiwa

349
00:15:11,450 --> 00:15:12,190
tunakwenda kufanya hili.

350
00:15:12,190 --> 00:15:14,006
JOSEPH: [inaudible]

351
00:15:14,006 --> 00:15:14,610
DAVID Malan: [inaudible]?

352
00:15:14,610 --> 00:15:16,070
Okay, faini, wote haki, tutaweza kufanya hivyo njia yako.

353
00:15:16,070 --> 00:15:19,590
Haki ya wote, hivyo hatua tano, ni jinsi gani sisi kufanya sock haki?

354
00:15:19,590 --> 00:15:22,310
Jinsi gani sisi kuendelea ijayo, hapa?

355
00:15:22,310 --> 00:15:22,730
Ndiyo?

356
00:15:22,730 --> 00:15:24,300
Watazamaji: Inueni mguu wa kulia.

357
00:15:24,300 --> 00:15:27,100
DAVID Malan: Inueni mguu wa kulia, Sawa.

358
00:15:27,100 --> 00:15:29,330
Hatua ya sita?

359
00:15:29,330 --> 00:15:30,728
Haraka.

360
00:15:30,728 --> 00:15:31,202
Yeah.

361
00:15:31,202 --> 00:15:33,100
Watazamaji: Find mwisho wazi ya sock.

362
00:15:33,100 --> 00:15:34,440
DAVID Malan: Okay, kupata mwisho wazi ya sock.

363
00:15:34,440 --> 00:15:34,840
Hivyo nzuri.

364
00:15:34,840 --> 00:15:37,180
Hivyo hapa, uaminifu, Instinct kawaida sana ingekuwa tu kuwa

365
00:15:37,180 --> 00:15:39,880
kuweka kwenye sock haki, lakini pia kwamba ni haki ya utata.

366
00:15:39,880 --> 00:15:42,750
Isipokuwa kompyuta au binadamu anayejua hasa nini maana ya,

367
00:15:42,750 --> 00:15:45,160
si kwenda kuwa na nitafanya hivyo, hivyo hapa, nimekuwa

368
00:15:45,160 --> 00:15:46,520
kupatikana ufunguzi wa hisa.

369
00:15:46,520 --> 00:15:48,222
Hatua ya saba?

370
00:15:48,222 --> 00:15:49,700
Watazamaji: Shika vidole vya miguu.

371
00:15:49,700 --> 00:15:51,070
DAVID Malan: Touch vidole.

372
00:15:51,070 --> 00:15:53,546
Sawa, hivyo sasa sisi kwenda -

373
00:15:53,546 --> 00:15:56,480
Haki wote, mimi naenda kuchukua uhuru baadhi hapa.

374
00:15:56,480 --> 00:15:57,110
Shukrani.

375
00:15:57,110 --> 00:15:59,210
Hatua ya nane?

376
00:15:59,210 --> 00:16:00,060
Vaeni sock.

377
00:16:00,060 --> 00:16:02,060
Sawa, hivyo sasa mimi, nadhani tuko karibu kutosha ya aina ya kuchukua

378
00:16:02,060 --> 00:16:03,480
hii moja nyumbani.

379
00:16:03,480 --> 00:16:05,980
Haki zote, hivyo hii huenda juu.

380
00:16:05,980 --> 00:16:07,950
Mimi itabidi kuchukua uhuru baadhi na inamaanisha nini, kwa kweli.

381
00:16:07,950 --> 00:16:08,920
Kuweka sock juu.

382
00:16:08,920 --> 00:16:10,853
Haki zote, sasa hatua tisa?

383
00:16:10,853 --> 00:16:11,740
Watazamaji: Weka mguu chini.

384
00:16:11,740 --> 00:16:12,510
DAVID Malan: Asante.

385
00:16:12,510 --> 00:16:15,610
Hatua ya tisa, kuweka mguu chini, na sasa, tunaweza kurudia.

386
00:16:15,610 --> 00:16:19,540
Hivyo labda, tunaweza sasa kwenda katika hatua ya 10 na kusema kutambua

387
00:16:19,540 --> 00:16:21,960
kushoto sock, lakini hiyo ni pengine tayari amefanya.

388
00:16:21,960 --> 00:16:24,100
>> Na hivyo basi, mimi unaweza aina ya kurudia hatua hizi.

389
00:16:24,100 --> 00:16:25,260
Lakini aina hii ya begs swali.

390
00:16:25,260 --> 00:16:28,100
Kabla ya hapo, wakati wa mwisho tulitaka kurudia kitu, sisi

391
00:16:28,100 --> 00:16:30,730
alifanya hivyo iteratively, tena na tena, KWA

392
00:16:30,730 --> 00:16:32,660
Kitanzi KILA hivyo kusema.

393
00:16:32,660 --> 00:16:36,420
Je, ni mantiki ya kutumia kitanzi ili kushughulikia wote

394
00:16:36,420 --> 00:16:38,470
kushoto na sock haki?

395
00:16:38,470 --> 00:16:40,460
Kwa sababu anahisi kama hizi shughuli ni pretty much

396
00:16:40,460 --> 00:16:43,090
kufanana isipokuwa kwa ukweli kwamba moja inaanza hapa na moja

397
00:16:43,090 --> 00:16:44,850
inaanza hapa?

398
00:16:44,850 --> 00:16:47,400
Je, sisi kitanzi, au kufanya sisi tu kuweka hatua kuandika

399
00:16:47,400 --> 00:16:48,745
10 na 11 na 12?

400
00:16:48,745 --> 00:16:50,540
Watazamaji: Loop.

401
00:16:50,540 --> 00:16:52,240
>> DAVID Malan: Sawa, hivyo kitanzi.

402
00:16:52,240 --> 00:16:54,730
Mimi kwa kweli anaweza kuwa alisema tu kuendelea.

403
00:16:54,730 --> 00:16:55,720
Hivyo kwa nini hii kesi?

404
00:16:55,720 --> 00:16:57,940
Naam, hii ni kweli kwanza ya zetu zisizo dhahiri

405
00:16:57,940 --> 00:17:01,210
kubuni maamuzi, na kwa kweli, moja ya metrics na ambayo

406
00:17:01,210 --> 00:17:03,990
tutaweza kuanza kutathmini, kwa wenyewe na kwa ajili yenu,

407
00:17:03,990 --> 00:17:06,780
ubora wa mpango ni jinsi tu pamoja iliyoundwa ni.

408
00:17:06,780 --> 00:17:09,619
Umefanya kiasi ndogo ya kazi muhimu

409
00:17:09,619 --> 00:17:12,480
kupata kazi kufanyika haraka zaidi, ama katika suala la

410
00:17:12,480 --> 00:17:15,430
muda wako au katika suala la muda wa kompyuta mbio?

411
00:17:15,430 --> 00:17:17,589
Wangapi shughuli gani inachukua nitafanya?

412
00:17:17,589 --> 00:17:20,180
Hivyo arguably, hii ni fursa kwa kitanzi kwa sababu

413
00:17:20,180 --> 00:17:22,829
haraka kama mimi kuanza kuiga na pasting, kama Joseph ufanisi

414
00:17:22,829 --> 00:17:25,010
ingekuwa kuanza kufanya katika dakika moja, wewe ni aina ya kupoteza yako

415
00:17:25,010 --> 00:17:27,140
muda, na wewe ni kuwa doubly expressive.

416
00:17:27,140 --> 00:17:30,260
>> Lakini wakati huo huo, hizi ni kweli tu mbili maalum

417
00:17:30,260 --> 00:17:31,890
kesi, kushoto na kulia.

418
00:17:31,890 --> 00:17:34,930
Na wakati kabla, nipate kuwa soksi 10 au 20 au zaidi katika

419
00:17:34,930 --> 00:17:37,960
rundo, ni dhahiri hufanya akili si kuwa na mistari 50 ya

420
00:17:37,960 --> 00:17:40,180
code akisema kuangalia hii sock, basi moja ijayo,

421
00:17:40,180 --> 00:17:41,300
basi moja ijayo.

422
00:17:41,300 --> 00:17:43,450
Hapa, ni kidogo chini ya dhahiri, na napenda mapendekezo

423
00:17:43,450 --> 00:17:44,390
kwamba tunaweza kwenda ama njia.

424
00:17:44,390 --> 00:17:46,720
Tunaweza kuwa na aidha kuwa kitanzi, ingawa tu matanzi

425
00:17:46,720 --> 00:17:50,620
mara mbili, au tunaweza tu nakala na kuweka kidogo tu

426
00:17:50,620 --> 00:17:53,270
hapa ili kupata kazi kufanyika.

427
00:17:53,270 --> 00:17:55,210
Lakini mpango huu ni Buggy, hivyo kusema.

428
00:17:55,210 --> 00:17:59,120
Inawezekana kuwa baadhi ya makosa, makosa, au kesi kona, hivyo kwa

429
00:17:59,120 --> 00:18:00,860
kusema, kwamba sisi si kweli wanatarajia.

430
00:18:00,860 --> 00:18:03,400
Hakuna kitu potoka wakati huu, lakini nini inaweza kuwa wamekwenda vibaya

431
00:18:03,400 --> 00:18:06,100
wakati wa utekelezaji mpango huu?

432
00:18:06,100 --> 00:18:07,040
Watazamaji: Huna soksi yoyote.

433
00:18:07,040 --> 00:18:08,980
>> DAVID Malan: Hivyo kunaweza kuwa hakuna soksi kuna chochote.

434
00:18:08,980 --> 00:18:10,380
Basi hebu fikiria kwamba kesi kona.

435
00:18:10,380 --> 00:18:14,670
Hivyo kama tunaweza kitabu nyuma hadi hatua moja, hivyo hatua moja alikuwa

436
00:18:14,670 --> 00:18:16,540
inama, ili hundi nje.

437
00:18:16,540 --> 00:18:21,250
Hatua mbili, pick up sock yako, lakini kisha kupata vinavyolingana sock,

438
00:18:21,250 --> 00:18:22,420
kutambua haki.

439
00:18:22,420 --> 00:18:25,050
Sisi aina ya kufanywa rundo zima la mawazo, na hii ni,

440
00:18:25,050 --> 00:18:27,720
kusema ukweli, kwa nini mpango wakati mwingine ajali.

441
00:18:27,720 --> 00:18:30,240
Kama wewe, programu, kuwa alifanya dhana fulani, kama

442
00:18:30,240 --> 00:18:33,000
Hakika kuna kwenda kuwa soksi au hakika kuna kinaendelea

443
00:18:33,000 --> 00:18:35,310
kuwa kumbukumbu kushoto katika kompyuta, hakika kuna kinaendelea

444
00:18:35,310 --> 00:18:37,420
kuwa nafasi disk kushoto juu ya gari ngumu -

445
00:18:37,420 --> 00:18:39,040
Naam, kama wewe kufanya mawazo haya, na kwamba si,

446
00:18:39,040 --> 00:18:41,880
katika ukweli, ukweli, ambaye anajua nini wakati mwingine ya kompyuta

447
00:18:41,880 --> 00:18:42,520
kwenda kufanya?

448
00:18:42,520 --> 00:18:44,450
Na wakati mwingine, wakati wewe kupata inazunguka beach mpira au

449
00:18:44,450 --> 00:18:47,750
waliohifadhiwa Windows au kama, hiyo ni just kwa sababu baadhi ya

450
00:18:47,750 --> 00:18:50,980
programu Hawakutarajia wale kesi kona kinachojulikana.

451
00:18:50,980 --> 00:18:53,050
Nini kingine inaweza kuwa wamekwenda vibaya katika mpango huu?

452
00:18:53,050 --> 00:18:53,330
Yeah?

453
00:18:53,330 --> 00:18:55,950
>> Watazamaji: Huna mguu wa kulia na mguu wa kushoto.

454
00:18:55,950 --> 00:18:58,920
DAVID Malan: Okay, wanaweza kuwa wote mguu wa kulia na

455
00:18:58,920 --> 00:19:01,940
kushoto mguu, na hivyo programu hii inaweza kuwa kwa wote

456
00:19:01,940 --> 00:19:02,590
husika.

457
00:19:02,590 --> 00:19:03,658
Wengine?

458
00:19:03,658 --> 00:19:05,650
Watazamaji: Unaweza kuwa ilichukua sock yatima.

459
00:19:05,650 --> 00:19:07,970
DAVID Malan: nipate ilichukua sock yatima, hivyo

460
00:19:07,970 --> 00:19:11,250
yasiyo ya vinavyolingana sock kwamba tu ana ndugu hakuna sababu nimekuwa

461
00:19:11,250 --> 00:19:13,650
waliopotea, ni vilio, ni katika safisha bado, au kama.

462
00:19:13,650 --> 00:19:15,550
Hivyo kwamba, pia, ina si kweli imekuwa kubebwa.

463
00:19:15,550 --> 00:19:15,790
Yeah?

464
00:19:15,790 --> 00:19:17,510
Watazamaji: Unaweza tayari soksi juu.

465
00:19:17,510 --> 00:19:19,050
DAVID Malan: nipate tayari soksi juu.

466
00:19:19,050 --> 00:19:20,080
Sikuweza kweli check.

467
00:19:20,080 --> 00:19:23,350
IF huna soksi juu, BASI kuendelea kufanya

468
00:19:23,350 --> 00:19:24,330
mstari mmoja na miwili.

469
00:19:24,330 --> 00:19:24,980
Na ambayo inaweza kutokea.

470
00:19:24,980 --> 00:19:26,880
Ukilala na soksi yako juu na kama, ili

471
00:19:26,880 --> 00:19:28,860
kwamba, pia, busara sana kona kesi.

472
00:19:28,860 --> 00:19:29,630
Na labda mtu mwingine?

473
00:19:29,630 --> 00:19:31,310
Watazamaji: sock ni ndani nje.

474
00:19:31,310 --> 00:19:34,000
DAVID Malan: Hivyo sock ni ndani nje, hivyo sisi hakufanya kosa

475
00:19:34,000 --> 00:19:35,330
kuangalia, katika muda mfupi.

476
00:19:35,330 --> 00:19:38,550
Sisi hawakuwa kuangalia kama hali ya dunia ni kama sisi kutarajia.

477
00:19:38,550 --> 00:19:41,310
Sisi hawakuwa kuangalia kama sisi kweli kupatikana nini sisi ni kuangalia kwa.

478
00:19:41,310 --> 00:19:43,310
>> Na hata ingawa hii ni aina ya mfano ridiculous

479
00:19:43,310 --> 00:19:46,110
kuwashirikisha soksi, mwisho wa siku, hii ni hasa

480
00:19:46,110 --> 00:19:48,740
aina ya mawazo unahitaji kuwa na wakati kuandika programu,

481
00:19:48,740 --> 00:19:51,740
hata katika Scratch kama vile katika C, katika JavaScript, katika PHP,

482
00:19:51,740 --> 00:19:53,920
kwa sababu vinginevyo, programu yako maonyesho

483
00:19:53,920 --> 00:19:56,980
sawa ya mpira ambao inazunguka pwani au tu mavuno

484
00:19:56,980 --> 00:19:58,210
usahihi wa matokeo.

485
00:19:58,210 --> 00:20:00,250
Hivyo wengi shukrani hapa kwa mwandishi wetu Joseph.

486
00:20:00,250 --> 00:20:05,060
[Applause]

487
00:20:05,060 --> 00:20:06,850
>> DAVID Malan: zote haki, hivyo ni nini, katika

488
00:20:06,850 --> 00:20:08,230
kweli, programu ya kompyuta?

489
00:20:08,230 --> 00:20:09,670
Naam, hebu kuchukua mtazamo wa haraka katika

490
00:20:09,670 --> 00:20:11,100
mwakilishi mmoja hapa.

491
00:20:11,100 --> 00:20:15,260
Hivyo hii ni programu iliyoandikwa katika lugha inayoitwa C. C ni

492
00:20:15,260 --> 00:20:17,830
uungwana zamani siku hizi, lakini wengi lugha ya karibu zaidi ni kujengwa

493
00:20:17,830 --> 00:20:18,460
juu yake.

