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>> [Daqq tal-mużika]

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ROBERT KRABEK: Hello, guys.

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Jisimni Robert Krabek, u
I se jkunu tagħlim inti guys

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00:00:09,980 --> 00:00:15,470
kif jinbarax il-web bl
Nokogiri, li hija librerija Ruby,

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00:00:15,470 --> 00:00:17,566
u Kimono, li hija estensjoni Chrome.

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00:00:17,566 --> 00:00:20,940

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>> Allura l-ewwel hemm
koppja affarijiet li inti

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00:00:25,010 --> 00:00:28,790
jista 'jagħmel jekk forsi inti kont qed
tagħmel l-psets s'issa

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00:00:28,790 --> 00:00:31,170
u workspace tiegħek hija
jkollna ftit sħiħa.

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00:00:31,170 --> 00:00:37,060
Nistgħu ngħidu biss tmur u
toħloq spazju ta 'xogħol ġdid għalik

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00:00:37,060 --> 00:00:41,220
li biss tagħmel marka proġett ġdid fl.

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Mela jekk inti tixtieq li tkompli
jaħdmu fil-template CS50 ID

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li inti bħalissa għandhom,
tħossok liberu, u inti tista 'sempliċement

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jinstallaw Nokogiri ma CFLAGS
gem equals-- jinstallaw nokogiri.

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Iżda altrimenti jien ser nuruk
kif jiġu stabbiliti waħda ġdida up.

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U allura dan huwa essenzjalment
twaqqa roti ta 'taħriġ aktar.

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U int kodifikazzjoni bħal li kieku inti
biss kodifikazzjoni Sublime jew xi ħaġa.

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Mela jekk aħna bidla li fuq.

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>> Allura ngħid dan huwa attwali tiegħek CS 50 ID.

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Tista 'biss tmur għall Cloud9 hawn.

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Inti tista 'tmur għall dashboard tiegħek.

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Għandu jtella postijiet tax-xogħol tab.

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U allura inti tista 'sempliċement ikklikkja
hawn, Oħloq Workspace Ġdid.

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Isem workspace ġdida tiegħek,
forsi test, jew brix.

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U mbagħad ikklikkja dan tab custom hawn,
minflok il-tab CS50 templates.

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U allura inti tista 'biss tmur
u toħloq spazju ta 'xogħol ġdid.

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>> Stajt diġà ħolqot workspace hawn.

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Allura aħna ser tkun qed taħdem ma 'dan.

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U jekk inti ħolqot ġdida
workspace dan bl-tab Custom,

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inti tista 'sempliċement tip gem jinstallaw
nokogiri, li mhux se hawnhekk.

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OK, huwa ftit iffriżat.

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00:02:06,230 --> 00:02:08,979
Iżda int tista tip gem tinstalla nokogiri.

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U li għandu jkun dak kollu li
hemm l-installazzjoni.

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>> Kif għidt qabel, jekk int xorta
jaħdmu fil-CS50 tiegħek template ID,

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inti biss jeħtieġ li tip CFLAGS
ugwali gem jinstallaw nokogiri.

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U stajt diġà installat
hawnhekk so I mhux se tagħmel dan.

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Iżda għal dawk li ġejja
flimkien, tħossok liberu li jagħmel hekk.

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>> Allura ladarba inti ħadthom ltqajna Nokogiri tiegħek
workspace jew il-librerija installat,

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Jien ser jagħtuk ftit
ta 'kors tiġrifa fil-sintassi Ruby

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minħabba Nokogiri hija librerija Ruby.

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Allura ikollok bzonn li tkun taf xi bażika
Sintassi Ruby għall-ħidma ma Nokogiri.

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Allura xi differenzi bażiċi
minn dak li qed jintużaw biex

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forsi jekk inti kont qed taħdem
s'issa fi ftit C u PHP,

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inti tiddikjara varjabbli bl-ebda tip.

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Inti ma jużawx semicolons,
li huwa tip ta 'eżenzjoni.

49
00:03:19,720 --> 00:03:25,480
M'hemm l-ebda parentesi issa madwar
favur jew waqt loops, per eżempju.

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Inti sempliċiment għandek blokk ta 'kodiċi, u
imbagħad inti tpoġġi tmiem fl-aħħar ta 'dak.

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M'hemm l-ebda plus plus
jew minus nieqes, hekk biss

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jafu li meta
int tagħmel għal-linji,

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biss ugwali plus u minus ugwali.

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U minflok ta 'hash jinkludu,
inti ser tuża bżonn u mbagħad

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ikun x'ikun librerija jippruvaw
tagħbija fil-programm tiegħek.

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>> Ruby ma tkunx lingwa ikkompilati.

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Allura dak eżenzjoni ieħor.

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Huwa aktar simili għal PHP fejn
huwa lingwa interpretati.

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Inti tista 'taħdem kwalunkwe iskrittura Ruby li
tikteb bil Ruby segwiti

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bl-isem ta iskrittura tiegħek jew programm.

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Li turi li huwa programm Ruby,
inti biss jispiċċaw bl .rb minflok .c.

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U hemm varjabbli
arrays daqs medju Ruby,

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li huwa super konvenjenti meta int
brix u forsi tixtieq li tehmeż

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data li inti stajt mibruxa fi array.

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Inti ma għandekx malloc firxa ġdida u
kopja tal-firxa antika fil-firxa ġdida.

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Tista 'biss tehmeż ma'
iż-żewġ sinjali vleġġa.

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U ma jkunx hemm Chars, hemm
biss kordi ittra waħda.

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Allura li għandu jkun ftit aktar faċli.

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>> Allura aħna ser biss jagħtuk xi
eżempji ta 'xi sintassi bażika Ruby.

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Allura hawnhekk tista 'tara li minflok
l mmejla mmejla, biex jikkummenta fil Ruby,

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inti biss tuża s-sinjal lira.

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U d-dikjarazzjoni varjabbli, inti
biss it-tip il-varjabbli ugwali

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xi trid il-varjabbli li jkun.

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00:05:07,971 --> 00:05:09,220
Dawn jistgħu jiġu kordi.

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Inti jista 'jkollhom firxa, li
inti timla ma 'valuri.

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tpoġġi u stampi huma simili.

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Għall-għanijiet tagħna, il-
unika differenza hija verament

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li tpoġġi, li stands għall
tpoġġi, biss tpoġġi linja ġdida

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karattru fuq kwalunkwe int istampar.

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>> Mela jekk aħna nagħtu żgħir
dimostrazzjoni hawn,

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nistgħu run dan with--
tiftaħ terminal ġdid.

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Tista 'tara kollha ta' dawn
fajls li huma terminal tiegħi.

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U jekk I biss run
Ruby, intro.rb ruby, huwa

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tpoġġi ħamsa Hello
Mather, Quincy, Carrier.

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Adams.

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Allura li kollox hemm
li arrays jiddikjaraw.

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UDJENZA: Robert, inti tista 'tagħmel
font tiegħek ftit akbar?

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ROBERT KRABEK: Iva.

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U nista 'zoom għaliex inti ma tistax
zoom in to fonts terminali apparentement.

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>> Allura li kif inti print
Varjabbli li terminal tiegħek.

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Tista 'wkoll tuża
varjabbli ġewwa string.

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Allura reċentement fil-PHP,
inti jista 'jkollok tgħallmu

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li hemm interpolazzjoni sekwenza.