494
00:20:18,460 --> 00:20:21,180
Hakika, PHP, moja ya lugha za mtandao-centric tutaweza

495
00:20:21,180 --> 00:20:24,050
kutumia kuelekea mwisho mrefu wa, yenyewe ina nini inaitwa

496
00:20:24,050 --> 00:20:27,550
mkalimani, programu iliyoandikwa katika C, lakini zaidi juu ya kwamba

497
00:20:27,550 --> 00:20:28,690
katika wiki nyingi kutoka sasa.

498
00:20:28,690 --> 00:20:30,840
Lakini mpango huu, na hii ni nini maana ya kuandika

499
00:20:30,840 --> 00:20:32,880
mpango, angalau moja rahisi sana.

500
00:20:32,880 --> 00:20:35,540
Tuna baadhi ya syntax uungwana cryptic hapa, lakini unaweza

501
00:20:35,540 --> 00:20:38,340
pengine guess, hata kama wewe sijawahi iliyowekwa mbele, nini

502
00:20:38,340 --> 00:20:39,750
mpango huu gani.

503
00:20:39,750 --> 00:20:43,640
Hakika, sijui nini ni printf, lakini magazeti ya shaka

504
00:20:43,640 --> 00:20:45,700
conjures up wazo la uchapishaji kitu nje.

505
00:20:45,700 --> 00:20:48,590
Na hivyo ndiyo, mpango huu ni hatimaye kwenda magazeti nje

506
00:20:48,590 --> 00:20:50,250
maneno "Hello, Dunia."

507
00:20:50,250 --> 00:20:53,390
>> Sasa, kama una Mac au PC au kompyuta Linux, tabia mbaya

508
00:20:53,390 --> 00:20:55,550
ni, angalau kama wewe kupakuliwa baadhi hiari

509
00:20:55,550 --> 00:20:58,000
inapatikana programu, unaweza wamekuwa kuandika mipango juu ya

510
00:20:58,000 --> 00:21:00,310
Laptop yako mwenyewe kwa muda kabisa sasa.

511
00:21:00,310 --> 00:21:03,040
Juu ya Mac OS, kwa mfano, kuna programu hii inaitwa

512
00:21:03,040 --> 00:21:05,340
Terminal kuja na Mac, hiyo ni kawaida katika yako

513
00:21:05,340 --> 00:21:07,550
Utilities folder, na kwa ujumla kuufungua nyeusi na

514
00:21:07,550 --> 00:21:09,820
nyeupe au dirisha nyeupe na nyeusi ambayo una

515
00:21:09,820 --> 00:21:11,410
kuchochea saa ambayo unaweza aina amri.

516
00:21:11,410 --> 00:21:13,060
Hivyo hii ni kweli ni kukumbusha kile kompyuta

517
00:21:13,060 --> 00:21:15,100
kutumika kwa kuwa kabla ya mtumiaji graphical

518
00:21:15,100 --> 00:21:16,710
interfaces, GUIs, alikuja pamoja.

519
00:21:16,710 --> 00:21:19,200
Sasa, katika Windows, una utaratibu sawa katika fomu

520
00:21:19,200 --> 00:21:20,130
wa haraka amri.

521
00:21:20,130 --> 00:21:23,430
>> Lakini kile Mimi naenda kufanya hapa ni kufungua, hebu sema,

522
00:21:23,430 --> 00:21:26,580
TextEdit tena, hivyo mpango huo sisi walikuwa wanatumia kwa ajili ya

523
00:21:26,580 --> 00:21:28,870
pseudocode wakati uliopita, na mimi nina kwenda mbele na

524
00:21:28,870 --> 00:21:30,080
kuandika mpango wangu wa kwanza.

525
00:21:30,080 --> 00:21:34,030
Pamoja stdio.h, chochote kwamba njia, int kuu

526
00:21:34,030 --> 00:21:36,880
batili, chochote kile maana yake, na kisha katika katikati hapa,

527
00:21:36,880 --> 00:21:40,560
printf ("hello, ulimwengu."). Na kisha karibu quote,

528
00:21:40,560 --> 00:21:42,340
karibu Paren, semicolon.

529
00:21:42,340 --> 00:21:44,460
Sasa mimi nina kwenda mbele na tu hit Command-S. Mimi naenda

530
00:21:44,460 --> 00:21:47,650
kwenda mbele na kuokoa hii kama hello.c, hivyo mkataba katika

531
00:21:47,650 --> 00:21:50,530
dunia ya programu C ni jina faili dot c.

532
00:21:50,530 --> 00:21:52,880
Mimi naenda kuweka tu katika Nyumbani saraka John Harvard wa,

533
00:21:52,880 --> 00:21:56,370
hapa, bonyeza Ila, na sasa mimi nina kwenda juu ya hii

534
00:21:56,370 --> 00:21:59,110
terminal dirisha, ambayo tena ni hii haraka nyeusi na nyeupe

535
00:21:59,110 --> 00:22:00,860
ambapo naweza wanatekeleza amri.

536
00:22:00,860 --> 00:22:04,550
>> Mimi wanaweza kukimbia mipango na kuandika jina lao, na si kwa

537
00:22:04,550 --> 00:22:06,710
mbili-Kwenye icons katika akili ya kawaida.

538
00:22:06,710 --> 00:22:10,590
Lakini jambo ni kuhusu C ni kwamba lugha kama C kwanza

539
00:22:10,590 --> 00:22:13,150
huja katika namna hii, kitu kinachoitwa chanzo code.

540
00:22:13,150 --> 00:22:15,400
Kitu ambacho inaonekana kidogo kama Kiingereza lakini ni

541
00:22:15,400 --> 00:22:17,980
dhahiri chini kama Kiingereza kuliko Yusufu pseudocode

542
00:22:17,980 --> 00:22:18,930
wakati iliyopita.

543
00:22:18,930 --> 00:22:20,560
Ni kidogo zaidi arcane.

544
00:22:20,560 --> 00:22:22,830
Inaonekana kufuata mwelekeo wa baadhi au sheria.

545
00:22:22,830 --> 00:22:25,300
ukweli kwamba nina braces curly, semicolons, quotes,

546
00:22:25,300 --> 00:22:28,240
angle braces, anahisi kama kompyuta kuja na hii

547
00:22:28,240 --> 00:22:29,250
aina ya lugha.

548
00:22:29,250 --> 00:22:32,010
Lakini kama mimi kwenda, sasa, kwa dirisha hili terminal, siwezi kukimbia

549
00:22:32,010 --> 00:22:35,250
amri ambayo inaenda kubadilisha kwamba chanzo code ni

550
00:22:35,250 --> 00:22:36,610
kitu kinachoitwa kitu code.

551
00:22:36,610 --> 00:22:39,690
Ambayo inaenda kubadilisha Kiingereza-kama syntax kwa zeros

552
00:22:39,690 --> 00:22:41,760
na ndio, kila moja ya zeros na ndio sisi

553
00:22:41,760 --> 00:22:42,820
aliyesema kuhusu Jumatano.

554
00:22:42,820 --> 00:22:44,810
Sasa, mimi nina kwenda kukimbia amri kuitwa Clang.

555
00:22:44,810 --> 00:22:47,750
Zaidi juu ya hili katika wiki ijayo, lakini ni mpango na

556
00:22:47,750 --> 00:22:52,330
ambayo naweza kubadilisha hello.c ndani ya rundo zima

557
00:22:52,330 --> 00:22:53,640
ya zeros na ndio.

558
00:22:53,640 --> 00:22:54,950
>> Sasa, nimekuwa kukimbia amri hii.

559
00:22:54,950 --> 00:22:57,940
Nimekuwa kukimbia Clang, na kisha nikasema kukimbia mwenyewe juu ya faili hii

560
00:22:57,940 --> 00:23:00,630
kuitwa hello.c, ambayo mimi umba wakati uliopita, na

561
00:23:00,630 --> 00:23:02,090
kitu inaonekana kutokea.

562
00:23:02,090 --> 00:23:05,550
Lakini, ikiwa mimi poked karibu nyumbani saraka yangu, napenda kuona

563
00:23:05,550 --> 00:23:09,620
kwamba hii stupidly aitwaye mpango a.out sasa lipo.

564
00:23:09,620 --> 00:23:12,250
Hii ni jina default kwa ajili ya mpango wakati wa kuandika katika

565
00:23:12,250 --> 00:23:15,140
C. Tunaweza override hii hatimaye, lakini a.out ni

566
00:23:15,140 --> 00:23:18,340
jina la mpango mimi tu kuongoka katika zeros na ndio.

567
00:23:18,340 --> 00:23:21,490
Na kwa kuwa sasa ni zeros na ndio, Mac yangu, katika kesi hii, au

568
00:23:21,490 --> 00:23:24,670
yako Windows PC, wanaweza kuelewa bits wale, wale

569
00:23:24,670 --> 00:23:25,410
zeros na ndio.

570
00:23:25,410 --> 00:23:29,130
Na hivyo wakati mimi hit Enter, naona "hello, ulimwengu!"

571
00:23:29,130 --> 00:23:31,270
>> Lakini ni Buggy kidogo.

572
00:23:31,270 --> 00:23:34,110
Sikuwa kabisa kusema "hello, ulimwengu: hewa: -! Jharvard." Hewa ni

573
00:23:34,110 --> 00:23:35,020
jina ya kompyuta yangu.

574
00:23:35,020 --> 00:23:37,730
Jharvard ni jina la akaunti, hivyo nini mimi wazi

575
00:23:37,730 --> 00:23:41,070
omit kutoka mpango?

576
00:23:41,070 --> 00:23:42,480
Baadhi ya aina ya mapumziko ya mstari.

577
00:23:42,480 --> 00:23:45,150
Sikuweza hit sawa ya Enter au kurudi carriage,

578
00:23:45,150 --> 00:23:47,760
na hii ni, tena, ushahidi wa ukweli kwamba kompyuta inaweza

579
00:23:47,760 --> 00:23:49,800
tu kufanya kile wewe kuwaambia cha kufanya.

580
00:23:49,800 --> 00:23:52,400
Na ukweli kwamba Mimi sikuwaambieni kompyuta hoja

581
00:23:52,400 --> 00:23:53,860
mshale line ijayo -

582
00:23:53,860 --> 00:23:55,200
vizuri, ni hakika si kwenda tu kufanya hivyo

583
00:23:55,200 --> 00:23:56,750
kujikinai kwa ajili yangu.

584
00:23:56,750 --> 00:24:00,860
Hivyo kama mimi kurejea mpango wangu, na mimi kusema \ n -

585
00:24:00,860 --> 00:24:03,180
Hivyo \ n, kama tutaweza kuona hivi karibuni, ni njia ya

586
00:24:03,180 --> 00:24:06,910
anayewakilisha mambo weird kama wahusika mpya line, mambo

587
00:24:06,910 --> 00:24:08,840
ambayo vinginevyo kuwa ni matokeo ya

588
00:24:08,840 --> 00:24:09,940
kupiga ufunguo kuingia.

589
00:24:09,940 --> 00:24:11,730
Lakini kwa sasa, tu kujua kwamba kitufe kuingia ingekuwa

590
00:24:11,730 --> 00:24:14,170
tu kufanya code yetu kuangalia isiyo ya kawaida, hivyo aliamua dunia, unajua

591
00:24:14,170 --> 00:24:16,580
nini, kwa kuweka mambo prettier, kuitunza kwenye mstari mmoja, hebu

592
00:24:16,580 --> 00:24:19,070
tu kusema \ n inawakilisha mstari mpya.

593
00:24:19,070 --> 00:24:22,260
Hebu resave faili yangu, kwenda nyuma ya dirisha terminal, na

594
00:24:22,260 --> 00:24:25,290
re-kukimbia a.out, Ingiza.

595
00:24:25,290 --> 00:24:28,374
Bado Buggy, lakini kwa nini?

596
00:24:28,374 --> 00:24:29,750
>> Watazamaji: [inaudible]

597
00:24:29,750 --> 00:24:31,540
DAVID Malan: Yeah, hivyo mimi haja ya recompile yake.

598
00:24:31,540 --> 00:24:34,610
Hivyo mpango wa kukusanya tu ina maana kubadili kutoka chanzo

599
00:24:34,610 --> 00:24:37,660
kanuni na kitu code code, chanzo zeros na ndio.

600
00:24:37,660 --> 00:24:40,830
Sasa, ukweli tu kwamba mimi hit Ila katika hili TextEdit hana

601
00:24:40,830 --> 00:24:43,450
kuzaa juu ya zeros hizo na zile kwa sababu mimi kwanza haja ya

602
00:24:43,450 --> 00:24:48,260
kuwaambia Clang hey, nimekuwa iliyopita wale mistari ya kificho,

603
00:24:48,260 --> 00:24:49,040
chanzo code.

604
00:24:49,040 --> 00:24:51,010
Unahitaji regenerate a.out.

605
00:24:51,010 --> 00:24:52,990
Hakuna inaonekana kuwa kilichotokea, lakini katika kompyuta,

606
00:24:52,990 --> 00:24:55,820
katika mstari amri, ili kuzungumza, wakati chochote kinachotokea,

607
00:24:55,820 --> 00:24:57,510
kwamba kwa kawaida maana yote ni sawa.

608
00:24:57,510 --> 00:24:59,040
Wakati kitu gani kutokea, ina maana

609
00:24:59,040 --> 00:25:00,420
wewe messed up, kwa ujumla.

610
00:25:00,420 --> 00:25:04,020
>> Basi hebu sasa kwenda a.out, na kwa kweli sasa, nina "hello,

611
00:25:04,020 --> 00:25:04,440
dunia ".

612
00:25:04,440 --> 00:25:05,990
Na sasa, nini kuhusu haya zeros na zipi?

613
00:25:05,990 --> 00:25:07,520
Ambapo, kwa kweli, ni wale?

614
00:25:07,520 --> 00:25:10,710
Naam, siwezi kweli tu aina ya poke karibu sana

615
00:25:10,710 --> 00:25:11,210
kwa ufanisi.

616
00:25:11,210 --> 00:25:12,650
Hebu kufungua TextEdit.

617
00:25:12,650 --> 00:25:14,060
Hapa ni a.out.

618
00:25:14,060 --> 00:25:17,390
Hebu kwenda mbele na kufungua hii, na hii ni nini inaonekana yangu

619
00:25:17,390 --> 00:25:19,080
mpango inaonekana kama.

620
00:25:19,080 --> 00:25:21,570
Hivyo nilipofungua, si hello.c, lakini a.out.

621
00:25:21,570 --> 00:25:23,960
Lakini hii ni kweli si kile mpango wangu kweli ni.

622
00:25:23,960 --> 00:25:26,450
Wazi, hii ni aina fulani ya wahusika alfabeti.

623
00:25:26,450 --> 00:25:28,670
Mimi naona hakuna zeros na ndio, lakini hii ni

624
00:25:28,670 --> 00:25:30,780
kwa sababu a.out ni mpango.

625
00:25:30,780 --> 00:25:33,540
Zeros na wale - lakini TextEdit, kama jina linavyosema, ni

626
00:25:33,540 --> 00:25:37,130
tu kama Notepad juu ya Windows, ni tu mhariri wa maandishi, hivyo ni

627
00:25:37,130 --> 00:25:39,730
kuwachanganya wote wa zeros hizo na zile kama

628
00:25:39,730 --> 00:25:41,870
ingawa walikuwa, nini?

629
00:25:41,870 --> 00:25:43,380
ASCII wahusika.

630
00:25:43,380 --> 00:25:45,020
>> Hivyo wanakumbuka juu ya Jumatano, sisi tu kuja na hii

631
00:25:45,020 --> 00:25:48,740
holela ramani ya namba, au bits, na barua ya

632
00:25:48,740 --> 00:25:51,690
alfabeti na alama punctuation na kama.