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Mela jekk inti tagħti ħarsa hawn, jekk I
tiddikjara tliet fatturi varjabbli, isem, librerija,

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u lingwa, u I tpoġġi, I
jiktbu string, Hello, jiena.

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U allura minflok il-PHP
verżjoni ta 'interpolazzjoni string

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li jistenna ftit aktar bħal dan,
ikollok sinjal lira, u mbagħad

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Brace kaboċċi, u mbagħad
l-isem tal-varjabbli.

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U li kif youd print, jiġifieri,
ikun x'ikun l-isem varjabbli huwa.

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>> U allura inti tista 'ukoll
concatenate kordi.

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Ruby jagħmilha super
faċli bis-sinjal plus.

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Inti sempliċiment għandek string wieħed
fuq ix-xellug flimkien ma 'varjabbli

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jew string ieħor flimkien ma 'sekwenza.

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Mela jekk jien Stampa din out, għandu
biss jgħidu Hello, jien jisimni Robert.

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I se jkunu tagħlim inti nokogiri fil Ruby.

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>> U ejja biss jikkonfermaw li din
huwa tabilħaqq l-intro ruby ​​case--.

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Hello, jien jisimni Robert.

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I se jkunu tagħlim inti nokogiri fil Ruby.

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>> Nimxu fuq, jekk id-dikjarazzjonijiet inkella,
huwa ftit differenti

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minn dak li inti tista 'tintuża biex
jekk inti kont qed taħdem C.

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Inti ma għandekx bżonn l-parentesi.

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Inti ma għandekx bżonn l-braces kaboċċi.

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U minflok ta 'ieħor jekk,
huwa elsif concatenated.

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Allura fil hawn, jekk stajt iddikjarat x up
hawn, kif nistgħu naraw, x għadu 5.

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Mela jekk x huwa inqas minn 3, dan ser tpoġġi żgħar.

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Jekk huwa inqas minn 7, medju, inkella kbar.

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Allura 5 huwa numru medju.

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00:08:17,340 --> 00:08:22,270
U jien jintemm dan blokk ta 'kodiċi bi tmiem.

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>> Hawnhekk huwa tiegħi għal loop.

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U dan sintassi hija wkoll
kemmxejn differenti.

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0 sa ħamsa biss essenzjalment
huwa li tkun iddikjarat li arrays '0 sa 5.

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00:08:33,500 --> 00:08:36,120
Allura hemm ħames slots fl-array.

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U allura għal kull slot f'dak
firxa, I se jkun inkrementazzjoni i.

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Għalhekk dan għandu jistampa 0 sa 5, jew 0-4.

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U dan għandu jistampa medju.

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00:08:49,630 --> 00:08:51,370
>> U jien ser biss blaze permezz.

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00:08:51,370 --> 00:08:54,466
You guys se jkollhom aċċess
li dan il-kodiċi aktar tard.

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Allura inti guys tista 'taħdem din yourselves.

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>> Allura dan huwa loop tiegħek waqt bażiku.

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00:09:06,620 --> 00:09:12,230
Dan se jkun biss istampar j,
inkrementazzjoni sa l-1 sakemm aħna hit 5.

135
00:09:12,230 --> 00:09:18,320
>> Super malajr kors tiġrifa Ruby
dwar kif jiktbu funzjoni.

136
00:09:18,320 --> 00:09:24,460
Minflok, jgħidu, int fattorjali
numru, aħna biss għandhom def.

137
00:09:24,460 --> 00:09:28,450
U essenzjalment int
tiddefinixxi funzjoni hawn.

138
00:09:28,450 --> 00:09:30,600
Dan se jkun l-
isem tal-funzjoni,

139
00:09:30,600 --> 00:09:34,280
u dan huwa kwalunkwe varjabbli li inti
tixtieq li tgħaddi fil-funzjoni.

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00:09:34,280 --> 00:09:36,760
Inti jista 'jkollhom jekk noti fit.

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00:09:36,760 --> 00:09:38,030
Inti tista 'ritorn.

142
00:09:38,030 --> 00:09:42,620
F'dan il-każ, aħna qed
definizzjoni ta 'recursively

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00:09:42,620 --> 00:09:45,000
funzjoni fattorjali implimentati.

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00:09:45,000 --> 00:09:48,660
Allura aħna biss sejħa funzjonijiet
fil Ruby bħal dan.

145
00:09:48,660 --> 00:09:54,700
>> Mela jekk jien stajt definit dan, I
tista 'sejħa fattorjali, jgħaddu fi 3,

146
00:09:54,700 --> 00:09:59,700
u mbagħad 3 se jkun l-varjabbli numru
li nista 'nuża fil-funzjoni.

147
00:09:59,700 --> 00:10:08,010
U dan to_s huwa biss ddawwar l-
ritorn valur ta fattorjali fis-sekwenza.

148
00:10:08,010 --> 00:10:10,760
Inkella dan se tarmi
żball qal oh, I

149
00:10:10,760 --> 00:10:13,230
ma tistax tistampa string--
għaliex kif tiftakar,

150
00:10:13,230 --> 00:10:18,230
tpoġġi jitqiegħed string-- għaliex dan
fattorjali marret lura numru.

151
00:10:18,230 --> 00:10:21,850
Allura nistgħu jikkonvertu li
għal string bħal tali.

152
00:10:21,850 --> 00:10:27,856
U bil-maqlub, inti tista 'wkoll jikkonvertu
string għal numru sħiħ ma 'to_i.

153
00:10:27,856 --> 00:10:32,650
>> Allura tagħmel dak kollu super sempliċi,
jekk I biss jikkummenta dan out, ħlief

154
00:10:32,650 --> 00:10:36,250
u għaddi l-funzjoni fattorjali.

155
00:10:36,250 --> 00:10:39,850
Għandna nkunu kapaċi biex tara
li fattorjali ta '3 hija ta' 6.

156
00:10:39,850 --> 00:10:42,790
U li huwa tabilħaqq veru.

157
00:10:42,790 --> 00:10:46,160
>> Allura dak kors qasir u intensiv tiegħek fil Ruby.

158
00:10:46,160 --> 00:10:53,550
U issa li taf Ruby, nistgħu mmorru fuq
għall-Nokogiri bażiku brix stabbilit.

159
00:10:53,550 --> 00:10:58,190
Essenzjalment kull ma għandek tagħmel hu li,
fil Ruby, jeħtieġu l-libreriji.

160
00:10:58,190 --> 00:11:04,390
U għal skopijiet tagħna aħna ser tkun qed tuża l-
librerija OpenURI kif ukoll Nokogiri.

161
00:11:04,390 --> 00:11:07,870
U allura dak li do-- u inneħħu
jagħtuk l-sintassi għall this--

162
00:11:07,870 --> 00:11:16,010
huwa inti tiftaħ il-URL ħafna kif inti fil
talba curl, li stands għall C URL.

163
00:11:16,010 --> 00:11:20,330
>> Allura inti tieħu l-URL tal
il-websajt fil-kwistjoni.

164
00:11:20,330 --> 00:11:22,030
Inti jaħżnu varjabbli.

165
00:11:22,030 --> 00:11:27,400
U allura inti tista 'tfittex permezz ta' dak
varjabbli għall tags HTML uniku bl-użu

166
00:11:27,400 --> 00:11:30,590
il-kmand .css.