633
00:25:51,690 --> 00:25:54,920
Hivyo TextEdit, kwamba ni mhariri asilia ni misinterpreting

634
00:25:54,920 --> 00:25:57,270
wale mifumo ya zeros na wale ambao wanatakiwa kuwa

635
00:25:57,270 --> 00:25:59,990
uchapishaji maneno, kama "dunia hello,." Ni ya kuionyesha

636
00:25:59,990 --> 00:26:02,150
kama ASCII, na kwamba sababu inaonekana messy kidogo.

637
00:26:02,150 --> 00:26:04,910
Sasa, kuna baadhi ya vidokezo ya usahihi katika hapa.

638
00:26:04,910 --> 00:26:08,090
Taarifa kama mimi kuonyesha, kuna ladha ya kweli "hello,

639
00:26:08,090 --> 00:26:10,810
dunia, "hivyo mahali fulani katika mpango kwamba ni

640
00:26:10,810 --> 00:26:12,120
sentensi mimi aliandika.

641
00:26:12,120 --> 00:26:14,610
Lakini hebu kwenda mbele na kuona sasa na mpango tofauti.

642
00:26:14,610 --> 00:26:17,420
Hii si moja tutaweza kutumia mara nyingi, lakini pia kuja na

643
00:26:17,420 --> 00:26:19,970
Mac na itakuwa ndani ya appliance CS50.

644
00:26:19,970 --> 00:26:23,940
Hebu kwenda mbele na kufungua na programu inayoitwa XXD.

645
00:26:23,940 --> 00:26:26,530
>> Nyuma kwa siku, programu nyingi walikuwa aitwaye uungwana isiyoeleweka kirahisi,

646
00:26:26,530 --> 00:26:28,200
na hivyo hali hiyo itaendelea.

647
00:26:28,200 --> 00:26:31,160
Lakini-b maana mate nje ya mpango huu kama binary.

648
00:26:31,160 --> 00:26:32,330
Je, si kukimbia.

649
00:26:32,330 --> 00:26:35,770
Kuonyesha ni mimi kama zeros na ndio, na hii ni C

650
00:26:35,770 --> 00:26:37,190
mpango sisi tu aliandika.

651
00:26:37,190 --> 00:26:39,920
Sasa, mimi, kama binadamu hapa, mimi uaminifu hawana wazo nini

652
00:26:39,920 --> 00:26:42,230
haya mbalimbali mifumo ya zeros na ndio kuwakilisha.

653
00:26:42,230 --> 00:26:45,320
Nyuma kwa siku, mimi, pamoja na kadi yangu Punch au kama, ingekuwa

654
00:26:45,320 --> 00:26:48,080
kweli kuwa na kuangalia kile ruwaza hizi mbalimbali za

655
00:26:48,080 --> 00:26:51,560
01111000, kwa kweli kuwakilisha.

656
00:26:51,560 --> 00:26:54,390
Au mbaya zaidi, napenda haja ya kufanya au kufinywa uumbaji

657
00:26:54,390 --> 00:26:56,130
ya ruwaza hizi za zeros na ndio.

658
00:26:56,130 --> 00:27:00,410
Lakini kwa sasa, kuchukua imani kwamba CPU, Intel ndani, hivyo

659
00:27:00,410 --> 00:27:03,440
kusema, ndani ya yote ya kompyuta yetu siku hizi, anajua

660
00:27:03,440 --> 00:27:05,100
jinsi ya kutafsiri zeros haya na ndio.

661
00:27:05,100 --> 00:27:07,010
Na baadhi zeros na ndio maana magazeti.

662
00:27:07,010 --> 00:27:09,040
Baadhi zeros na ndio maana kucheza sound.

663
00:27:09,040 --> 00:27:13,630
Baadhi zeroes na ndio maana kuchukua user pembejeo kutoka keyboard.

664
00:27:13,630 --> 00:27:15,960
Kuna kila aina ya mifumo tofauti, lakini sisi nashiriki,

665
00:27:15,960 --> 00:27:19,680
kama binadamu, tu kwa ujumla haja ya kuwa na wasiwasi kuhusu programu katika

666
00:27:19,680 --> 00:27:21,270
ngazi hii ya juu ya haki.

667
00:27:21,270 --> 00:27:24,320
Na katika nyingine CS madarasa unaweza delve chini zaidi na kuangalia

668
00:27:24,320 --> 00:27:26,820
katika mambo kama zeros hizo na zile, au bado

669
00:27:26,820 --> 00:27:28,000
mambo mengine bado.

670
00:27:28,000 --> 00:27:29,210
>> Hivyo sasa hebu kubadilisha hii.

671
00:27:29,210 --> 00:27:32,550
Hebu hoja haraka sana mbali na C na hoja ya kitu

672
00:27:32,550 --> 00:27:36,390
kidogo zaidi ya faraja, zaidi kidogo ya kusisimua, kwa kuwa

673
00:27:36,390 --> 00:27:39,340
tunaweza kupata nyuma Animations yetu na sauti na kama kwamba

674
00:27:39,340 --> 00:27:40,940
wazi kuwa alitoroka sisi katika hii

675
00:27:40,940 --> 00:27:42,480
uungwana primitive interface.

676
00:27:42,480 --> 00:27:46,430
Hivyo mpango huu sawa katika C inaweza kuwakilishwa sasa katika hii

677
00:27:46,430 --> 00:27:50,060
programu lugha inayoitwa Scratch kama ifuatavyo.

678
00:27:50,060 --> 00:27:54,230
Hii ni sawa na mpango huu hujambo dunia imeandikwa katika

679
00:27:54,230 --> 00:27:57,370
kipande hii puzzle style lugha inayoitwa Scratch.

680
00:27:57,370 --> 00:28:00,600
Hivyo basi mimi kwenda mbele na kufungua mpango huu sana.

681
00:28:00,600 --> 00:28:01,850
Ni mara ya pili wakamwita Scratch.

682
00:28:01,850 --> 00:28:03,880
Ni hiari inapatikana, na hii ni kitu kimoja sisi

683
00:28:03,880 --> 00:28:05,120
kuanza leo tarehe.

684
00:28:05,120 --> 00:28:07,790
>> Hivyo hii hapa ni Scratch, na ni kuvunjwa juu katika chache

685
00:28:07,790 --> 00:28:09,700
tofauti vipande.

686
00:28:09,700 --> 00:28:12,690
Juu ya haki ya juu sana, tuna hatua kinachojulikana, na

687
00:28:12,690 --> 00:28:13,670
Hakika, hiyo ambapo cookies

688
00:28:13,670 --> 00:28:15,440
kutumbuiza kidogo tu iliyopita.

689
00:28:15,440 --> 00:28:19,660
Na juu ya hatua ambayo ni mambo kuitwa sprites wahusika, au

690
00:28:19,660 --> 00:28:21,030
vitu, au taasisi.

691
00:28:21,030 --> 00:28:23,320
Ni kweli haina jambo jinsi unafikiri wao, lakini wao

692
00:28:23,320 --> 00:28:26,740
ni programmable, movable vitu, na katika kesi hii, hii

693
00:28:26,740 --> 00:28:30,730
mpango kwamba mwanafunzi wetu aliandika ina michache ya Gingerbread

694
00:28:30,730 --> 00:28:32,990
cookies, wanandoa wa cookies mviringo, rundo zima la

695
00:28:32,990 --> 00:28:35,430
mioyo, rundo zima la miwani.

696
00:28:38,170 --> 00:28:42,420
Kwa sababu hii, yeye au yeye ni uwezo wa mpango wa kila wale

697
00:28:42,420 --> 00:28:44,720
mtu binafsi wahusika tofauti.

698
00:28:44,720 --> 00:28:46,480
>> Sasa, ni nini maana kwa mpango wahusika hawa?

699
00:28:46,480 --> 00:28:49,440
Vizuri, basi mimi kwenda mbele na bonyeza kuki hii kushoto

700
00:28:49,440 --> 00:28:51,830
na kitabu juu ya upande wa kushoto juu hapa.

701
00:28:51,830 --> 00:28:53,670
Katika kushoto juu ya screen yangu sasa ni

702
00:28:53,670 --> 00:28:55,280
kinachojulikana scripts eneo hilo.

703
00:28:55,280 --> 00:28:58,790
Hii ni aina ya slate tupu, awali, kwenye ambayo naweza

704
00:28:58,790 --> 00:29:01,540
Drag na kuacha vipande puzzle kwamba, kusema ukweli, kufanya

705
00:29:01,540 --> 00:29:03,020
hasa nini wanasema.

706
00:29:03,020 --> 00:29:05,820
Katika sana juu ya hii stack ya vipande puzzle ni neno

707
00:29:05,820 --> 00:29:09,340
Wakati Green Flag clicked, na kama hakuwa na taarifa kabla,

708
00:29:09,340 --> 00:29:12,300
njia Nilianza kwamba wimbo kuki alikuwa kubonyeza, literally,

709
00:29:12,300 --> 00:29:13,320
bendera ya kijani.

710
00:29:13,320 --> 00:29:16,590
Hivyo kwamba kipande puzzle juu kushoto kuna maana ya wakati

711
00:29:16,590 --> 00:29:19,780
binadamu Clicks bendera ya kijani, aliendelea kufanya

712
00:29:19,780 --> 00:29:21,110
mambo yafuatayo.

713
00:29:21,110 --> 00:29:23,330
>> Sasa, kwa nini wao kuki kuendelea kufanya?

714
00:29:23,330 --> 00:29:25,810
Mimi kwa kweli sijui jinsi ya kutafsiri hii bado, lakini

715
00:29:25,810 --> 00:29:29,220
kuki inatarajia Groove yake na sifuri, basi walisubiri

716
00:29:29,220 --> 00:29:31,740
tatu sekunde, basi ni iliyopita kundi lake kwa moja, basi ni

717
00:29:31,740 --> 00:29:33,590
walisubiri pili, basi ni iliyopita yake

718
00:29:33,590 --> 00:29:35,100
Groove nyuma moja.

719
00:29:35,100 --> 00:29:37,373
Na kisha hii kwa kweli inaonekana kama kidogo ya mdudu, hawapaswi

720
00:29:37,373 --> 00:29:39,440
kuwa na mabadiliko ya Groove yake tena na tena isipokuwa ni

721
00:29:39,440 --> 00:29:43,380
kuwa iliyopita mahali pengine, lakini hii mfululizo wa hatua ni nini

722
00:29:43,380 --> 00:29:46,800
kulazimisha tabia ya kuki fulani.

723
00:29:46,800 --> 00:29:49,180
Basi hebu kweli kitabu nyuma na si kuangalia kitu

724
00:29:49,180 --> 00:29:50,430
kabisa hivyo tata bado.

725
00:29:50,430 --> 00:29:52,260
Hebu kwenda mbele na kwenda Picha, New,

726
00:29:52,260 --> 00:29:53,560
na kupata slate safi.

727
00:29:53,560 --> 00:29:56,590
>> Hivyo sasa, mimi kweli kuwa tupu script eneo hilo, hatua tupu,

728
00:29:56,590 --> 00:29:59,380
na default wetu Scratch Sprite, na juu kushoto

729
00:29:59,380 --> 00:30:01,670
juu ya screen yangu mimi kuwa na godoro wa wote wa zao

730
00:30:01,670 --> 00:30:03,400
inapatikana puzzle vipande vipande.

731
00:30:03,400 --> 00:30:06,300
Na sisi si kwenda kwa njia ya karibu kwamba wengi wa mambo haya

732
00:30:06,300 --> 00:30:09,470
leo kwa sababu, tena, zaidi ni maelezo binafsi, lakini sisi

733
00:30:09,470 --> 00:30:12,370
kujaribu categorize yao na kumweka nje yanayofanana

734
00:30:12,370 --> 00:30:15,380
na lugha hizi baadaye ambayo sisi kupiga mbizi.

735
00:30:15,380 --> 00:30:19,180
Na juu kushoto hapa ni kwanza Wakati Green Flag clicked,

736
00:30:19,180 --> 00:30:22,170
hivyo basi mimi Drag hii zaidi ya hapa, zoom nje kidogo.

737
00:30:22,170 --> 00:30:25,780
Na kama mimi bonyeza bendera ya kijani, hakuna kitu kweli hutokea kwa sababu ya

738
00:30:25,780 --> 00:30:29,360
Mimi si masharti yoyote mantiki, taarifa yoyote ili kuzungumza, kwa

739
00:30:29,360 --> 00:30:31,040
kuwa bendera ya kijani, hivyo basi mimi kwenda

740
00:30:31,040 --> 00:30:32,500
makundi zaidi ya hapa.

741
00:30:32,500 --> 00:30:34,840
Mimi nina sasa katika jamii Control.

742
00:30:34,840 --> 00:30:37,630
Mimi badala kwenda chini kwa jamii Looks, na

743
00:30:37,630 --> 00:30:39,970
kuna rundo zima la mambo hapa kwamba kusema Sema,

744
00:30:39,970 --> 00:30:43,110
Fikiria, Mabadiliko ya Rangi, Switch Costume.

745
00:30:43,110 --> 00:30:44,860
>> Hivyo unaweza kufanya mambo silly na costumes na

746
00:30:44,860 --> 00:30:45,870
sauti na kama.

747
00:30:45,870 --> 00:30:49,970
Hebu kwenda mbele na kusema tu Sema, na sasa taarifa kama mimi Drag

748
00:30:49,970 --> 00:30:52,940
na kuacha hii kipande puzzle, ni kwenda wanataka latch

749
00:30:52,940 --> 00:30:55,010
katika sura sambamba.

750
00:30:55,010 --> 00:30:58,020
Hivyo wakati mimi kwenda mbele na basi kwenda ya panya yangu, wao lock

751
00:30:58,020 --> 00:31:01,770
pamoja, na sasa kama mimi kwenda juu hapa na bonyeza bendera ya kijani,

752
00:31:01,770 --> 00:31:05,910
paka haina ukweli kusema hello kwa sababu hiyo ni nini ndani

753
00:31:05,910 --> 00:31:06,980
ya hii sanduku nyeupe.

754
00:31:06,980 --> 00:31:08,900
Tutaweza haraka kuona kwamba hii sanduku nyeupe ni nini wito

755
00:31:08,900 --> 00:31:10,250
hoja, au parameter.

756
00:31:10,250 --> 00:31:12,560
Ni njia ya kubadilisha tabia ya, katika kesi hii,

757
00:31:12,560 --> 00:31:15,070
puzzle kipande, lakini kama nataka kusema hasa kile alisema

758
00:31:15,070 --> 00:31:18,610
kabla, kusema hello, dunia, sasa naweza kurudi nyuma zaidi ya hapa,

759
00:31:18,610 --> 00:31:21,990
bonyeza kucheza, na "hello, ulimwengu" ni nini alisema.

760
00:31:21,990 --> 00:31:24,340
>> Hivyo sisi ni literally programu sasa.

761
00:31:24,340 --> 00:31:27,540
Ni si kulazimisha kwamba wote wa mpango, lakini angalau

762
00:31:27,540 --> 00:31:30,140
ni kitu kidogo zaidi kuliko kulazimisha kwamba inaonekana, katika

763
00:31:30,140 --> 00:31:31,300
kwanza mtazamo, kama hii.

764
00:31:31,300 --> 00:31:34,190
Na tunaweza haraka sana kupata yote zaidi expressive

765
00:31:34,190 --> 00:31:36,600
kwa sababu katika Scratch, kama katika lugha nyingine, kuna aina

766
00:31:36,600 --> 00:31:40,010
aina ya kauli, si tu Sema au uchapishaji kitu, lakini

767
00:31:40,010 --> 00:31:42,650
unaweza kufanya mambo kama kusubiri, kama sisi tu, kwa kuona kwa

768
00:31:42,650 --> 00:31:44,240
cookie, baadhi ya idadi ya sekunde.

769
00:31:44,240 --> 00:31:46,440
Unaweza kucheza sauti katika mazingira ya Scratch tu

770
00:31:46,440 --> 00:31:49,050
kama unaweza katika kawaida programu ya kompyuta sauti kucheza.

771
00:31:49,050 --> 00:31:52,440
Unaweza kuangalia kile kinachojulikana misemo Boolean.

772
00:31:52,440 --> 00:31:55,630
Hivyo sasa, hebu kuanza kwa kuongeza toolkit yetu baadhi ya istilahi

773
00:31:55,630 --> 00:31:58,840
kwamba kweli inahusiana na mfano kwamba Yusufu na mimi

774
00:31:58,840 --> 00:32:00,080
hapa na soksi.

775
00:32:00,080 --> 00:32:03,040
Hivyo kauli tu kauli ya ukweli.

776
00:32:03,040 --> 00:32:04,160
Je hii.

777
00:32:04,160 --> 00:32:07,370
maelekezo kwa Sprite, au mimi binadamu, kufanya kitu fulani.

778
00:32:07,370 --> 00:32:10,420
Kujieleza Boolean ni kitu ambayo ina thamani,

779
00:32:10,420 --> 00:32:14,580
kinachojulikana ukweli thamani, hiyo ni aidha zero au moja, au ya uongo

780
00:32:14,580 --> 00:32:17,890
kweli, au kuizima, hakuna au ndiyo.

781
00:32:17,890 --> 00:32:19,730
Je, si kweli jambo jinsi unafikiri ya hili, lakini ni

782
00:32:19,730 --> 00:32:20,700
binary serikali.

783
00:32:20,700 --> 00:32:22,610
Kama Nate kujadiliwa katika video Jumatano, wawili

784
00:32:22,610 --> 00:32:23,570
mambo tofauti.

785
00:32:23,570 --> 00:32:25,740
>> Hivyo katika Scratch, misemo Boolean kutokea kwa kuangalia

786
00:32:25,740 --> 00:32:28,910
kama hizi vitu bluu hapa, na katika kesi hii, swali

787
00:32:28,910 --> 00:32:30,960
alama ina maana kwamba wewe ni kuuliza swali.

788
00:32:30,960 --> 00:32:34,250
Je paka, au Sprite, kugusa mouse pointer?

789
00:32:34,250 --> 00:32:36,580
Hivyo hii ni mfano mmoja tu wa block Scratch kwamba kinaendelea

790
00:32:36,580 --> 00:32:39,950
kuruhusu sisi kuangalia ndiyo au hapana, ni panya kugusa

791
00:32:39,950 --> 00:32:40,790
sprite kwenye screen?

792
00:32:40,790 --> 00:32:42,840
Na hii inaweza kuwa na manufaa kama kweli wanataka kufanya mambo

793
00:32:42,840 --> 00:32:43,820
na mouse yako.

794
00:32:43,820 --> 00:32:46,470
Mbali na maneno Boolean, tuna mambo

795
00:32:46,470 --> 00:32:49,110
kama ni kipanya chini, hivyo unaweza kugundua kwamba aina ya

796
00:32:49,110 --> 00:32:50,200
swali kama vizuri.

797
00:32:50,200 --> 00:32:52,590
Tunaweza kufanya hisabati kama kweli wanataka, na kuna

798
00:32:52,590 --> 00:32:55,170
kweli zaidi ya kulazimisha matumizi kwa ajili ya hii kuliko safi tu ya

799
00:32:55,170 --> 00:32:56,400
hesabu, kama tutaweza kuona.

800
00:32:56,400 --> 00:32:59,690
Pseudo randomness na kufanya mpango yako kuonekana kufikiri

801
00:32:59,690 --> 00:33:03,490
au tabia tofauti kulingana na baadhi ya maadili inaonekana random,

802
00:33:03,490 --> 00:33:06,610
na kisha sisi mambo kama maneno Boolean kama NA.

803
00:33:06,610 --> 00:33:08,830
Hivyo kama kweli wanataka kuangalia maadili mbili, tutaweza kuona katika

804
00:33:08,830 --> 00:33:11,110
Scratch kwamba tunaweza kweli mtihani kama hii ni

805
00:33:11,110 --> 00:33:13,190
kweli na hii ni kweli.

806
00:33:13,190 --> 00:33:15,300
Kwa mfano, katika kesi ya soksi yangu, mimi naweza wameweza katika

807
00:33:15,300 --> 00:33:19,045
sana mwisho aliuliza swali kama sock kushoto ni juu ya haki na sock

808
00:33:19,045 --> 00:33:20,610
ni juu, kuacha.

809
00:33:20,610 --> 00:33:22,710
Umemaliza kwa siku, hivyo kwamba itakuwa

810
00:33:22,710 --> 00:33:24,300
nafasi kwa ajili hiyo.

811
00:33:24,300 --> 00:33:27,740
>> Basi hebu kwenda mbele na kujaribu kipande baadhi ya hizi pamoja

812
00:33:27,740 --> 00:33:31,570
na kwenda katika michache mifano zaidi

813
00:33:31,570 --> 00:33:32,610
kulazimisha kuliko huu.

814
00:33:32,610 --> 00:33:35,770
Hivyo basi mimi kwenda mbele hapa na kufungua baadhi ya mifano

815
00:33:35,770 --> 00:33:38,350
kwamba daima kuwa katika tovuti ya shaka pia, na

816
00:33:38,350 --> 00:33:39,870
kufungua hello2.

817
00:33:39,870 --> 00:33:42,910
Hivyo katika hello2 hapa, tuna mpango kwamba anafanya chache

818
00:33:42,910 --> 00:33:46,290
mambo, lakini siyo kufanya hivyo vizuri kama sisi nguvu.

819
00:33:46,290 --> 00:33:48,900
Hivyo hapa anasema "hello, ulimwengu" kwa moja ya pili na kisha waits

820
00:33:48,900 --> 00:33:49,450
kwa ajili ya pili.

821
00:33:49,450 --> 00:33:51,720
Na kisha anafanya hivyo tena, na kisha anafanya hivyo tena.

822
00:33:51,720 --> 00:33:55,530
Hivyo kama mimi bonyeza bendera ya kijani, Scratch anasema "Hello, ulimwengu.

823
00:33:55,530 --> 00:33:57,160
Hello, ulimwengu.

824
00:33:57,160 --> 00:34:00,080
Hello, ulimwengu. "Na hii ni wazi mgombea sasa kwa

825
00:34:00,080 --> 00:34:00,860
kuboresha.

826
00:34:00,860 --> 00:34:03,070
>> Nini uboreshaji kidogo kidogo, hopefully, tunaweza

827
00:34:03,070 --> 00:34:07,610
sasa kufanya ikiwa Scratch inaunga mkono maana?

828
00:34:07,610 --> 00:34:08,310
Baadhi ya aina ya kitanzi.

829
00:34:08,310 --> 00:34:10,960
Baadhi ya aina ya marudio, sasa, itakuwa nzuri, hivyo basi mimi

830
00:34:10,960 --> 00:34:11,920
kweli kujaribu kuwa.

831
00:34:11,920 --> 00:34:13,870
Hebu kweli kwenda na hoja hii.

832
00:34:13,870 --> 00:34:16,449
Hivyo taarifa unaweza detach vitalu kwa urahisi kama unaweza kuongeza kwa

833
00:34:16,449 --> 00:34:17,420
ambatisha yao.

834
00:34:17,420 --> 00:34:20,730
Hebu kwenda chini ya Kudhibiti, kitabu chini hapa, na kwa kweli,

835
00:34:20,730 --> 00:34:24,000
kuna kipande hii puzzle hapa, Rudia na Forever na

836
00:34:24,000 --> 00:34:24,870
Kama Forever.

837
00:34:24,870 --> 00:34:28,500
Hivyo kuna idadi ya njia ya kuonyesha constructs looping

838
00:34:28,500 --> 00:34:29,340
katika Scratch.

839
00:34:29,340 --> 00:34:31,730
moja mimi pengine wanataka hapa ni si Forever sababu mimi tu

840
00:34:31,730 --> 00:34:34,639
wanataka hili kutokea mara tatu, lakini pengine Rudia.

841
00:34:34,639 --> 00:34:38,449
Hivyo basi mimi Drag Rudia zaidi ya hapa, Drag na tone yake, na

842
00:34:38,449 --> 00:34:42,530
sasa badala ya kusema "hello, dunia" mara tatu tofauti,

843
00:34:42,530 --> 00:34:44,230
basi mimi Drag hii kipande puzzle katika hapa.

844
00:34:44,230 --> 00:34:46,610
Na hata ingawa haionekani fit, mpango huo ni smart

845
00:34:46,610 --> 00:34:48,920
kutosha kutambua itakua kujaza, hivyo ni

846
00:34:48,920 --> 00:34:51,270
maumbo kwamba suala hilo na si kawaida kabisa.

847
00:34:51,270 --> 00:34:54,030
Hebu kubadili marudio kwa tatu, na sasa napenda kwenda

848
00:34:54,030 --> 00:34:56,560
mbele na Drag Subiri Moja Pili katika huko pia.

849
00:34:56,560 --> 00:34:59,220
Ni kwenda snap katika pia, na hivyo sasa mimi naenda Drag

850
00:34:59,220 --> 00:35:01,370
guys hawa zaidi ya hapa na tu kutupa kwa sababu mimi

851
00:35:01,370 --> 00:35:02,710
hawana haja nao tena.

852
00:35:02,710 --> 00:35:05,920
Hebu zoom nje na bonyeza bendera ya kijani sasa, na tuna

853
00:35:05,920 --> 00:35:09,600
mpango huo lakini, kama mimi alitabiri kabla, bora

854
00:35:09,600 --> 00:35:12,200
iliyoundwa kwa sababu unaweza kufikiria jinsi mbaya mpango huu

855
00:35:12,200 --> 00:35:14,410
bila kupata, hakika aesthetically, kama alikuwa na

856
00:35:14,410 --> 00:35:16,640
kuanza kuiga na pasting, kuiga na pasting, au

857
00:35:16,640 --> 00:35:20,020
dragging na kuacha mambo yale yale, darn tena na tena.

858
00:35:20,020 --> 00:35:22,260
>> Sasa, mambo ya kusema tu kwenye screen, uchapishaji kwa

859
00:35:22,260 --> 00:35:25,350
screen, kwa kweli wote si kwamba kusisimua, hivyo hebu kufungua

860
00:35:25,350 --> 00:35:26,580
tatu ugomvi hapa.

861
00:35:26,580 --> 00:35:29,810
Na sasa, kama utaona, hii itabidi haraka kupata annoying -

862
00:35:29,810 --> 00:35:30,850
[Meow]

863
00:35:30,850 --> 00:35:31,940
DAVID Malan: - lakini pia ni aina ya cute.

864
00:35:31,940 --> 00:35:35,244
[Meow]

865
00:35:35,244 --> 00:35:37,460
DAVID Malan: Sawa, hivyo bora, na sisi tunaweza kutumia

866
00:35:37,460 --> 00:35:41,060
sawa mpito ya chunking hii juu katika looping

867
00:35:41,060 --> 00:35:43,520
muundo, lakini hebu kufanya hivyo kuvutia zaidi bado.

868
00:35:43,520 --> 00:35:47,480
>> Hebu kwenda mbele na kufungua ugomvi wa nne hapa, ambapo mimi

869
00:35:47,480 --> 00:35:50,020
kuchukua mambo hatua moja zaidi.

870
00:35:50,020 --> 00:35:54,450
Hivyo kulingana na hii, silly ingawa hii ni mara ya kwanza

871
00:35:54,450 --> 00:35:58,530
mtazamo, ni nini mpango huu kwenda kufanya?

872
00:35:58,530 --> 00:35:59,790
Ni kwenda meow mara moja.

873
00:35:59,790 --> 00:36:00,160
Kwa nini?

874
00:36:00,160 --> 00:36:03,340
Naam, ni moja, mbali kama mimi najua, daima chini ya miwili.

875
00:36:03,340 --> 00:36:04,890
Hakuna dhana ya randomness hapa.

876
00:36:04,890 --> 00:36:07,240
Nina literally ngumu-coded moja na mbili, lakini hii ni

877
00:36:07,240 --> 00:36:10,370
mfano sasa ya kweli kwa kutumia usemi Boolean.

878
00:36:10,370 --> 00:36:13,650
Kiasi kama kama Yusufu alivyofanya katika pseudocode wake, indentation IF

879
00:36:13,650 --> 00:36:17,170
kupata vinavyolingana soksi THEN kufanya yafuatayo, hapa tuna

880
00:36:17,170 --> 00:36:19,750
kujieleza KAMA moja ni chini ya miwili BASI -

881
00:36:19,750 --> 00:36:21,820
na kwa kweli sisi hata kidogo ya indentation,

882
00:36:21,820 --> 00:36:24,480
ambapo zambarau ni kidogo indented kwa haki -

883
00:36:24,480 --> 00:36:26,600
BASI utaenda kucheza meow sound.

884
00:36:26,600 --> 00:36:30,060
Sasa, katika kesi hii, kuwa mtu ni daima chini ya miwili, hivyo hii

885
00:36:30,060 --> 00:36:31,970
ni aina ya taka ya hali hiyo.

886
00:36:31,970 --> 00:36:34,890
Lakini tutaweza kuwa na uwezo, kama tutaweza kuona, kuziba mambo mengine ndani ya

887
00:36:34,890 --> 00:36:37,420
haya placeholders ambapo moja na mbili sasa ni.

888
00:36:37,420 --> 00:36:41,340
Basi hebu sasa mapema ili mfano tano ya hizi kadhaa

889
00:36:41,340 --> 00:36:45,850
hellos na kuangalia nini mpango huu kinaendelea kufanya.

890
00:36:45,850 --> 00:36:48,710
>> Hivyo sasa, katika sentensi ya Kiingereza, jinsi gani hii

891
00:36:48,710 --> 00:36:51,460
mpango kuishi?

892
00:36:51,460 --> 00:36:52,950
Watazamaji: Meows nusu wakati.

893
00:36:52,950 --> 00:36:55,380
DAVID Malan: nusu Meow ya muda, hivyo hii ni njia ya

894
00:36:55,380 --> 00:36:56,700
kuwasilisha wazo rahisi sana.

895
00:36:56,700 --> 00:36:59,400
Hata ingawa sisi kutokea kwa kutumia usawa baadhi hapa

896
00:36:59,400 --> 00:37:01,860
katika idadi fulani, hii ni kweli tu programmatical

897
00:37:01,860 --> 00:37:09,490
njia, njia sahihi, ya kusema kama sarafu anakuja juu ya vichwa, kwenda

898
00:37:09,490 --> 00:37:10,270
mbele na meow.

899
00:37:10,270 --> 00:37:13,540
Au kinyume chake, kama sarafu anakuja juu mikia, wala meow.

900
00:37:13,540 --> 00:37:15,110
Na katika kesi hii, ni jinsi gani sisi kueleza kwamba?

901
00:37:15,110 --> 00:37:17,950
Tutaweza kuchukua idadi random 1-10, na kama kwamba

902
00:37:17,950 --> 00:37:21,110
idadi ni chini ya 6, kwenda mbele na meow.

903
00:37:21,110 --> 00:37:22,260
Na jinsi gani hii kupata katika hapa?

904
00:37:22,260 --> 00:37:24,620
Naam tena, taarifa tu dragging na kuacha na

905
00:37:24,620 --> 00:37:26,190
mambo latches katika nafasi.

906
00:37:26,190 --> 00:37:28,020
>> Hivyo sasa hebu angalia kama randomness hii kazi.

907
00:37:28,020 --> 00:37:29,845
Hebu kwenda mbele na bonyeza bendera ya kijani.

908
00:37:29,845 --> 00:37:31,120
[Meow]

909
00:37:31,120 --> 00:37:32,000
DAVID Malan: Okay.

910
00:37:32,000 --> 00:37:33,430
[Meow]

911
00:37:33,430 --> 00:37:35,260
DAVID Malan: Okay.

912
00:37:35,260 --> 00:37:38,510
Okay, nzuri, hivyo sisi got vichwa vichwa, mikia ufanisi.

913
00:37:38,510 --> 00:37:39,295
Mikia.