167
00:11:30,590 --> 00:11:34,360
U allura inti tista output l-
kontenut li kull fejn trid.

168
00:11:34,360 --> 00:11:35,720
Tista 'tibda fid-database.

169
00:11:35,720 --> 00:11:42,040
Inti tista output fil-fajl, jew
anki sempliċement jistampaw l-iskrin.

170
00:11:42,040 --> 00:11:47,290
>> Allura aħna ser nuruk barraxa bażiku.

171
00:11:47,290 --> 00:11:52,570
Allura up here tista 'tara għandna
jeħtieġu nokogiri, jeħtieġu open-URI.

172
00:11:52,570 --> 00:11:57,150
Sett bażiku tiegħek up, ejja
sejħa hija dokument jew doc,

173
00:11:57,150 --> 00:12:07,780
ugwali Nokogiri :: HTML miftuħ, li hija l-
kmand provduta lilna mill-OpenURI

174
00:12:07,780 --> 00:12:08,920
librerija.

175
00:12:08,920 --> 00:12:14,000
U aħna ser tkun tiftix, għal dawk ta '
inti li jistgħu jkunu jgħixu fl-quad,

176
00:12:14,000 --> 00:12:21,270
għall bikes li huma fil Boston elenkati
fuq it-taqsima bike Boston Craigslist

177
00:12:21,270 --> 00:12:22,020
sit.

178
00:12:22,020 --> 00:12:26,460
>> Mela jekk inti ma jkunux familjari
ma curl, I ser biss

179
00:12:26,460 --> 00:12:28,930
nuruk reali malajr dak curl se do.

180
00:12:28,930 --> 00:12:38,350
Jekk jien ridt li nikseb kollha tal-URL mill
is-sit Craigslist, jekk I tip curl,

181
00:12:38,350 --> 00:12:44,950
hija biss miżbliet kollha tal-URL
mis-sit roti Craigslist

182
00:12:44,950 --> 00:12:46,720
fuq terminal tiegħi.

183
00:12:46,720 --> 00:12:49,130
Li mhux partikolarment
utli għaliex I ma

184
00:12:49,130 --> 00:12:53,330
tixtieq li manwalment jgħaddu u
isibu l-ħaġa I infittex.

185
00:12:53,330 --> 00:13:01,590
Iżda biss sabiex inti tista '
tara li jien attwalment

186
00:13:01,590 --> 00:13:13,966
jużaw il-kodiċi lemin, jekk inti tħares
fil-URL għall Craigslist fil bikes--

187
00:13:13,966 --> 00:13:17,460
għal xi raġuni huwa ma nstabx.

188
00:13:17,460 --> 00:13:20,340
Jekk inti tħares lejn din il-paġna
u inti tħares lejn il-URL,

189
00:13:20,340 --> 00:13:23,970
dan għandu jkun identiku għall-
talba curl li jien biss tibgħat.

190
00:13:23,970 --> 00:13:27,700
U fil-fatt, dan huwa dak li qed
maħżuna fil-varjabbli dok.

191
00:13:27,700 --> 00:13:36,540
>> Allura meta inti tmur lura għall-kodiċi tagħna, aħna
jistgħu mbagħad joperaw fuq din il-varjabbli dok

192
00:13:36,540 --> 00:13:40,660
bl-użu .css.

193
00:13:40,660 --> 00:13:49,240
Allura ngħid jien ridt li nikseb kollha ta '
l-tags li huma span.txt,

194
00:13:49,240 --> 00:13:51,740
u l-tags ta 'ġewwa li tag.

195
00:13:51,740 --> 00:13:56,150
U għaliex tista irridu li
tagħmel dan, I tisma int cry?

196
00:13:56,150 --> 00:14:02,920
>> Jekk aħna Spezzjona Element, tagħtik
tqassim ta 'kif l-URL huwa strutturat.

197
00:14:02,920 --> 00:14:06,200
Jekk I iscroll isfel permezz
hawn, tista 'tara

198
00:14:06,200 --> 00:14:08,770
dak li kull wieħed minn dawn differenti
elementi jirrappreżenta.

199
00:14:08,770 --> 00:14:13,410
Hekk forsi I jridu aċċess
dan l-element partikolari.

200
00:14:13,410 --> 00:14:16,820
Hekk jien jużaw iżviluppatur Chrome
għodod għall Spezzjona Element.

201
00:14:16,820 --> 00:14:22,970
I jista 'jara stabbiliti hawn li din
hija tag fi ħdan medda

202
00:14:22,970 --> 00:14:26,230
tag bi klassi ta 'txt.

203
00:14:26,230 --> 00:14:29,610
>> Allura dan gets tagħna
ewwel operazzjoni li

204
00:14:29,610 --> 00:14:37,330
huwa span doc.css, li hija l-tikketta li
I infittex fi ħdan dan kollu URL.

205
00:14:37,330 --> 00:14:43,650
U mbagħad txt topera ħafna bħal CSS
ma meta int biss bil-miktub CSS

206
00:14:43,650 --> 00:14:49,630
fil-fajls HTML tiegħek billi
tispeċifika klassi.

207
00:14:49,630 --> 00:14:57,980
Allura dan l-operatur partikolari se
tispeċifika tag medda mal-klassi ta 'txt.

208
00:14:57,980 --> 00:15:02,800
U mbagħad jekk jien jħallu spazju,
dan imbagħad se jmorru f'dak tag

209
00:15:02,800 --> 00:15:05,170
u mbagħad isibu tag f'dak.

210
00:15:05,170 --> 00:15:10,750
>> Mela jekk jien biss jippreżentaw dan lill
il terminal, I għandu

211
00:15:10,750 --> 00:15:21,630
tkun tista 'tara essenzjalment kollox
li huwa fi ħdan il-medda tal-klassi txt.

212
00:15:21,630 --> 00:15:22,890
Allura aħna ser jagħtuk li go.

213
00:15:22,890 --> 00:15:25,870

214
00:15:25,870 --> 00:15:27,756
ruby craigslist-barraxa.

215
00:15:27,756 --> 00:15:31,850

216
00:15:31,850 --> 00:15:37,250
U fil-fatt li jagħtina dawn kollha
tags tal-listi varji li

217
00:15:37,250 --> 00:15:40,400
fuq il-paġna Craigslist.

218
00:15:40,400 --> 00:15:45,670
>> Mela jekk immorru lura, nistgħu jibdlu din
f'xi ħaġa ftit aktar utli.

219
00:15:45,670 --> 00:15:51,050
Forsi irridu biss il-links.

220
00:15:51,050 --> 00:15:58,790
Minħabba f'dan tag, I ser ukoll
għandhom il-hyperlink tal-passaġġ

221
00:15:58,790 --> 00:16:00,590
li din il-paġna tmur għall.

222
00:16:00,590 --> 00:16:09,100
Mela jekk inti tħares lejn dan il-kodiċi hawn,
dak I ser tagħmel hu minflok .css,

223
00:16:09,100 --> 00:16:12,380
I tista 'tmur at_css.

224
00:16:12,380 --> 00:16:16,820
U dan se biss jiksbu l-ewwel
element ta 'dawn l-affarijiet.