914
00:37:39,295 --> 00:37:39,590
[Meow]

915
00:37:39,590 --> 00:37:41,829
DAVID Malan: Wakuu.

916
00:37:41,829 --> 00:37:43,220
[Meow]

917
00:37:43,220 --> 00:37:44,040
DAVID Malan: Mufti.

918
00:37:44,040 --> 00:37:46,220
Ni daima Awkward wakati tu kitakwimu kupata mbaya

919
00:37:46,220 --> 00:37:48,510
kukimbia, na ni wote vichwa, na mpango wa kweli haina

920
00:37:48,510 --> 00:37:49,230
kazi kama wewe d matumaini.

921
00:37:49,230 --> 00:37:51,210
Lakini wakati huu, ni kazi, na sisi wanaonekana kuwa, kama tulivyofanya

922
00:37:51,210 --> 00:37:53,830
hii idadi ya usio wa nyakati, 50% ya tabia mbaya.

923
00:37:53,830 --> 00:37:56,950
Sasa tena, si wote kwamba kuvutia, maamuzi tu paka

924
00:37:56,950 --> 00:37:59,840
meow, hivyo hebu angalia kama hatuwezi kuendeleza hii kidogo zaidi

925
00:37:59,840 --> 00:38:01,820
hapa katika toleo sita.

926
00:38:01,820 --> 00:38:05,620
Hivyo sasa, tuna kweli annoying version -

927
00:38:05,620 --> 00:38:08,215
[Meows SEKUNDE KILA FEW]

928
00:38:08,215 --> 00:38:10,640
DAVID Malan: - na hii ni nini inayojulikana, kwa ujumla, kama

929
00:38:10,640 --> 00:38:11,670
usio kitanzi.

930
00:38:11,670 --> 00:38:14,190
>> Hivyo usio kitanzi katika kesi hii anahisi mbaya.

931
00:38:14,190 --> 00:38:16,970
Ni dhahiri kwenda kuanza sounding mbaya, na bado usio

932
00:38:16,970 --> 00:38:18,740
matanzi si daima mbaya.

933
00:38:18,740 --> 00:38:20,910
Je, unaweza kufikiria mazingira katika mipango ya kompyuta ambapo d

934
00:38:20,910 --> 00:38:22,910
kweli unataka kitanzi usio?

935
00:38:22,910 --> 00:38:23,691
Yeah?

936
00:38:23,691 --> 00:38:26,520
Watazamaji: Wakati unataka kuangalia hali.

937
00:38:26,520 --> 00:38:28,240
DAVID Malan: Okay, wakati unataka kuendelea kuangalia hali zao?

938
00:38:28,240 --> 00:38:29,190
Kama nini?

939
00:38:29,190 --> 00:38:30,440
Watazamaji: [inaudible]

940
00:38:36,060 --> 00:38:38,170
DAVID Malan: Okay, nzuri, hivyo kama wewe alikuwa na baadhi ya mpango, baadhi

941
00:38:38,170 --> 00:38:40,440
aina ya kitu nyumbani automatisering, ambapo unataka daima

942
00:38:40,440 --> 00:38:41,980
kufuatilia ni kesi kitu.

943
00:38:41,980 --> 00:38:42,850
Ni taa ya juu?

944
00:38:42,850 --> 00:38:45,020
Ni taa ya juu kwa sababu labda una timer, na

945
00:38:45,020 --> 00:38:47,360
wewe unataka waende mbali, unaweza haja ya kufanya kitu

946
00:38:47,360 --> 00:38:48,290
tena na tena.

947
00:38:48,290 --> 00:38:50,540
Na kwa kweli, akizungumza ya timers, yoyote ya ninyi ambao

948
00:38:50,540 --> 00:38:53,100
Clocks kwenye kompyuta yako au kuona digital, hiyo ni

949
00:38:53,100 --> 00:38:54,210
usio kitanzi.

950
00:38:54,210 --> 00:38:56,980
Ni inaendelea update mara kwa sababu ni daima

951
00:38:56,980 --> 00:38:59,750
kuangalia na kuangalia na kuangalia ana muda iliyopita,

952
00:38:59,750 --> 00:39:01,000
na kama ni hivyo, oh, mungu wangu.

953
00:39:03,670 --> 00:39:04,740
saa s hatimaye iliyopita.

954
00:39:04,740 --> 00:39:07,020
Inahitaji kuonyesha kwamba thamani na wewe.

955
00:39:07,020 --> 00:39:10,880
Hivyo ambapo zaidi ya matanzi wakati usio ni kosa,

956
00:39:10,880 --> 00:39:13,950
au angalau uamuzi maskini kubuni, wakati mwingine kufanya

957
00:39:13,950 --> 00:39:14,785
kuwa na thamani yao.

958
00:39:14,785 --> 00:39:18,170
>> Naam, hebu mapema zaidi hapa hello7.

959
00:39:18,170 --> 00:39:20,410
Hivyo sasa mpango kupata kidogo zaidi maingiliano.

960
00:39:20,410 --> 00:39:23,120
Hebu zoom katika hapa, na tena, hii ni nini ni nzuri

961
00:39:23,120 --> 00:39:23,640
kuhusu Scratch.

962
00:39:23,640 --> 00:39:26,760
Na tutaweza kuitumia kuwa wazi, Scratch, tu leo ​​na ndani ya

963
00:39:26,760 --> 00:39:27,780
tatizo wiki ijayo kuweka.

964
00:39:27,780 --> 00:39:31,920
Lakini siku ya Jumatatu, sisi kupiga mbizi katika C. Katika programu hii hapa, ni gani,

965
00:39:31,920 --> 00:39:33,190
milele, yafuatayo.

966
00:39:33,190 --> 00:39:35,890
IF kugusa mouse pointer - sasa, ambaye ni

967
00:39:35,890 --> 00:39:36,420
muktadha hapa?

968
00:39:36,420 --> 00:39:39,670
Naam, na taarifa kwamba nani kuchaguliwa chini hapa chini

969
00:39:39,670 --> 00:39:43,060
kulia ni paka, Sprite moja, hivyo scripts haya, hii

970
00:39:43,060 --> 00:39:45,720
mpango, inatumika kwake hasa.

971
00:39:45,720 --> 00:39:48,950
Hivyo kama paka kwamba ni kugusa mouse pointer, kisha itakuja

972
00:39:48,950 --> 00:39:51,350
kucheza hii chini na kusubiri sekunde mbili, na

973
00:39:51,350 --> 00:39:53,030
kisha kurudia ad nauseum.

974
00:39:53,030 --> 00:39:55,360
>> Basi hebu kwenda mbele na hit kucheza.

975
00:39:55,360 --> 00:39:57,580
Hakuna kinachotokea, lakini kama nataka pet

976
00:39:57,580 --> 00:39:59,310
paka sasa, naweza tu.

977
00:39:59,310 --> 00:40:01,130
[Meow]

978
00:40:01,130 --> 00:40:02,244
DAVID Malan: adorable.

979
00:40:02,244 --> 00:40:05,956
[Meow]

980
00:40:05,956 --> 00:40:08,750
DAVID Malan: Okay, chini ya annoying, lakini pia anapata mwanga mdogo,

981
00:40:08,750 --> 00:40:11,480
hivyo hebu hoja juu na kuona kama hatuwezi kuingiza

982
00:40:11,480 --> 00:40:12,460
zaidi kidogo mantiki.

983
00:40:12,460 --> 00:40:14,300
Hiyo ilikuwa mfano saba.

984
00:40:14,300 --> 00:40:16,090
>> Hapa katika mfano nane, tunakwenda

985
00:40:16,090 --> 00:40:18,670
kuanzisha hali mwingine.

986
00:40:18,670 --> 00:40:21,440
Sana kama uma halisi katika barabara, ambayo unaweza kwenda

987
00:40:21,440 --> 00:40:24,260
kushoto au unaweza kwenda kulia, hali katika programu

988
00:40:24,260 --> 00:40:28,120
Lugha kama Scratch, au kama tutaweza kuona C, anaweza kukuruhusu

989
00:40:28,120 --> 00:40:32,230
kwenda katika mwelekeo mmoja au mwingine kupitia IF mwingine kujenga.

990
00:40:32,230 --> 00:40:35,160
Hivyo halisi kabisa, KAMA kugusa mouse pointer, hii

991
00:40:35,160 --> 00:40:38,680
kucheza baadhi ya sauti, mwingine ni kwenda kucheza hii nyingine

992
00:40:38,680 --> 00:40:39,800
sauti, meow.

993
00:40:39,800 --> 00:40:42,510
Sasa, kama unaweza infer kutoka jina wa sauti hizi, unaweza

994
00:40:42,510 --> 00:40:45,310
pengine nadhani nini mpango huu s maana ya conjure up

995
00:40:45,310 --> 00:40:46,250
wazo la.

996
00:40:46,250 --> 00:40:48,742
Paka hii meowing happily.

997
00:40:48,742 --> 00:40:49,230
[Meow]

998
00:40:49,230 --> 00:40:51,410
DAVID Malan: Furaha, lakini haina

999
00:40:51,410 --> 00:40:52,926
kabisa kama kuguswa.

1000
00:40:52,926 --> 00:40:54,550
[Mngurumo]

1001
00:40:54,550 --> 00:40:57,500
DAVID Malan: Basi sasa tuna paka ambao yell saa wewe.

1002
00:40:57,500 --> 00:41:00,570
>> Haki zote, vizuri, siku moja mfano na paka hapa, na

1003
00:41:00,570 --> 00:41:02,920
hebu wazi toleo tisa ya hii hapa.

1004
00:41:02,920 --> 00:41:06,190
Hivyo sasa, tuna ijayo annoying wengi sauti kwamba mimi naweza

1005
00:41:06,190 --> 00:41:11,630
kupata, hivyo tuna walrus au simba bahari hapa nani kwenda kwa

1006
00:41:11,630 --> 00:41:13,222
kufanya yafuatayo.

1007
00:41:13,222 --> 00:41:20,870
[SEAL gome]

1008
00:41:20,870 --> 00:41:23,310
DAVID Malan: Okay, hivyo hii yataendelea hadi wewe kufikiri jinsi

1009
00:41:23,310 --> 00:41:24,640
mpango huu unavyofanya kazi.

1010
00:41:24,640 --> 00:41:28,560
Hivyo wakati huu, mnyama huyu ana scripts mbili, na nini

1011
00:41:28,560 --> 00:41:31,050
kuvutia hapa ni kwamba hawa scripts ni kwenda kutekeleza

1012
00:41:31,050 --> 00:41:32,260
sambamba.

1013
00:41:32,260 --> 00:41:35,340
Basi, kwa sababu wao wote kuanza na bendera moja ya kijani clicked,

1014
00:41:35,340 --> 00:41:38,080
ni kama kwenda kama hii, na mipango yote ya kuanza mbio

1015
00:41:38,080 --> 00:41:41,370
mara moja hata kama uko looping milele.

1016
00:41:41,370 --> 00:41:44,420
Hivyo katika script ya juu, mimi na baadhi ya mantiki.

1017
00:41:44,420 --> 00:41:49,275
Nini makala gani kwamba kutoa huko juu?

1018
00:41:49,275 --> 00:41:50,740
[SEAL gome]

1019
00:41:50,740 --> 00:41:51,670
Watazamaji: [inaudible]

1020
00:41:51,670 --> 00:41:53,295
DAVID Malan: Kama ni nini?

1021
00:41:53,295 --> 00:41:53,760
[SEAL gome]

1022
00:41:53,760 --> 00:41:55,852
Watazamaji: Kama umebakia kimya na sifuri, ni kwenda kuendelea kucheza

1023
00:41:55,852 --> 00:41:58,410
mgambo. [SEAL gome]

1024
00:41:58,410 --> 00:41:58,940
DAVID Malan: Okay, nzuri.

1025
00:41:58,940 --> 00:42:01,960
Hivyo KAMA kimya, chochote hii ni, jambo hili chungwa ni sifuri,

1026
00:42:01,960 --> 00:42:05,370
BASI kucheza simba bahari ya sauti na kufikiri "Oh,

1027
00:42:05,370 --> 00:42:06,770
hi, "kwa ajili ya mbili sekunde.

1028
00:42:06,770 --> 00:42:09,380
Sasa, sijui nini ni umebakia kimya, lakini sifuri conjures up

1029
00:42:09,380 --> 00:42:11,230
wazo la uongo au mbali.

1030
00:42:11,230 --> 00:42:14,490
Hivyo kama ni uongo kimya, hivyo kama si kimya,

1031
00:42:14,490 --> 00:42:15,660
kuendelea kucheza sound.

1032
00:42:15,660 --> 00:42:17,350
Haki zote, vizuri, jinsi gani sisi Disable jambo hili?

1033
00:42:17,350 --> 00:42:19,310
>> Naam, hebu tuangalie script pili chini huko.

1034
00:42:19,310 --> 00:42:22,130
script pili anasema kuweka umebakia kimya kwa sifuri.

1035
00:42:22,130 --> 00:42:25,180
Angalia pia ni machungwa, ili kile Scratch haina ni rangi

1036
00:42:25,180 --> 00:42:27,400
vitalu katika kivuli huo ikiwa ni aina

1037
00:42:27,400 --> 00:42:28,850
ya kimantiki kuhusiana.

1038
00:42:28,850 --> 00:42:32,850
Hivyo tu kama umebakia kimya juu juu mara ya machungwa, hivyo ni umebakia kimya chini hapa

1039
00:42:32,850 --> 00:42:34,060
zilizotajwa katika block machungwa.

1040
00:42:34,060 --> 00:42:36,170
Lakini hii ni kazi variable, hivyo kama ilivyo katika

1041
00:42:36,170 --> 00:42:39,170
algebra, una x na y na z, katika programu una

1042
00:42:39,170 --> 00:42:41,440
vigezo, lakini wao ni ujumla -

1043
00:42:41,440 --> 00:42:42,580
pause wacha kwa muda na takwimu jinsi

1044
00:42:42,580 --> 00:42:44,280
kuacha hii barking.

1045
00:42:44,280 --> 00:42:45,480
Je, mimi kufanya hili?

1046
00:42:45,480 --> 00:42:46,480
[SEAL gome]

1047
00:42:46,480 --> 00:42:47,920
DAVID Malan: Okay.

1048
00:42:47,920 --> 00:42:49,490
Ni kusimamishwa. Sawa.

1049
00:42:49,490 --> 00:42:52,230
>> Hivyo tu kama katika algebra una vigezo x, y, na z, lakini katika

1050
00:42:52,230 --> 00:42:55,260
programu, baada ya vigezo kama x, y, na z ujumla ni

1051
00:42:55,260 --> 00:42:57,330
kipaji juu kwa sababu wao siyo wakati wote expressive.

1052
00:42:57,330 --> 00:43:00,070
Hawana maana semantic wowote, hivyo katika zaidi

1053
00:43:00,070 --> 00:43:02,110
programu lugha, unaweza kuwa na vigezo kamili

1054
00:43:02,110 --> 00:43:05,270
fledged majina au maneno au misemo, kama kimya, kusema

1055
00:43:05,270 --> 00:43:06,030
wayatendayo.

1056
00:43:06,030 --> 00:43:09,380
Hivyo hii script pili pia alikuwa akisikiliza milele, na alisema

1057
00:43:09,380 --> 00:43:12,100
ikiwa muhimu, muhimu keyboard Space, ni

1058
00:43:12,100 --> 00:43:13,370
taabu, swali alama.

1059
00:43:13,370 --> 00:43:16,300
Hivyo kuna hali na kujieleza Boolean kwamba

1060
00:43:16,300 --> 00:43:19,010
kwenda kujibu swali ama ukweli au uongo,

1061
00:43:19,010 --> 00:43:22,880
basi nina ndani yake IF ufunguo nafasi ni taabu na

1062
00:43:22,880 --> 00:43:28,020
IF umebakia kimya ni sifuri, kuweka umebakia kimya kwa moja, mwingine kuweka umebakia kimya kwa sifuri.