225
00:16:16,820 --> 00:16:20,890
Mela jekk jien kienu li tagħmel dan fil-
Kodiċi I biss murija minn qabel,

226
00:16:20,890 --> 00:16:23,800
minflok jirritornaw kollha
ta 'dan, ikun biss

227
00:16:23,800 --> 00:16:26,850
jirritorna l-ewwel wieħed minn dawn.

228
00:16:26,850 --> 00:16:31,310
Allura li kif l-operatur at_css xogħlijiet.

229
00:16:31,310 --> 00:16:39,460
>> Allura aħna tixtieq li taħżen l-
triq kollha ta 'l-ewwel tag.

230
00:16:39,460 --> 00:16:47,430
U għaliex se tagħtina a--
hekk aħna qed għadhom ser tuża .css.

231
00:16:47,430 --> 00:16:53,830
Iżda minħabba dan se jagħti
us back firxa sħiħa ta 'tikketti,

232
00:16:53,830 --> 00:16:55,710
nous allons aċċess
l-ewwel element.

233
00:16:55,710 --> 00:17:01,700
Allura dan huwa mod ieħor li inti tista
aċċess għal kull element partikolari jekk inti

234
00:17:01,700 --> 00:17:04,810
jkollhom firxa ta 'elementi
li huwa rritornat,

235
00:17:04,810 --> 00:17:11,930
għaliex inti jista 'jikkura xi ħaġa li
prospetti .css bħala firxa, essenzjalment.

236
00:17:11,930 --> 00:17:16,880
U allura aħna qed tmur biex jaċċessaw il-
attribut referenza Portugues ta 'dan.

237
00:17:16,880 --> 00:17:24,810
>> Mela jekk inti tagħti ħarsa, jekk
int stenna verament qrib hawn,

238
00:17:24,810 --> 00:17:28,270
jekk inti biss essenzjalment
tħares lejn il-bar URL,

239
00:17:28,270 --> 00:17:33,880
dan huwa t-triq li
int se tkun brix.

240
00:17:33,880 --> 00:17:41,565
Allura jekk aħna biss run dan mill-ġdid,
u kun żgur konna meħlusin.

241
00:17:41,565 --> 00:17:47,040

242
00:17:47,040 --> 00:17:48,300
Tista 'tiċċekkja fid-dar.

243
00:17:48,300 --> 00:17:51,430
Dan fil-fatt logħbiet up ma 'din ir-rabta.

244
00:17:51,430 --> 00:17:55,950
>> Allura għaliex tista irridu li jużaw dan?

245
00:17:55,950 --> 00:17:57,870
Jekk inti tixtieq li jinbarax
il-paġna u għandu

246
00:17:57,870 --> 00:18:00,270
paġna ta 'links bħal
Craigslist ma, inti

247
00:18:00,270 --> 00:18:03,210
tista 'tixtieq li tmur imbagħad
f'kull wieħed minn dawk ir-rabtiet

248
00:18:03,210 --> 00:18:05,120
u mbagħad jinbarax l
kontenut ta 'dak li

249
00:18:05,120 --> 00:18:08,520
huwa eżattament dak li aħna qed tmur biex tagħmel.

250
00:18:08,520 --> 00:18:11,660
>> Allura ladarba inti għandek passaġġ bħala
varjabbli, I m'għadhomx really

251
00:18:11,660 --> 00:18:13,200
kura dwar l-istampar out.

252
00:18:13,200 --> 00:18:15,420
I biss ħtieġa biex jaħżnuh bħala varjabbli.

253
00:18:15,420 --> 00:18:20,980
U allura nista 'aċċess ieħor
paġna bl-istess mod I aċċess

254
00:18:20,980 --> 00:18:22,260
doc fl-ewwel post.

255
00:18:22,260 --> 00:18:25,920
Ħlief bil-URL, aħna qed tmur
għall-użu ta 'interpolazzjoni string

256
00:18:25,920 --> 00:18:29,180
bħal I kien iddeskriva fil
Ruby aktar kmieni li tehmeż

257
00:18:29,180 --> 00:18:32,010
il-passaġġ għall-aħħar tal-għerq.

258
00:18:32,010 --> 00:18:38,970
>> Allura dak li dan se tagħmel hu
dan se jitqiegħdu fuq il-passaġġ

259
00:18:38,970 --> 00:18:42,360
li I mibruxa qabel
u mbagħad tibdel din

260
00:18:42,360 --> 00:18:49,580
fi punt ġdid, tkun xi tkun tixtieq
sejħa it-- first_listing, per eżempju.

261
00:18:49,580 --> 00:18:52,900
Imma jien ser jitilqu
fuq partita għal issa,

262
00:18:52,900 --> 00:18:55,420
għaliex dan huwa dak li jien jużaw hawn.

263
00:18:55,420 --> 00:19:02,900
>> Allura ngħid jien ridt li nikseb-deskrizzjoni
ta 'l-ewwel kollokament fl Craigslist.

264
00:19:02,900 --> 00:19:04,740
So I se jinżlu hawn.

265
00:19:04,740 --> 00:19:10,660
Nixtieq ikklikkja fuq Spezzjona Element
għal darb'oħra, għaliex dan huwa d-deskrizzjoni.

266
00:19:10,660 --> 00:19:14,350
I d jinżlu hawn u tara
jekk I tista 'ssib kif I jista

267
00:19:14,350 --> 00:19:16,530
jkunu kapaċi li jfittxu għal dan il-tikketta unika.

268
00:19:16,530 --> 00:19:19,530
U f'dan il-każ, hija għandha
ID, li twassalna

269
00:19:19,530 --> 00:19:26,810
li mod jmiss tagħna ta 'tiftix għal
tags, li huwa ma 'hashtag.

270
00:19:26,810 --> 00:19:30,670
>> Allura għal klassijiet, inti tista
uża l-operatur dot.

271
00:19:30,670 --> 00:19:38,610
Allura txt hija tispeċifika klassi ta 'txt,
billi l-hash jispeċifikax ID.

272
00:19:38,610 --> 00:19:43,720
Allura f'dan il-każ, l-tikketta hija
taqsima, u l-ID huwa postingbody.

273
00:19:43,720 --> 00:19:47,780
>> Allura dan imur u jsib
l first-- għaliex aħna qed

274
00:19:47,780 --> 00:19:51,200
użu at_css-- dan imur u
isib l-ewwel element li

275
00:19:51,200 --> 00:19:57,180
jitla 'ma' l-tikketta tat-taqsima
u l-ID tal postingbody.

276
00:19:57,180 --> 00:20:02,636
U allura inti tista 'aċċess l-element test
ta 'dak l-oġġett lura ma' .text.

277
00:20:02,636 --> 00:20:06,230
U allura aħna jista 'jaħżen
li fid-deskrizzjoni.

278
00:20:06,230 --> 00:20:09,370
>> Allura issa li għandna
Deskrizzjoni varjabbli,

279
00:20:09,370 --> 00:20:14,850
aħna jista 'jkun kapaċi li tagħmel, jiġifieri,
fajl I / O. So fajl I / O fl Ruby

280
00:20:14,850 --> 00:20:21,310
huwa simili ħafna għall-fajl I / O
fl C fejn aħna jiftaħ fajl.

281
00:20:21,310 --> 00:20:23,260
Nistgħu tikteb lilha.

282
00:20:23,260 --> 00:20:25,060
U allura aħna ser jagħlaq dan il-fajl.

283
00:20:25,060 --> 00:20:29,660
>> Allura hawnhekk, aħna qed biss jissemmew il
fajl, xi varjabbli arbitrarja.

284
00:20:29,660 --> 00:20:33,120
Nistgħu wkoll biss jitqiegħed dan hawn.

285
00:20:33,120 --> 00:20:39,630
Għandna varjabbli li aħna qed ħażna
il-fajl miftuħ mal File.open.

286
00:20:39,630 --> 00:20:46,370
U aħna qed miktub lill dan il-fajl,
hekk aħna miftuħa mal-operatur w.

287
00:20:46,370 --> 00:20:54,280
U allura aħna jitqiegħdu string fil-
jippreżenta ma l-operatur .puts.

288
00:20:54,280 --> 00:20:58,310
U allura aħna tpoġġi l-varjabbli li aħna
jridu jiktbu għall-fajl f'dak.

289
00:20:58,310 --> 00:21:00,200
U allura aħna biss mill-qrib il-fajl.

290
00:21:00,200 --> 00:21:04,000
>> Mela jekk immorru quddiem u run dan,
dan għandu jipproduċi dokument

291
00:21:04,000 --> 00:21:10,840
ma description.txt li se
jkollhom din id-deskrizzjoni fi ħdanu.

292
00:21:10,840 --> 00:21:14,015
Mela jekk I run it-- ebda.

293
00:21:14,015 --> 00:21:17,520

294
00:21:17,520 --> 00:21:23,330
Huwa magħmul fajl test bil-
wieħed jittama, l-istess ħaġa.

295
00:21:23,330 --> 00:21:25,850

296
00:21:25,850 --> 00:21:33,290
Allura hemm seta 'kien kollokament ġdid
li l-toħroġ filwaqt I kont qed jitkellem.

297
00:21:33,290 --> 00:21:36,580
U fil-fatt jidher qisu kien hemm.

298
00:21:36,580 --> 00:21:43,380
Mela jekk immorru għal dan bike klassika,
1962-1966, li jidher li jaqblu.

299
00:21:43,380 --> 00:21:45,620
U hemm inti tmur.

300
00:21:45,620 --> 00:21:51,250
>> Allura dak l-aktar bażika
funzjonalità ta 'brix.

301
00:21:51,250 --> 00:21:57,510
Jista 'jkollna minflok
biss bil-miktub lill dan il-fajl,

302
00:21:57,510 --> 00:21:59,930
nistgħu żid affarijiet għal firxa.

303
00:21:59,930 --> 00:22:03,770
Mela jekk jien niddikjara tliet matriċi,
titolu, prezz, u deskrizzjoni.

304
00:22:03,770 --> 00:22:06,310

305
00:22:06,310 --> 00:22:13,790
U aħna qed joperaw fuq l-oġġett dok issa.

306
00:22:13,790 --> 00:22:16,940
Aħna tista 'tmur permezz u
isibu kollha ta 'l span.txt.

307
00:22:16,940 --> 00:22:21,710
U ftakar, dan jirritorna firxa
tal-punti kollha li ssib.

308
00:22:21,710 --> 00:22:27,300
U mbagħad fl Ruby, inti tista 'biss tuża
.Kull li jtenni permezz ta 'kull oġġett

309
00:22:27,300 --> 00:22:28,410
mill-firxa.

310
00:22:28,410 --> 00:22:31,330
U allura għal kull oġġett,
Jien biss ser sejħa hija

311
00:22:31,330 --> 00:22:34,620
rabta, minħabba li l
essenzjalment dak li hu.

312
00:22:34,620 --> 00:22:46,830
>> Mela jekk nressaq kull link.css dot a.hdrlnk,
dan huwa attwalment għaddejjin mar-rabta

313
00:22:46,830 --> 00:22:58,280
u s-sejba fi ħdan din ir-rabta ieħor
Element HTML u l-klassi korrispondenti.

314
00:22:58,280 --> 00:23:04,990
Mela jekk irridu niftakru dak
din kienet, il-span.txt,

315
00:23:04,990 --> 00:23:13,160
inti tista see- let me biss jmorru lura
quick-- reali fi ħdan span.txt

316
00:23:13,160 --> 00:23:17,490
għandna ħafna ta 'klassijiet oħra.

317
00:23:17,490 --> 00:23:27,180
Allura ġewwa span.txt, aħna qed tfittex
għal tag bi hdrlnk klassi.

318
00:23:27,180 --> 00:23:29,890
So let me biss issib li
għalik guys reali malajr.

319
00:23:29,890 --> 00:23:37,390

320
00:23:37,390 --> 00:23:42,850
>> Allura tista 'tara hawn, dan huwa a tag
li fi ħdan il-medda ta 'klassi txt

321
00:23:42,850 --> 00:23:44,920
li għandha l-hdrlnk klassi.

322
00:23:44,920 --> 00:23:47,610
U dan huwa tabilħaqq dak
aħna qed tipprova tikseb.

323
00:23:47,610 --> 00:23:54,680
>> Allura aħna issa qed tipprova taħżen kollha
ta 'dawk ir-rabtiet ġewwa l-titolu.

324
00:23:54,680 --> 00:23:59,545
U allura aħna qed tmur biex jistampaw
barra kull wieħed minn dawk ir-rabtiet.

325
00:23:59,545 --> 00:24:00,360
Le, sorry.

326
00:24:00,360 --> 00:24:04,530
Aħna qed tmur biex jistampa
il-prezz ta 'kull wieħed minn dawn.

327
00:24:04,530 --> 00:24:09,350
Mela ejja jimxu dan verament
malajr u ara dak li tagħmel.

328
00:24:09,350 --> 00:24:14,680

329
00:24:14,680 --> 00:24:17,720
>> Allura dan biss bażikament marru
permezz kull wieħed mill-links

330
00:24:17,720 --> 00:24:27,310
imbagħad, għamilt aċċess għas-tikketta in kwistjoni,
u mbagħad miġbud 'il barra l-prezz.

331
00:24:27,310 --> 00:24:33,910
U ma li għaliex wara
inti għandek kollox fit-titolu,

332
00:24:33,910 --> 00:24:37,260
konna biss maħżuna it-titolu hemmhekk.

333
00:24:37,260 --> 00:24:40,180
Imxejna biss maħżuna l-link
fi ħdan it-titolu firxa.

334
00:24:40,180 --> 00:24:47,720
U f'dan għat-tħaddim loop,
fejn minflok tmur għall a.hdrlnk,

335
00:24:47,720 --> 00:24:50,490
aħna qed tfittex għal span.price.

336
00:24:50,490 --> 00:24:56,500
Mela jekk I tista 'biss verament malajr issib
il-prezz, jekk inti jispezzjona l-element,

337
00:24:56,500 --> 00:25:00,610
tkun taf tara li din hija span
mal-klassi ta 'prezz.

338
00:25:00,610 --> 00:25:04,670
U li essenzjalment dwar kemm
aħna qed jkollna l-prezz hemmhekk.

339
00:25:04,670 --> 00:25:10,040
>> Allura dak l-tassew
każ bażiku ta 'brix.

340
00:25:10,040 --> 00:25:13,550
Thats kif inti tikseb kollha
l-elementi fuq paġna

341
00:25:13,550 --> 00:25:16,510
li, jiġifieri, inti diġà taf il-URL tal.