1063
00:43:28,020 --> 00:43:30,510
Hivyo hii uma nyingine katika barabara, na taarifa jinsi nimekuwa

1064
00:43:30,510 --> 00:43:33,500
Furushi mbili KAMA hali, ni njia ya kuangalia ni

1065
00:43:33,500 --> 00:43:36,610
Nafasi Bar taabu kwa sababu kama ni hivyo, mimi ama unataka kwenda huu

1066
00:43:36,610 --> 00:43:38,000
njia au namna hiyo.

1067
00:43:38,000 --> 00:43:40,210
Na jinsi gani mimi Geuza thamani ya kimya?

1068
00:43:40,210 --> 00:43:41,410
Mimi na kuangalia ni sifuri?

1069
00:43:41,410 --> 00:43:45,890
Kama ni hivyo, kufanya hivyo ni moja, mwingine kufanya ni sifuri kwa hiyo kugeuza

1070
00:43:45,890 --> 00:43:47,670
wake na mataifa mawili.

1071
00:43:47,670 --> 00:43:50,030
>> Haki wote, hivyo basi tuna baadhi ya hizi muhimu

1072
00:43:50,030 --> 00:43:50,540
constructs.

1073
00:43:50,540 --> 00:43:52,810
Tuna maneno Boolean, na kutambua, pia, hizi ni

1074
00:43:52,810 --> 00:43:54,050
si yote unfamiliar.

1075
00:43:54,050 --> 00:43:56,730
Kwa kweli, hapa screenshot ya haraka ya Harvard kozi ya CS50

1076
00:43:56,730 --> 00:43:59,740
ununuzi chombo, na tovuti yoyote huko nje kwamba ina checkboxes

1077
00:43:59,740 --> 00:44:02,420
na kushuka Downs kuwa kweli, muda wote huu, wamekuwa wakitumia

1078
00:44:02,420 --> 00:44:03,430
Boolean misemo.

1079
00:44:03,430 --> 00:44:05,760
Katika kesi hii hapa, kama bonyeza checkbox ijayo

1080
00:44:05,760 --> 00:44:08,620
Bila shaka zaidi au sawa na 4.5, au ujao sawa kwa

1081
00:44:08,620 --> 00:44:11,200
Kitivo, wewe ni inayobainisha kujieleza Boolean.

1082
00:44:11,200 --> 00:44:14,780
Nionyesheni kozi ambayo kujieleza kwamba ni kweli.

1083
00:44:14,780 --> 00:44:17,080
Au kwa haki, hana mgogoro na kozi mimi nina

1084
00:44:17,080 --> 00:44:20,440
kuchukua, kama kwamba ni checked, basi ndiyo, unataka kuangalia

1085
00:44:20,440 --> 00:44:22,890
hali ya kuwa, mwingine unataka kupuuza.

1086
00:44:22,890 --> 00:44:25,170
Hivyo Boolean misemo ni aina ya pande zote, lakini wakati

1087
00:44:25,170 --> 00:44:28,080
sisi kuziweka katika hali, iwe KAMA hali, KAMA

1088
00:44:28,080 --> 00:44:30,480
Elses, au tunaweza hata simulate undani

1089
00:44:30,480 --> 00:44:32,830
ngazi, KAMA mwingine KAMA mwingine -

1090
00:44:32,830 --> 00:44:34,430
hivyo kwamba ni aina ya hali ternary.

1091
00:44:34,430 --> 00:44:36,920
Unaweza kwenda kwa njia hii au kwa njia hii au kwa njia hii.

1092
00:44:36,920 --> 00:44:39,680
Tunaweza kuweka mambo nesting kwenda katika mwelekeo tofauti.

1093
00:44:39,680 --> 00:44:41,800
>> Hivyo Scratch ina loops haya, kama Forever.

1094
00:44:41,800 --> 00:44:44,750
Ina makala haya kama Rudia 10, baadhi ya

1095
00:44:44,750 --> 00:44:46,260
finite idadi ya nyakati.

1096
00:44:46,260 --> 00:44:49,040
Tuna uwezo sasa kuweka vigezo, hivyo katika kesi hii

1097
00:44:49,040 --> 00:44:51,810
Nimekuwa alitangaza, kwa mfano, variable soksi inayoitwa.

1098
00:44:51,810 --> 00:44:54,340
Nimekuwa initialized 0, na kwamba bado mwingine mwelekeo

1099
00:44:54,340 --> 00:44:56,940
tunaweza wamechukua hapa pamoja na Yusufu, ambapo labda mimi

1100
00:44:56,940 --> 00:45:00,150
tu kuweka wimbo wa jinsi wengi soksi nina juu na kuondoa

1101
00:45:00,150 --> 00:45:03,490
mpango wakati thamani kwamba variable ni 2.

1102
00:45:03,490 --> 00:45:05,660
Hiyo itakuwa ni njia nyingine ya aina ya generalizing kwamba

1103
00:45:05,660 --> 00:45:08,820
tatizo na kufanya kitu tena na tena.

1104
00:45:08,820 --> 00:45:12,080
Naam, hebu kwenda mbele na sasa kuanzisha wanandoa mambo mapya.

1105
00:45:12,080 --> 00:45:14,100
Hivyo wale wa wewe kwa uzoefu kabla Programing mapenzi

1106
00:45:14,100 --> 00:45:17,120
kujua kwamba mengi ya lugha na arrays, vectors au au

1107
00:45:17,120 --> 00:45:19,970
orodha, na kwa kweli, Scratch ana kitu kama hii, pia.

1108
00:45:19,970 --> 00:45:22,510
Basi hebu angalia kama sisi hatuwezi kuchukua mambo ya ngazi ya pili hapa.

1109
00:45:22,510 --> 00:45:24,920
Kama mimi na uwezo, sasa, pamoja na vipande haya puzzle

1110
00:45:24,920 --> 00:45:29,080
kuongeza kitu, kama neno au idadi, kwa variable, siwezi

1111
00:45:29,080 --> 00:45:30,550
kuanza kukusanya vitu.

1112
00:45:30,550 --> 00:45:33,630
Na hii ni kweli pretty apropos kwa mambo kama michezo,

1113
00:45:33,630 --> 00:45:35,810
jukumu-kucheza michezo ambapo wewe ni aina ya kutembea karibu

1114
00:45:35,810 --> 00:45:38,600
baadhi dunia fantasy kukusanya vitu, kuokota mambo up,

1115
00:45:38,600 --> 00:45:39,900
kupata pointi, au kama.

1116
00:45:39,900 --> 00:45:42,310
Unaweza kutaka kuweka wimbo wa aina fulani ya hesabu, na

1117
00:45:42,310 --> 00:45:45,180
kweli, kwamba ni nini mmoja wa wanafunzi wetu wa zamani hapa alivyofanya kwa

1118
00:45:45,180 --> 00:45:47,750
kitu kinachoitwa Fruitcraft RPG.

1119
00:45:47,750 --> 00:45:51,820
>> Hivyo basi mimi kwenda mbele na kufungua hii kitu hapa, na katika

1120
00:45:51,820 --> 00:45:56,260
Fruitcraft, tuna dunia hii juu kwa juu.

1121
00:45:56,260 --> 00:45:58,820
Hivyo basi mimi kwenda mbele na bonyeza bendera ya kijani.

1122
00:45:58,820 --> 00:46:01,040
Ilani ya juu kushoto ni baadhi ya aina ya hesabu.

1123
00:46:01,040 --> 00:46:04,110
Hiyo kutekelezwa katika Scratch kama kile Tutamwita safu au

1124
00:46:04,110 --> 00:46:06,890
orodha, na sasa tuna hii uhuishaji kidogo.

1125
00:46:06,890 --> 00:46:10,440
Hivyo tu kama sisi kuanza mapema na hadithi hii upendo cookie,

1126
00:46:10,440 --> 00:46:13,320
na kisha sisi imepanda kwa paka na simba bahari, sasa tunaweza kuwa na

1127
00:46:13,320 --> 00:46:15,100
mambo ambayo ni zaidi hata ya maingiliano.

1128
00:46:15,100 --> 00:46:18,250
Na hii kidogo guy bluu, siwezi kuanza kuzunguka yake

1129
00:46:18,250 --> 00:46:19,500
kidogo nyumbani hapa.

1130
00:46:19,500 --> 00:46:22,570
Hivyo inaonekana kama yeye got exit chini hapa, hivyo mimi nina kutumia

1131
00:46:22,570 --> 00:46:25,260
funguo mishale, juu, chini, kushoto kulia.

1132
00:46:25,260 --> 00:46:28,370
Na sasa mimi nina nje, hivyo basi ni nini mimi nimepata hapa.

1133
00:46:28,370 --> 00:46:30,920
Inaonekana kama machungwa, na kwa kweli, kwa haraka kama mimi kugusa

1134
00:46:30,920 --> 00:46:33,110
machungwa, anapata plopped katika hesabu yangu.

1135
00:46:33,110 --> 00:46:35,640
Kama mimi kwenda juu hapa cherries, sasa nina kitu

1136
00:46:35,640 --> 00:46:36,760
mwingine katika hesabu yangu.

1137
00:46:36,760 --> 00:46:39,100
Na hii yote ni nzuri na cute, lakini fikiria kuhusu jinsi gani, sasa, hii

1138
00:46:39,100 --> 00:46:39,840
ni kutekelezwa.

1139
00:46:39,840 --> 00:46:42,490
Naam, tuna wazo hili la orodha, na kwamba inaonekana

1140
00:46:42,490 --> 00:46:45,470
puzzle kipande kwamba wewe tu kusema nini unataka kuongeza kwa hiyo, kuongeza

1141
00:46:45,470 --> 00:46:46,950
machungwa, kuongeza cherries.

1142
00:46:46,950 --> 00:46:48,540
Sasa, ni nini hiki kidogo guy bluu kufanya?

1143
00:46:48,540 --> 00:46:49,810
Naam, yeye ni sprite.

1144
00:46:49,810 --> 00:46:52,190
Na pengine, machungwa na cherries -

1145
00:46:52,190 --> 00:46:54,140
wao wenyewe walikuwa tofauti sprites.

1146
00:46:54,140 --> 00:46:56,980
Na kutumia hali katika misemo Boolean,

1147
00:46:56,980 --> 00:47:00,530
mwanafunzi alikuwa pengine na uwezo wa kueleza KAMA bluu guy ni

1148
00:47:00,530 --> 00:47:04,590
kugusa cherries THEN kuongeza cherries neno lake

1149
00:47:04,590 --> 00:47:07,890
hesabu, na kisha pia kujificha sprite cherry.

1150
00:47:07,890 --> 00:47:10,600
Hivyo chini ya Hood, kuna pengine bado ni cherry

1151
00:47:10,600 --> 00:47:11,350
sprite huko.

1152
00:47:11,350 --> 00:47:14,160
Tumekuwa tu aliiambia ni kuwa ufanisi asiyeonekana.

1153
00:47:14,160 --> 00:47:16,340
>> Sasa, kama mimi kuendelea kutembea zaidi ya hapa, tunaweza pia kufanya hivyo

1154
00:47:16,340 --> 00:47:19,150
kupakana kitu, ambapo naweza kwenda na kusoma ishara.

1155
00:47:19,150 --> 00:47:23,170
Hivyo kama guy bluu kugusa ishara, tunaweza kuwa na hii block Sema

1156
00:47:23,170 --> 00:47:26,455
tu kama paka akisema nasi katika maneno, hello, awali, "Got

1157
00:47:26,455 --> 00:47:26,880
baadhi ya matunda?

1158
00:47:26,880 --> 00:47:29,290
Kuleta kwa mahali matunda ". Sawa, hivyo sasa, inaonekana,

1159
00:47:29,290 --> 00:47:30,550
Nina maelekezo yangu.

1160
00:47:30,550 --> 00:47:33,050
Siwezi kwenda juu hapa mahali matunda, line up mwenyewe

1161
00:47:33,050 --> 00:47:33,740
na mlango.

1162
00:47:33,740 --> 00:47:35,390
Sasa, mimi nina katika hapa.

1163
00:47:35,390 --> 00:47:38,120
Naweza kwenda hadi mtu counter.

1164
00:47:38,120 --> 00:47:40,330
Yeye hutambua kwamba mimi nina karibu naye, hivyo hana kuwa

1165
00:47:40,330 --> 00:47:46,780
kabisa identically kugusa, na mimi kuwa alishinda mchezo.

1166
00:47:46,780 --> 00:47:49,890
Hivyo kuna tuna Fruitcraft RPG.

1167
00:47:49,890 --> 00:47:52,200
>> Hivyo tunaweza kufanya mambo hata zaidi ya juu kuliko huu.

1168
00:47:52,200 --> 00:47:53,200
Tunaweza kuongeza sauti.

1169
00:47:53,200 --> 00:47:54,610
Tunaweza kuongeza randomness Pseudo.

1170
00:47:54,610 --> 00:47:56,260
Tunaweza kuongeza utata.

1171
00:47:56,260 --> 00:47:58,490
Hebu kwenda mbele hapa, na badala ya kufanya hivyo mwenyewe,

1172
00:47:58,490 --> 00:48:01,240
napenda kuonyesha moja ya maoni ya kisasa zaidi

1173
00:48:01,240 --> 00:48:06,640
tulipata mwaka jana kutoka kwa mtu mmoja aitwaye Blake.

1174
00:48:06,640 --> 00:48:08,910
Je, tunaweza kuwa na moja ya kujitolea ambao ni starehe ya kuonekana kwenye

1175
00:48:08,910 --> 00:48:12,600
kamera na ni kwa ajili ya kucheza mchezo?

1176
00:48:12,600 --> 00:48:13,450
Vipi kuhusu haki pale?

1177
00:48:13,450 --> 00:48:15,380
Kuja juu juu.

1178
00:48:15,380 --> 00:48:19,680
Haki ya wote, hivyo mchezo kwamba una tu kutojua

1179
00:48:19,680 --> 00:48:20,780
walijitolea kucheza -

1180
00:48:20,780 --> 00:48:25,910
[Applause]

1181
00:48:25,910 --> 00:48:28,610
DAVID Malan: - ni kitu kutoka yesteryear kuitwa

1182
00:48:28,610 --> 00:48:30,100
"Frogger." Jina lako ni gani?

1183
00:48:30,100 --> 00:48:30,730
Renda: Renda.

1184
00:48:30,730 --> 00:48:31,050
DAVID Malan: Redna?

1185
00:48:31,050 --> 00:48:32,530
Renda: Ni kama Brenda na b.

1186
00:48:32,530 --> 00:48:33,190
DAVID Malan: Okay, Renda.

1187
00:48:33,190 --> 00:48:33,590
Daudi.

1188
00:48:33,590 --> 00:48:34,580
Nice kukutana na wewe.

1189
00:48:34,580 --> 00:48:38,690
>> Hivyo hapa katika "Frogger," na kama tunaweza kuongeza kiasi tu

1190
00:48:38,690 --> 00:48:39,780
kidogo kidogo, wewe ni hii kidogo

1191
00:48:39,780 --> 00:48:41,010
kijani chura juu ya chini.

1192
00:48:41,010 --> 00:48:43,940
Unaweza kutumia wa kushoto, kulia, juu na chini, na lengo ni

1193
00:48:43,940 --> 00:48:46,510
kuvuka barabara, kuvuka mto, na kugusa pedi lily

1194
00:48:46,510 --> 00:48:47,760
saa ya juu.

1195
00:48:52,090 --> 00:48:53,440
Aw.

1196
00:48:53,440 --> 00:48:54,630
Moja zaidi t -

1197
00:48:54,630 --> 00:48:56,400
Redo, wote haki?

1198
00:48:56,400 --> 00:48:58,890
Hebu hit stop.

1199
00:48:58,890 --> 00:49:00,140
Hakuna mtu alipoona kuwa.

1200
00:49:10,470 --> 00:49:12,930
[Applause]

1201
00:49:17,023 --> 00:49:17,850
[Applause]

1202
00:49:17,850 --> 00:49:19,341
DAVID Malan: Yeah.