342
00:25:16,510 --> 00:25:21,050
>> Mela jekk irridu jiksbu
ftit aktar fil-fond,

343
00:25:21,050 --> 00:25:23,950
nistgħu jinbarax paġni fi ħdan il-paġni.

344
00:25:23,950 --> 00:25:28,480
U għal dan l-eżempju, I ser
tkun outputting għall-fajl CSV.

345
00:25:28,480 --> 00:25:39,510
Hekk jien jeħtieġu CSV up here
minħabba Ruby ma, ġewwa fih innifsu,

346
00:25:39,510 --> 00:25:42,350
għandhom il-funzjonalità
għal ftit output CSV fajls.

347
00:25:42,350 --> 00:25:45,030
Allura dak super sempliċi.

348
00:25:45,030 --> 00:25:48,710
Let me biss jmorru għall-ieħor.

349
00:25:48,710 --> 00:25:51,640

350
00:25:51,640 --> 00:25:57,170
Aħna koperti fajl I / O. Allura dan
huwa simili għal kif huwa fl C.

351
00:25:57,170 --> 00:26:00,870
U qabel nimxu fuq Kimono,
I ser biss nuruk tassew mgħaġġla kif

352
00:26:00,870 --> 00:26:02,790
biex jinbarax siti fi ħdan sights.

353
00:26:02,790 --> 00:26:10,040
>> Allura aħna diġà tgħallmu kif
li tiddikjara arrays fil Ruby.

354
00:26:10,040 --> 00:26:13,280
Hekk jien biss li tiddikjara
mazz ta 'arrays arbitrarji

355
00:26:13,280 --> 00:26:16,310
li se nkun jaħżen id-data ġewwa.

356
00:26:16,310 --> 00:26:20,680
doc qed topera bl-istess mod
kif għamlet fil-fajl preċedenti.

357
00:26:20,680 --> 00:26:23,580
Aħna qed tmur fi, konstatazzjoni
kull wieħed mill-l span.txt.

358
00:26:23,580 --> 00:26:25,040
Aħna diġà jafu li.

359
00:26:25,040 --> 00:26:32,130
Dan huwa l-kontenitur li fih kull
rabta tkun kollha tal-dejta li rridu.

360
00:26:32,130 --> 00:26:40,800
>> Allura hawnhekk dak li aħna qed tagħmel huwa għal kull
rabta tal-klassi span txt, aħna qed tmur fil

361
00:26:40,800 --> 00:26:45,720
u aħna qed konstatazzjoni tal-tikketta,
konstatazzjoni tal-ewwel element ta 'dak.

362
00:26:45,720 --> 00:26:49,937
Ftakar, .css prospetti firxa,
sabiex inti tista 'mhux biss aċċess għaliha kif inhu.

363
00:26:49,937 --> 00:26:51,520
Aħna ser isibu l-ewwel element.

364
00:26:51,520 --> 00:26:56,430
Anki jekk huwa firxa ta 'wieħed
oġġett, inti għandek tuża dan sintassi,

365
00:26:56,430 --> 00:26:58,800
u mbagħad iġbed il-attribut href.

366
00:26:58,800 --> 00:27:01,800
>> Allura għamilna dan qabel.

367
00:27:01,800 --> 00:27:04,440
Għalhekk dan għandu tfittex familjari.

368
00:27:04,440 --> 00:27:14,330
U hekk issa għandna firxa
imsejħa mogħdijiet kollha ta 'links tagħna

369
00:27:14,330 --> 00:27:16,590
li aħna qed tmur jridu jużaw.

370
00:27:16,590 --> 00:27:21,350
Mela jekk ikollna dan firxa ta 'kull
tal-mogħdijiet li aħna tixtieq li tuża,

371
00:27:21,350 --> 00:27:26,840
aħna mbagħad jistgħu joħolqu oġġett għal kull
ta 'dawk il-paġni meta aħna miftuħa dik il-paġna.

372
00:27:26,840 --> 00:27:31,150
Allura kif aħna wkoll raw fuq
l-sintassi qabel, fejn

373
00:27:31,150 --> 00:27:37,450
tagħmel interpolazzjoni string mal-passaġġ
hawn, sabiex il-sintassi hija biss għall-passaġġ.

374
00:27:37,450 --> 00:27:41,450
U I jistgħu isem din
varjabbli kwalunkwe isem arbitrarja.

375
00:27:41,450 --> 00:27:43,070
>> Dan huwa l-waħda importanti.

376
00:27:43,070 --> 00:27:46,650
Dan huwa l-firxa li tkun taf
jkun aċċess kull element.

377
00:27:46,650 --> 00:27:52,400
Imma meta inti tgħidli għal passaġġ fil-mogħdijiet,
dan ifisser għal kull element fil-mogħdijiet,

378
00:27:52,400 --> 00:27:55,150
sejħa hija triq, u juża dak.

379
00:27:55,150 --> 00:27:59,266
Dan huwa essenzjalment simili meta inti
do a għal loop u tuża int i.

380
00:27:59,266 --> 00:28:04,000
Allura inti tista 'tittratta l-passaġġ bħala l-
varjabbli li l-inkrementazzjoni.

381
00:28:04,000 --> 00:28:07,820
>> U mbagħad għal kull wieħed minn dawn,
jmorru f'kull wieħed minn dawk ir-rabtiet.

382
00:28:07,820 --> 00:28:11,710
Għaliex aħna qed maħżuna fil-paġna partita,
hekk aħna qed ħolqien ta 'paġna ġdida kull darba

383
00:28:11,710 --> 00:28:13,330
aħna jkollhom aċċess għaliha.

384
00:28:13,330 --> 00:28:20,560
U mbagħad fi ħdan dik il-paġna l-ġdida, issib
span.postingtitletext, span.price,

385
00:28:20,560 --> 00:28:22,240
u mbagħad taqsima # postingbody.

386
00:28:22,240 --> 00:28:28,430
Aħna diġà koperti taqsima # postingbody
meta ħarisna lejn id-deskrizzjoni.

387
00:28:28,430 --> 00:28:34,890
>> Allura nistgħu tmur tara fil-post Craigslist,
jekk int biss tħares lejn it-titolu,

388
00:28:34,890 --> 00:28:38,810
tista 'tara up here,
postingtitletext span.

389
00:28:38,810 --> 00:28:41,390
U hu għalhekk li huwa hemmhekk.

390
00:28:41,390 --> 00:28:49,120
U allura l-prezz, inti tista
aċċess għaliha bil klassi ispan ta 'prezz.

391
00:28:49,120 --> 00:28:54,480
>> Allura aħna wkoll forsi tista
tixtieq li taħżen il-URL.

392
00:28:54,480 --> 00:28:58,580
Allura aħna ser biss run dan
għal darb'oħra, aħżen fil-firxa,

393
00:28:58,580 --> 00:29:01,150
għaliex jekk inti qed tfittex
fuq Craigslist, int

394
00:29:01,150 --> 00:29:05,290
probabbilment se jridu mod li, jekk
inti tara xi ħaġa li jinteressak,

395
00:29:05,290 --> 00:29:06,620
mur lura għal dak is-sit.

396
00:29:06,620 --> 00:29:10,480
Allura inti biss tixtieq li taħżen
il-URL għal referenzi fini.

397
00:29:10,480 --> 00:29:13,840

398
00:29:13,840 --> 00:29:19,630
>> Dan huwa biss essenzjalment
sintassi ieħor għall-għall loop.

399
00:29:19,630 --> 00:29:26,360
I jistgħu biss do paths.each minflok
ta 'għall-passaġġ fil-mogħdijiet b'indiċi.

400
00:29:26,360 --> 00:29:31,280
U dan sintassi hija Ruby for--
passaġġ huwa dak li għamilna up here,

401
00:29:31,280 --> 00:29:33,920
tiddikjara varjabbli għal kull oġġett.

402
00:29:33,920 --> 00:29:38,540
U indiċi iġib ruħu
l-i fis-C għal-linji.

403
00:29:38,540 --> 00:29:41,280
Allura inti tista 'żżomm rekord
ta 'dak l-indiċi huwa.

404
00:29:41,280 --> 00:29:45,200
>> Allura hawnhekk huwa biss
ħaġa ftit konvenjenti

405
00:29:45,200 --> 00:29:46,950
għal meta int taħdem l-barraxa.

406
00:29:46,950 --> 00:29:50,580
Jekk inti qed brix mijiet ta 'paġni,
biex tiżgura li mhuwiex mdendlin,

407
00:29:50,580 --> 00:29:53,320
se biss output,
Jien aċċess din il-paġna,

408
00:29:53,320 --> 00:29:55,960
u l-iżgurar li
huwa għadu għaddej.

409
00:29:55,960 --> 00:29:59,250
Iżda għall-għanijiet tagħna, għax
hemm mitt oġġetti,

410
00:29:59,250 --> 00:30:08,000
Jien ser aċċess biss tlieta minnhom
hekk li aħna ma jispiċċaw ta 'żmien hawn.

411
00:30:08,000 --> 00:30:13,040
>> Iżda qabel irridu jiksbu dan, jien biss
ser nuruk verament malajr,

412
00:30:13,040 --> 00:30:16,940
I se jkun outputting-titolu,
prezz, id-deskrizzjoni, u URL

413
00:30:16,940 --> 00:30:19,600
kull waħda mill-links li stajt mibruxa.

414
00:30:19,600 --> 00:30:23,720
U allura dan huwa biss il-
sintassi għall-librerija CSV.

415
00:30:23,720 --> 00:30:25,240
Inti tiftaħ CSV.

416
00:30:25,240 --> 00:30:27,070
Dan huwa dak li jien ser sejħa tiegħu.

417
00:30:27,070 --> 00:30:29,430
Iftaħ bl tikteb do.

418
00:30:29,430 --> 00:30:33,830
U mbagħad CSV se jkun il-fajl li
int inputjar kollox fis.

419
00:30:33,830 --> 00:30:37,800
Dan huwa biss kontroll sanità għall
me li tkun taf li huwa taħdem.

420
00:30:37,800 --> 00:30:41,240
U dan huwa kontroll sanità tiegħi
li tkun taf li huwa komplut.

421
00:30:41,240 --> 00:30:46,670
Hekk jien tqegħid titolu fi filliera fl
l-CSV, prezz, url, id-deskrizzjoni,

422
00:30:46,670 --> 00:30:49,420
kollha fil ringieli fil-CSV.

423
00:30:49,420 --> 00:30:53,410
>> Hekk jekk immorru u run
dan now-- u I biss

424
00:30:53,410 --> 00:31:04,710
kun żgur li stajt salvati it-- minflok
ta 'ftit outputting lill-terminal,

425
00:31:04,710 --> 00:31:09,750
għandu jkollna CSV
fajl li l-prodott.

426
00:31:09,750 --> 00:31:13,500
Allura hawn nistgħu naraw il-CSV
fajl li kien prodott.

427
00:31:13,500 --> 00:31:19,330
Dan huwa l-output tal-
zokk li jien biss dam.

428
00:31:19,330 --> 00:31:23,030
Kif tistgħu taraw hawn,
paġna 0, 1, 2, 3 aċċess.

429
00:31:23,030 --> 00:31:27,400
Dawn huma t-titoli,
prezzijiet, deskrizzjonijiet.

430
00:31:27,400 --> 00:31:31,710
U jekk inħarsu lejn din CSV
fajl li konna ġġenerat,

431
00:31:31,710 --> 00:31:35,700
tista 'tara tiegħu outputted hawn.

432
00:31:35,700 --> 00:31:40,350
Dan mhux Excel, dan mhuwiex
formattjati fir-ringieli u kolonni.

433
00:31:40,350 --> 00:31:45,140
Iżda int tista 'timmaġina kif
jista 'jkun formattjati.

434
00:31:45,140 --> 00:31:47,740
>> CSV stands għall Comma Separated Values.

435
00:31:47,740 --> 00:31:50,090
Allura tista 'timmaġina dan jista' jkun filliera.

436
00:31:50,090 --> 00:31:54,700
U kull comma kieku
jindikaw f'kolonna separata.

437
00:31:54,700 --> 00:32:00,010
Just kelma ta 'caution--
kultant int

438
00:32:00,010 --> 00:32:02,260
brix affarijiet bil-lott ta 'virgoli.

439
00:32:02,260 --> 00:32:05,100
Mela jekk inti qed outputting
li fajl CSV,

440
00:32:05,100 --> 00:32:10,340
dan jista 'jkun ma joħroġ il-
mod inti tista 'taħseb.

441
00:32:10,340 --> 00:32:16,770
>> Allura dak essenzjalment kollha
hemm brix bażiku HTML

442
00:32:16,770 --> 00:32:20,110
paġni Nokogiri.

443
00:32:20,110 --> 00:32:26,000
>> Allura l-internet benesseri
innovattiva billi għandha toħroġ

444
00:32:26,000 --> 00:32:33,220
ma 'ambjent aktar awtomatizzati u GUI
verżjoni, għalkemm inqas robusta

445
00:32:33,220 --> 00:32:35,540
verżjoni ta 'brix diversi websites.

446
00:32:35,540 --> 00:32:39,060
U għal skopijiet tagħna
I ser tkun turi

447
00:32:39,060 --> 00:32:42,920
estensjoni Chrome imsejjaħ Kimono.

448
00:32:42,920 --> 00:32:46,690
U kull ma għandek tagħmel huwa inti jinnaviga
għall-paġna li inti tixtieq li jinbarax.

449
00:32:46,690 --> 00:32:48,590
Tikklikkja fuq qasam ta 'interess.

450
00:32:48,590 --> 00:32:51,510
Inti jikkalibra l-oqsma,
minħabba li se awtomatikament

451
00:32:51,510 --> 00:32:54,360
jiskopru dak li jidhirlu
inti tixtieq li tkun brix,

452
00:32:54,360 --> 00:32:56,280
u mbagħad inti biss toħloq API.

453
00:32:56,280 --> 00:33:03,700
>> Hekk jekk konna biex juru fuq
Craigslist, attwalment ma tkunx taħdem.

454
00:33:03,700 --> 00:33:08,290
U dan huwa dak I kienet se lura għall
qal dwar dan mhux qed bħala robust.

455
00:33:08,290 --> 00:33:10,320
Hija għandha trouble ħolqien tal-API.

456
00:33:10,320 --> 00:33:13,400
Iżda bħala dimostrazzjoni
ta 'dak li ser tagħmel,

457
00:33:13,400 --> 00:33:17,460
jekk inti jinstallaw l-estensjoni Chrome,
kull ma għandek tagħmel huwa tikklikkja fuqha.