1203
00:49:19,341 --> 00:49:20,832
Vizuri sana kufanyika.

1204
00:49:20,832 --> 00:49:22,082
Bora, asante.

1205
00:49:27,300 --> 00:49:29,430
>> Hivyo kwamba kulikuwa Frogger. Sasa kwa kuwa unajua nini wameweza

1206
00:49:29,430 --> 00:49:32,170
wamezipata wenyewe ndani, kujitolea moja zaidi kwa tofauti

1207
00:49:32,170 --> 00:49:34,910
mchezo in na mwanafunzi mwingine.

1208
00:49:34,910 --> 00:49:35,560
Wewe unataka kuja juu juu?

1209
00:49:35,560 --> 00:49:36,576
Nini jina lako?

1210
00:49:36,576 --> 00:49:37,000
RICHARD: Richard.

1211
00:49:37,000 --> 00:49:37,420
DAVID Malan: Richard.

1212
00:49:37,420 --> 00:49:39,732
Haki zote, Richard, kuja juu juu.

1213
00:49:39,732 --> 00:49:42,187
[Applause]

1214
00:49:45,140 --> 00:49:47,030
DAVID Malan: Una kitu ambacho itabidi sauti

1215
00:49:47,030 --> 00:49:54,180
familiar hivi karibuni, hivyo hapa ni maelekezo yako.

1216
00:49:54,180 --> 00:49:56,580
Hivyo katika dakika moja, vipande puzzle baadhi ni kwenda kitabu juu

1217
00:49:56,580 --> 00:49:58,150
kutoka screen kwamba kuangalia aidha kushoto

1218
00:49:58,150 --> 00:49:59,450
au haki juu au chini.

1219
00:49:59,450 --> 00:50:01,230
Wewe utaenda kuwa na hit funguo arrow kwa namna

1220
00:50:01,230 --> 00:50:04,540
kwamba sambamba na vipande wale wanaojitokeza na puzzle

1221
00:50:04,540 --> 00:50:05,720
placeholders kwa juu.

1222
00:50:05,720 --> 00:50:07,500
Hivyo wakati wewe kuona mshale wa kushoto, na mistari yake juu na kushoto

1223
00:50:07,500 --> 00:50:09,260
mshale, hit arrow kushoto.

1224
00:50:09,260 --> 00:50:10,866
Unaweza kuanza.

1225
00:50:10,866 --> 00:50:13,674
[MUSIC - "IMARA" KAYNE WEST]

1226
00:51:21,222 --> 00:51:23,470
DAVID Malan: zote haki, big pande zote ya applause kwa Richard.

1227
00:51:23,470 --> 00:51:26,082
[Applause]

1228
00:51:32,426 --> 00:51:33,720
DAVID Malan: Very well done.

1229
00:51:33,720 --> 00:51:34,110
Asante.

1230
00:51:34,110 --> 00:51:37,104
[Applause]

1231
00:51:41,600 --> 00:51:44,330
>> DAVID Malan: Basi na furaha na, inaonekana, ni aina ya

1232
00:51:44,330 --> 00:51:46,590
vitisho kama inaweza kuwa kutekeleza kitu kama

1233
00:51:46,590 --> 00:51:49,550
inaonekana kisasa kama hii, kutambua kwamba mwanafunzi

1234
00:51:49,550 --> 00:51:51,450
hawakuwa yaliyowekwa na kuandika tu hii yote kwa mara moja.

1235
00:51:51,450 --> 00:51:54,200
Badala yake, unaweza kuvunja tatizo kama inaonekana tata

1236
00:51:54,200 --> 00:51:56,840
kama hii katika vipande ndogo sana, na hii, pia, ni

1237
00:51:56,840 --> 00:51:57,560
kwenda kuwa mandhari.

1238
00:51:57,560 --> 00:52:00,490
Kitu mbaya unaweza kufanya katika kuandika mpango katika yoyote zaidi

1239
00:52:00,490 --> 00:52:03,480
Lugha ni kukaa chini, kupata kweli msisimko, kuandika

1240
00:52:03,480 --> 00:52:07,200
zima kitu damn, na kisha tu matumaini kwamba kazi kwa

1241
00:52:07,200 --> 00:52:08,510
wakati wewe ni kumaliza kuandika.

1242
00:52:08,510 --> 00:52:10,920
Badala yake, mchakato wa programu lazima ujumla

1243
00:52:10,920 --> 00:52:13,440
sana makusudi, sana iterative, ambapo wewe tu

1244
00:52:13,440 --> 00:52:16,955
kuweka hatua ndogo sana kwa ajili yenu wenyewe, vipande bite-kawaida

1245
00:52:16,955 --> 00:52:20,070
unataka bite mbali, na hivyo kuwa una hizi sanity

1246
00:52:20,070 --> 00:52:21,740
hundi, kidogo milstenarna unaweza kukutana.

1247
00:52:21,740 --> 00:52:24,170
Na kisha kujenga juu ya wale kujenga zaidi

1248
00:52:24,170 --> 00:52:25,400
kisasa mambo bado.

1249
00:52:25,400 --> 00:52:26,820
>> Hivyo kwa mfano, ni jinsi gani sisi kwenda kuhusu

1250
00:52:26,820 --> 00:52:28,380
kutekeleza mchezo kama hii?

1251
00:52:28,380 --> 00:52:30,160
Naam, kusema ukweli, mimi bila ya shaka tu kuanza kwa

1252
00:52:30,160 --> 00:52:32,260
vumilianeni muhimu kwa wakati.

1253
00:52:32,260 --> 00:52:34,840
Hebu tu kutekeleza msaada kwa ajili ya mshale wa kushoto.

1254
00:52:34,840 --> 00:52:37,610
Hivyo mwanafunzi alikuwa na namna fulani kujenga katika Photoshop, au katika

1255
00:52:37,610 --> 00:52:40,340
Scratch yenyewe kutumia kidogo graphical mhariri,

1256
00:52:40,340 --> 00:52:42,680
arrow muhimu kwamba inaonekana kama moja ya juu kushoto hapo, tu

1257
00:52:42,680 --> 00:52:43,910
placeholder kijivu.

1258
00:52:43,910 --> 00:52:46,610
Kisha mwanafunzi alikuwa na kufikiri nini x, y kwa kuratibu

1259
00:52:46,610 --> 00:52:48,380
kuweka hayo, ambapo ili kuweka katika dirisha.

1260
00:52:48,380 --> 00:52:50,730
0, 0 ni hapa juu, hivyo kuwa na takwimu nje ya idadi ya

1261
00:52:50,730 --> 00:52:53,690
Ukubwa, au dots, ili kukabiliana na kwamba mshale kutoka

1262
00:52:53,690 --> 00:52:54,800
juu ya screen.

1263
00:52:54,800 --> 00:52:57,040
Na kisha mara moja kwamba katika mahali, mpango yako haina kweli

1264
00:52:57,040 --> 00:53:00,380
kufanya chochote bado, hivyo basi haja sprite pili, kwa

1265
00:53:00,380 --> 00:53:04,470
mfano arrow kijani hiyo pia akizungumzia kushoto, na wewe

1266
00:53:04,470 --> 00:53:06,710
basi haja ya kuanza kuandika scripts baadhi kwa ajili yake.

1267
00:53:06,710 --> 00:53:09,310
>> Na utaona, pengine, kwamba mambo haya alianza kuja saa

1268
00:53:09,310 --> 00:53:11,470
mbalimbali kasi, na rangi walikuwa katika tofauti

1269
00:53:11,470 --> 00:53:13,750
maeneo, na kwamba kwa sababu mwanafunzi kutumika kidogo ya

1270
00:53:13,750 --> 00:53:14,990
Pseudo randomness.

1271
00:53:14,990 --> 00:53:17,440
Na kwa randomness Pseudo, mimi tu maana pick idadi

1272
00:53:17,440 --> 00:53:20,230
kati ya kitu na kitu kwa sababu unaweza

1273
00:53:20,230 --> 00:53:22,890
kuanza mambo ramani, kama kama namba ni kati ya mmoja na

1274
00:53:22,890 --> 00:53:24,940
tano, vizuri, wacha kufanya kitu kijani.

1275
00:53:24,940 --> 00:53:28,290
Kama ni kati ya 6 na 10, wacha kufanya kipande puzzle

1276
00:53:28,290 --> 00:53:29,730
nyekundu badala yake.

1277
00:53:29,730 --> 00:53:31,840
Hiyo kwa muda mrefu kama una njia ya kuzalisha aina fulani ya

1278
00:53:31,840 --> 00:53:34,730
randomness, unaweza kisha kufanya maamuzi kwa kuzingatia kwamba

1279
00:53:34,730 --> 00:53:35,260
randomness.

1280
00:53:35,260 --> 00:53:37,490
Na mimi kushika Pseudo akisema random kwa sababu kuna

1281
00:53:37,490 --> 00:53:38,390
kidogo chafu siri.

1282
00:53:38,390 --> 00:53:41,130
Kompyuta hawezi kuja na idadi random.

1283
00:53:41,130 --> 00:53:42,800
Wanaweza tu kufanya nini re aliiambia kwa sababu

1284
00:53:42,800 --> 00:53:44,110
wao uko na mwanadamu vifaa.

1285
00:53:44,110 --> 00:53:45,880
Hawawezi tu nadhani idadi kama binadamu sisi

1286
00:53:45,880 --> 00:53:46,960
kujisikia kama tunaweza.

1287
00:53:46,960 --> 00:53:50,970
kompyuta ina kufanya kitu hisabati kwa conjure up

1288
00:53:50,970 --> 00:53:53,970
udanganyifu wa idadi ya hisabati, wakati mwingine kwa kutumia

1289
00:53:53,970 --> 00:53:57,420
sasa siku ya wakati kama pembejeo kwa kuhesabia nje nini

1290
00:53:57,420 --> 00:53:59,570
idadi ya kurudi, lakini zaidi juu ya kwamba wakati mwingine.

1291
00:53:59,570 --> 00:54:02,060
Kwa sasa, tu kujua kwamba tunaweza kuzalisha randomness Pseudo.

1292
00:54:02,060 --> 00:54:04,610
>> Hivyo mara tu nina uwezo kwa mshale wa kushoto ili kuanza

1293
00:54:04,610 --> 00:54:07,990
kuonekana kwa nyakati tofauti na kwa kasi tofauti, basi

1294
00:54:07,990 --> 00:54:10,230
Siwezi kwenda nyuma na kuongeza baadhi ya hizi KAMA masharti.

1295
00:54:10,230 --> 00:54:14,950
IF sprite hii ni kugusa moja nyingine, na kushoto arrow

1296
00:54:14,950 --> 00:54:16,330
ufunguo imekuwa taabu -

1297
00:54:16,330 --> 00:54:17,900
hivyo tatu hali katika kesi hiyo.

1298
00:54:17,900 --> 00:54:20,750
Naweza kutumia NA kuzuia pengine, katika kesi hiyo -

1299
00:54:20,750 --> 00:54:23,210
BASI nataka kwenda mbele na increment score.

1300
00:54:23,210 --> 00:54:25,130
Na saa ya juu, tuna score, tuna ajabu,

1301
00:54:25,130 --> 00:54:26,510
Cool, mwema, na Boo.

1302
00:54:26,510 --> 00:54:29,810
Hivyo kuna inaonekana tano vigezo kuwa mwanafunzi huyu

1303
00:54:29,810 --> 00:54:32,220
kutumika kwa kuweka wimbo wa metrics hizi mbalimbali.

1304
00:54:32,220 --> 00:54:34,180
Hivyo katika muda mfupi, matokeo ya mwisho ni ya kushangaza.

1305
00:54:34,180 --> 00:54:37,320
Ni furaha, ni furaha kwa kucheza, ni kujishughulisha, lakini hii si

1306
00:54:37,320 --> 00:54:38,380
ambapo mwanafunzi alianza.

1307
00:54:38,380 --> 00:54:42,210
Yeye au yeye kuanza saa seti ndogo sana ya hatua.

1308
00:54:42,210 --> 00:54:44,470
>> Kwa hiyo kile ni baadhi nyingine matofali ya ujenzi kwamba tunaweza

1309
00:54:44,470 --> 00:54:45,760
weave katika programu hizi?

1310
00:54:45,760 --> 00:54:48,750
Naam, kuna dhana hii katika lugha nyingine nyingi,

1311
00:54:48,750 --> 00:54:50,730
Scratch kati yao, unaojulikana kama threads.

1312
00:54:50,730 --> 00:54:54,660
Hivyo kompyuta inaweza kweli si kweli kufanya mambo mengi kwa

1313
00:54:54,660 --> 00:54:56,730
wakati, angalau si kawaida.

1314
00:54:56,730 --> 00:54:59,930
Badala yake, kompyuta ujumla ina moja tu CPU, na hata

1315
00:54:59,930 --> 00:55:02,230
ingawa kompyuta ni super haraka na unaweza, kwa hiyo,

1316
00:55:02,230 --> 00:55:04,740
kujenga udanganyifu wa kufanya mambo nyingi kwa mara moja -

1317
00:55:04,740 --> 00:55:06,180
kuangalia pepe yako, kupata papo

1318
00:55:06,180 --> 00:55:07,770
ujumbe, uchapishaji hati -

1319
00:55:07,770 --> 00:55:11,530
kweli, kompyuta tu kuruka kutoka uchapishaji kwa IMing

1320
00:55:11,530 --> 00:55:15,160
kwa emailing, nyuma na nyuma na nyuma na nje kwa kasi kwamba sisi

1321
00:55:15,160 --> 00:55:18,170
polepole binadamu witted tu wala kutambua kwamba ni kweli

1322
00:55:18,170 --> 00:55:21,240
mbio hizo mipango kidogo kwa wakati.

1323
00:55:21,240 --> 00:55:23,960
Sasa, hii kidogo ya nyeupe uongo siku hizi kwa sababu, siku hizi,

1324
00:55:23,960 --> 00:55:26,740
wengi kompyuta yetu ni kile kinachojulikana mbalimbali ya msingi, hivyo

1325
00:55:26,740 --> 00:55:29,760
kuwa moja CPU lakini cores nyingi, ambayo ni aina ya kama

1326
00:55:29,760 --> 00:55:31,760
kuwa CPUs nyingi.

1327
00:55:31,760 --> 00:55:35,020
>> Na hivyo wakati mwingine, kompyuta inaweza kweli kufanya mambo mbalimbali

1328
00:55:35,020 --> 00:55:38,500
wakati huo, lakini kwa ujumla ndani ya mpango, mipango

1329
00:55:38,500 --> 00:55:40,200
kutegemea juu ya mambo haya kuitwa threads.

1330
00:55:40,200 --> 00:55:43,160
Hivyo thread ni aina ya kama mpango miniatyr kwamba unaweza

1331
00:55:43,160 --> 00:55:46,540
zipo sambamba mpango mwingine miniatyr na wanaweza kukimbia

1332
00:55:46,540 --> 00:55:51,250
sambamba, au angalau wanaweza kukimbia chini ya udanganyifu kwamba

1333
00:55:51,250 --> 00:55:52,990
wanakimbia wakati huo huo.

1334
00:55:52,990 --> 00:55:55,060
Hivyo Scratch inasaidia mambo haya kuitwa threads.

1335
00:55:55,060 --> 00:55:57,580
Unaweza kuwa na scripts nyingi utekelezaji mara moja, tu kama sisi

1336
00:55:57,580 --> 00:56:00,220
alivyofanya kwa simba bahari, na hii inaruhusu sisi kweli

1337
00:56:00,220 --> 00:56:03,620
kisha kuwa mwingiliano kati ya sprites haya.

1338
00:56:03,620 --> 00:56:09,910
Hebu kwenda mbele hapa na kuvuta juu, hebu sema, nyuzi, na

1339
00:56:09,910 --> 00:56:11,870
kucheza hii kama ifuatavyo.

1340
00:56:11,870 --> 00:56:13,950
Tuna sprites wawili, kila mmoja ambaye tutaweza kuona

1341
00:56:13,950 --> 00:56:15,720
ina moja tu script.

1342
00:56:15,720 --> 00:56:18,000
Na utaona kuna inaonekana kuwa baadhi ya akili katika

1343
00:56:18,000 --> 00:56:21,335
paka katika hii moja kwa sababu yeye ni kupata karibu -

1344
00:56:21,335 --> 00:56:21,730
[Mngurumo]

1345
00:56:21,730 --> 00:56:24,540
DAVID Malan: - na karibu na ndege mdogo.

1346
00:56:24,540 --> 00:56:26,570
>> Hivyo jinsi ni uendeshaji ndege?

1347
00:56:26,570 --> 00:56:28,200
Naam, hebu kuchukua kuangalia ndege wa kwanza.

1348
00:56:28,200 --> 00:56:31,220
script ndege alisema wakati bendera ya kijani ni clicked, kwenda x

1349
00:56:31,220 --> 00:56:34,020
sawa na hasi 115 na 150 y sawa.

1350
00:56:34,020 --> 00:56:37,010
Hivyo mimi tu figured nje mahali ambapo random nilitaka

1351
00:56:37,010 --> 00:56:39,580
ndege kuanza, na mimi tu plopped naye huko na default.

1352
00:56:39,580 --> 00:56:42,800
Kisha Forever KAMA si kugusa paka, hivyo hii ni tofauti

1353
00:56:42,800 --> 00:56:45,080
aina ya kujenga looping, lakini wazo moja, kufanya hivyo tena na

1354
00:56:45,080 --> 00:56:45,780
tena na tena.

1355
00:56:45,780 --> 00:56:49,410
Hiyo kwa muda mrefu kama wewe si kugusa paka, hoja hatua tatu, na

1356
00:56:49,410 --> 00:56:51,680
kama wewe ni juu bounce makali, ambapo ni aina ya

1357
00:56:51,680 --> 00:56:53,320
reflection katika maana ya billiard.

1358
00:56:53,320 --> 00:56:56,140
Basi hiyo ni jinsi ndege ni kuhamia karibu aina ya

1359
00:56:56,140 --> 00:56:58,890
inaonekana nasibu, lakini ni kwa sababu tu ni bouncing off

1360
00:56:58,890 --> 00:57:00,170
kuta katika kesi hii.

1361
00:57:00,170 --> 00:57:03,170
>> Sasa paka, wakati huo huo, ni aina ya cheating.

1362
00:57:03,170 --> 00:57:05,520
paka, wakati bendera ya kijani ni clicked, ndiyo, inaanzia

1363
00:57:05,520 --> 00:57:07,390
baadhi ya mahali, mahali random -

1364
00:57:07,390 --> 00:57:09,590
angalau katika sehemu kama kwa pick

1365
00:57:09,590 --> 00:57:11,430
random kijani block pale -

1366
00:57:11,430 --> 00:57:14,660
na kisha Forever KAMA kugusa ndege, kucheza sauti simba,

1367
00:57:14,660 --> 00:57:15,790
na kisha kuacha script.

1368
00:57:15,790 --> 00:57:18,560
Hivyo wakati mimi alisema kuondoa, au exit kabla, kuna puzzle

1369
00:57:18,560 --> 00:57:20,600
kipande katika Scratch kwamba kuua tu mpango saa kwamba

1370
00:57:20,600 --> 00:57:22,900
uhakika kwa sababu ni aina ya mantiki kufanyika.

1371
00:57:22,900 --> 00:57:25,030
Lakini vinginevyo, hapa, taarifa ya nini kinaendelea kutokea.

1372
00:57:25,030 --> 00:57:28,470
Uhakika kuelekea ndege na hoja hatua moja.

1373
00:57:28,470 --> 00:57:31,390
Hivyo hatua hii kuelekea ndege ni aina ya paka faida

1374
00:57:31,390 --> 00:57:34,640
ana katika kwamba ni juu ya ndege katika homing kusonga, na tunaweza

1375
00:57:34,640 --> 00:57:37,370
sasa kufanya mpango huu wote zaidi ya kuvutia.

1376
00:57:37,370 --> 00:57:41,520
Badala ya kusonga hatua moja kwa wakati kwa mzunguko CPU, kwa

1377
00:57:41,520 --> 00:57:44,280
mgomo toll ya kengele, ili kuzungumza, na napenda kwenda mbele

1378
00:57:44,280 --> 00:57:47,350
hoja, hebu sema, hatua tano kwa wakati kama paka.

1379
00:57:47,350 --> 00:57:51,120
Bonyeza kukimbia, na sasa yeye kweli alimkuta huyo haraka.

1380
00:57:51,120 --> 00:57:55,620
Kama sisi mara mbili zaidi jambo hili kwa hatua 10, ni aina ya inakwenda

1381
00:57:55,620 --> 00:57:56,370
haki kwa ajili yake.

1382
00:57:56,370 --> 00:57:57,750
Sasa, tunaweza kutoa ndege,

1383
00:57:57,750 --> 00:57:59,540
labda, kidogo ya faida.

1384
00:57:59,540 --> 00:58:02,370
Hebu kwenda ndege na kusema badala ya kusonga hatua tatu,

1385
00:58:02,370 --> 00:58:07,140
hebu hoja yake hatua 30.

1386
00:58:07,140 --> 00:58:08,700
Lakini bado got hawakupata katika mwisho.

1387
00:58:08,700 --> 00:58:10,430
>> Hivyo hapa, tuna threads mbili.

1388
00:58:10,430 --> 00:58:13,230
Ni wakishikiliwa katika Scratch na scripts mbili na mbili

1389
00:58:13,230 --> 00:58:16,150
sprites, lakini wazo katika lugha nyingine ni kwamba unaweza

1390
00:58:16,150 --> 00:58:19,220
kuandika, kimsingi, programu nyingi sana kama hii na kuwa na

1391
00:58:19,220 --> 00:58:22,950
yao kukimbia kweli, au imaginarily, sambamba.

1392
00:58:22,950 --> 00:58:25,280
>> Sasa, kuna pia dhana hii katika programu inayojulikana kama

1393
00:58:25,280 --> 00:58:28,010
matukio, na hii ni kitu hatutaweza kuona katika C,

1394
00:58:28,010 --> 00:58:30,500
Lugha inayojulikana kama C. Sisi kuona kuelekea mwisho wa muhula

1395
00:58:30,500 --> 00:58:33,240
katika programu ya mtandao, wakati sisi kuanzisha JavaScript na

1396
00:58:33,240 --> 00:58:36,970
dhana ya kurasa za mtandao jengo ni nguvu na kuingiliana

1397
00:58:36,970 --> 00:58:37,710
na watumiaji.

1398
00:58:37,710 --> 00:58:40,430
Hivyo katika kesi hii, tuna mfano rahisi sana wa wawili

1399
00:58:40,430 --> 00:58:43,860
sprites, mvulana na msichana, kila mmoja ambaye una husika yao

1400
00:58:43,860 --> 00:58:48,040
nyuzi, lakini kwa namna fulani hizi mbili ni inter-wa mawasiliano kwa njia ya

1401
00:58:48,040 --> 00:58:49,490
ya kitu kinachoitwa matukio.

1402
00:58:49,490 --> 00:58:52,750
Hivyo basi mimi kwenda mbele hapa na kuvuta script kijana,

1403
00:58:52,750 --> 00:58:54,050
ambayo inaonekana kama hii.

1404
00:58:54,050 --> 00:58:57,510
Wakati bendera ya kijani clicked, milele kufanya yafuatayo.

1405
00:58:57,510 --> 00:59:01,510
Kama Space muhimu, au Bar Space, ni taabu, wanasema

1406
00:59:01,510 --> 00:59:03,900
Marco kwa sekunde mbili, kwamba ni rena estetiska juu ya

1407
00:59:03,900 --> 00:59:06,860
screen, kidogo Bubble hotuba, lakini kisha matangazo.

1408
00:59:06,860 --> 00:59:09,240
>> Hivyo matangazo ni mwingine kipande Scratch kwamba

1409
00:59:09,240 --> 00:59:12,050
mwakilishi wa darasa ya utendaji katika programu

1410
00:59:12,050 --> 00:59:15,080
ambayo inaruhusu programu mbalimbali, tofauti nyuzi,

1411
00:59:15,080 --> 00:59:17,120
kwa inter-kuwasiliana, kwa namna fulani kutuma

1412
00:59:17,120 --> 00:59:18,520
ujumbe, mmoja hadi mwingine.

1413
00:59:18,520 --> 00:59:21,930
Kupita kipande cha karatasi katika darasa ni aina ya tech chini

1414
00:59:21,930 --> 00:59:22,700
sawa.

1415
00:59:22,700 --> 00:59:24,300
Hivyo matangazo ya tukio hilo.

1416
00:59:24,300 --> 00:59:26,210
Siwezi kutuma ujumbe huu, na tukio neno

1417
00:59:26,210 --> 00:59:27,270
ni kabisa holela.

1418
00:59:27,270 --> 00:59:30,000
Scratch wakati mwingine ina heka hizi kushuka, hivyo mimi tu alikuja

1419
00:59:30,000 --> 00:59:33,230
na neno random kama tukio kwa sababu sasa, nini kijana anafanya

1420
00:59:33,230 --> 00:59:36,600
wakati mimi vyombo vya habari muhimu ni yeye matangazo ya tukio hili.

1421
00:59:36,600 --> 00:59:39,270
Na kama mimi kuangalia sasa katika script msichana, script yake ni

1422
00:59:39,270 --> 00:59:42,690
super rahisi kwa sababu wote anahitaji kufanya si kitendo wakati

1423
00:59:42,690 --> 00:59:44,100
bendera ya kijani ni clicked.

1424
00:59:44,100 --> 00:59:47,910
Yeye ni iliyoundwa na hatua wakati anapata quote, unquote,

1425
00:59:47,910 --> 00:59:51,210
"Tukio", na katika hatua hiyo, yeye anasikiliza hiyo kwa

1426
00:59:51,210 --> 00:59:52,960
tukio kinachojulikana tena na tena.

1427
00:59:52,960 --> 00:59:55,790
Haraka kama yeye inapata kuwa tukio, yeye atakuja kelele

1428
00:59:55,790 --> 00:59:57,680
Polo kwa sekunde mbili.

1429
00:59:57,680 --> 01:00:01,090
>> Na hivyo unaweza labda infer kutoka hii hasa ni nini

1430
01:00:01,090 --> 01:00:03,190
matokeo ya pili ni kwenda kuwa.

1431
01:00:03,190 --> 01:00:04,910
Hebu bonyeza bendera ya kijani.

1432
01:00:04,910 --> 01:00:06,610
Hakuna kinachotokea kwa sababu mimi haja ya kufanya nini?

1433
01:00:06,610 --> 01:00:07,310
Watazamaji: Nafasi Bar.

1434
01:00:07,310 --> 01:00:08,630
DAVID Malan: Nafasi Bar.

1435
01:00:08,630 --> 01:00:11,990
Kijana anasema Marco, msichana anasema Polo.

1436
01:00:11,990 --> 01:00:13,670
Lakini si kwamba vigumu coded per se.

1437
01:00:13,670 --> 01:00:16,740
Hiyo ni inter-mawasiliano kati ya scripts, hivyo sasa sisi

1438
01:00:16,740 --> 01:00:19,240
wana uwezo wa kufanya mipango magumu hata zaidi ambapo

1439
01:00:19,240 --> 01:00:22,830
hizi mbili ni namna fulani baina ya kuwasiliana.

1440
01:00:22,830 --> 01:00:25,260
>> Hivyo katika kile maelekezo tunaweza kuchukua hii?

1441
01:00:25,260 --> 01:00:28,260
Naam, katika kuweka tatizo 0, kwa kweli, lengo ni

1442
01:00:28,260 --> 01:00:29,830
kuwa na furaha na Scratch.

1443
01:00:29,830 --> 01:00:32,440
Kwa toleo hacker, itabidi badala yake kuwa na furaha na zaidi

1444
01:00:32,440 --> 01:00:35,850
kisasa toleo la Scratch kuitwa BYOB, Kujenga

1445
01:00:35,850 --> 01:00:38,040
Blocks Your Own, lakini wazo ni sawa.

1446
01:00:38,040 --> 01:00:38,780
Wewe utakuwa na uwezo -

1447
01:00:38,780 --> 01:00:39,710
Ndiyo, hiyo ilikuwa makusudi.

1448
01:00:39,710 --> 01:00:42,450
Ni alifika kutoka Berkeley.

1449
01:00:42,450 --> 01:00:45,200
BYOB ni toleo hacker toleo hili, lakini wote wawili

1450
01:00:45,200 --> 01:00:48,180
idadi ya watu, kiwango toleo na toleo hacker sawa,

1451
01:00:48,180 --> 01:00:50,940
Lengo katika mkono kwa wiki ijayo ni kweli tu kwa kupiga mbizi katika

1452
01:00:50,940 --> 01:00:53,050
kina, kupata mikono yako chafu na programu, na kufanya

1453
01:00:53,050 --> 01:00:55,240
kitu kuvutia, kufanya kitu maingiliano, kufanya

1454
01:00:55,240 --> 01:00:58,020
kitu kisanii, kufanya kitu fun kwa kweli

1455
01:00:58,020 --> 01:01:01,020
kuonyesha, hivyo kuwa na mwisho wa wiki, itabidi mradi,

1456
01:01:01,020 --> 01:01:03,770
si tu kwa pset yako ya kwanza CS50, lakini itabidi

1457
01:01:03,770 --> 01:01:05,620
kidogo kitu ambacho unaweza kuonyesha mbali katika Annenberg kwa

1458
01:01:05,620 --> 01:01:08,830
marafiki au hata familia yake na kuweka kwa tovuti MIT.

1459
01:01:08,830 --> 01:01:11,760
Na hivyo kama mimi alisema Jumatano, tunatarajia 90% ya darasa,

1460
01:01:11,760 --> 01:01:13,970
ujumla, kufanya matoleo ya kiwango.

1461
01:01:13,970 --> 01:01:16,660
Kutambua kwamba pia kuna hii plagi kwa wale ambao

1462
01:01:16,660 --> 01:01:18,990
ili vinginevyo kupata mwenyewe kidogo kuchoka na misingi

1463
01:01:18,990 --> 01:01:21,650
na kweli wanataka kupiga mbizi katika hila na maono tayari

1464
01:01:21,650 --> 01:01:25,380
kuwa na background kabla katika hii zaidi ya kirafiki

1465
01:01:25,380 --> 01:01:26,240
mazingira.

1466
01:01:26,240 --> 01:01:29,030
>> Hivyo basi mimi kuvuta up moja nyingine mfano kwamba mmoja wa zamani zetu

1467
01:01:29,030 --> 01:01:33,830
wanafunzi hapa alifanya na kuwaambia kitu kidogo kupitia wimbo.

1468
01:01:33,830 --> 01:01:37,430
Hiyo vile vile, kama ina hili, kufikiri kuhusu jinsi ya kwenda juu

1469
01:01:37,430 --> 01:01:40,520
kutekeleza mpango huu kwa kutumia just hizi

1470
01:01:40,520 --> 01:01:44,180
jengo vitalu, kidogo kidogo ya randomness Pseudo, na

1471
01:01:44,180 --> 01:01:46,010
kidogo ya nyimbo zilizozoeleka.

1472
01:01:46,010 --> 01:01:47,910
Kama tunaweza kuongeza kiasi kidogo tu?

1473
01:01:47,910 --> 01:01:49,160
[MUSIC - "Ni mvua WATU" WASICHANA Hali ya hewa]

1474
01:03:02,261 --> 01:03:03,930
>> DAVID Malan: Hiyo ni kwa CS50.

1475
01:03:03,930 --> 01:03:05,860
Sisi kuona juu ya Jumatatu.

1476
01:03:05,860 --> 01:03:21,152
[Applause]