458
00:33:17,460 --> 00:33:21,750
Hija Kimonofies il-paġna, u mbagħad inti
ikklikkja fuq il-ħaġa inti tixtieq li iskrittura.

459
00:33:21,750 --> 00:33:24,480
>> Mela jekk jien kienu li ikklikkja fuq
li, ikun tenfasizza

460
00:33:24,480 --> 00:33:28,130
dak li jaħseb li nixtieq
tkun brix off dik il-paġna.

461
00:33:28,130 --> 00:33:33,660
Hekk forsi I call dan listings.

462
00:33:33,660 --> 00:33:36,430
Dan huwa kemm punti I għazilt.

463
00:33:36,430 --> 00:33:43,810
U nista 'biss tikkonferma jew li tiċħad xi
tal-listi oħra ssuġġeriti

464
00:33:43,810 --> 00:33:49,600
biex tiksbu biex iżżid ma '
dak li se jkun mibruxa.

465
00:33:49,600 --> 00:33:52,330
>> Allura issa nistgħu naraw hemm
mitt oġġetti magħżula.

466
00:33:52,330 --> 00:33:58,060
Jekk irrid għandhom kamp ieħor li I
wkoll jinbarax li huwa relatat ma 'dan,

467
00:33:58,060 --> 00:34:02,540
jgħidu Irrid li jinbarax l-prezz
kif ukoll, allura I jistgħu jagħmlu l-istess.

468
00:34:02,540 --> 00:34:06,190

469
00:34:06,190 --> 00:34:11,550
>> Allura hawnhekk dimostrazzjoni ta 'kif huwa
ħafna inqas robusta, għaliex issa huwa

470
00:34:11,550 --> 00:34:15,050
picking up-belt minflok
tal biss il-prezz li nixtieq.

471
00:34:15,050 --> 00:34:16,989
U issa huwa telgħet 200 affarijiet.

472
00:34:16,989 --> 00:34:19,880
Inti tista 'tmur lura u ħassar.

473
00:34:19,880 --> 00:34:21,449
Tista 'tipprova mill-ġdid.

474
00:34:21,449 --> 00:34:24,250
Imma l-ebda garanziji.

475
00:34:24,250 --> 00:34:29,909
Dan huwa kif taħdem din kultant.

476
00:34:29,909 --> 00:34:32,969
Kif qed taraw hawn, issa jgħid 96 up here.

477
00:34:32,969 --> 00:34:37,000
Huwa telgħet ħafna mill-links
li inti tixtieq li jinbarax, iżda mhux

478
00:34:37,000 --> 00:34:39,280
neċessarjament kollha kemm huma.

479
00:34:39,280 --> 00:34:43,909
>> Għodda oħra utli ta 'Kimono għalkemm
huwa inti tista 'tmur għall Features Avvanzata

480
00:34:43,909 --> 00:34:47,980
hawn, mur Avvanzata,
u se nuruk

481
00:34:47,980 --> 00:34:53,139
it-tqassim tal-unika
mod għall-aċċess tal-HTML

482
00:34:53,139 --> 00:34:54,909
tags li inti tixtieq li jinbarax.

483
00:34:54,909 --> 00:35:01,450
Allura għall-elenkar, jekk inti tħares lejn hawn,
jekk ikollok aċċess span p div jifirxu fuq,

484
00:35:01,450 --> 00:35:06,030
inti tista 'attwalment biss użu
dan fil-kodiċi Nokogiri tiegħek,

485
00:35:06,030 --> 00:35:10,780
fejn qabel kellna span.txt
għall-aċċess kull wieħed mill-listi.

486
00:35:10,780 --> 00:35:13,270
Jekk I biss jixtiequ-test
fi ħdan il-listi,

487
00:35:13,270 --> 00:35:18,950
I tista input ispazju div p
span ispazju ispazju span spazju a,

488
00:35:18,950 --> 00:35:21,570
u tilħaqx l-istess effett.

489
00:35:21,570 --> 00:35:26,320
U għal dawk minnkom li huma interessati
fl-użu espressjonijiet regolari,

490
00:35:26,320 --> 00:35:31,670
dan jiġri wkoll jagħtik l-regolari
espressjoni tip ta 'spag għall-input

491
00:35:31,670 --> 00:35:34,900
biex issib l-affarijiet
inti qed tipprova ssib.

492
00:35:34,900 --> 00:35:44,130
>> Allura hemm fattur ieħor jibred
ta 'Kimono fejn inti tista paginate,

493
00:35:44,130 --> 00:35:47,780
li mhux biss nista jinbarax
ir-riżultati ta din il-paġna,

494
00:35:47,780 --> 00:35:50,890
I tista 'tikklikkja fuq din ftit
buttuna hawn, numerazzjoni,

495
00:35:50,890 --> 00:35:55,580
jispeċifikaw il-buttuna li
jieħdu me għall-paġna li jmiss,

496
00:35:55,580 --> 00:35:59,500
u mbagħad se biss jafu li
jista jtenni għall-paġna li jmiss,

497
00:35:59,500 --> 00:36:04,120
u mbagħad jinbarax kollha the-- sakemm
kif huwa l-istess format tal course--

498
00:36:04,120 --> 00:36:06,110
zokk kollha ta 'dawk ir-rabtiet ukoll.

499
00:36:06,110 --> 00:36:15,230
>> Allura għaliex Kimono ma tridx
taħdem ma Craigslist, dak li aħna ghamilt

500
00:36:15,230 --> 00:36:19,790
huwa Stajt Kimonofied l Crimson Harvard.

501
00:36:19,790 --> 00:36:29,380
Stajt miġbud 'il barra xi wħud mill-tip ta'
top dehru artikli, jikkonfermaw hawn.

502
00:36:29,380 --> 00:36:33,090
Say dawn kollha.

503
00:36:33,090 --> 00:36:35,830
Stajt kkompilata din API
għalik qabel iż-żmien.

504
00:36:35,830 --> 00:36:38,990
Iżda altrimenti dak li inti tagħmel
huwa inti biss ikklikkja Magħmul.

505
00:36:38,990 --> 00:36:40,940
Daħħal id-dettalji API tiegħek.

506
00:36:40,940 --> 00:36:45,260
Tistabbilixxi li kemm
jitkaxkru awtomatizzat jew manwali.

507
00:36:45,260 --> 00:36:48,460
Allura inti tista 'taġġorna tiegħek
data kull 15 minuti,

508
00:36:48,460 --> 00:36:50,330
kull ġimgħa, kuljum, xi trid.

509
00:36:50,330 --> 00:36:51,160
Isem API tiegħek.

510
00:36:51,160 --> 00:36:52,790
Oħloq il-API.

511
00:36:52,790 --> 00:36:58,460
Għall-benefiċċju tiegħek, stajt ħolqot il
Crimson paġna API quddiem diġà.

512
00:36:58,460 --> 00:37:02,480
>> Allura inti biss toħloq
kont fuq Kimono, u

513
00:37:02,480 --> 00:37:06,240
se taħżen APIs kollha tiegħek għalik.

514
00:37:06,240 --> 00:37:10,330
Allura essenzjalment li kollox tiegħek
scrapes differenti separati.

515
00:37:10,330 --> 00:37:18,250
>> Mela jekk inħarsu hawn, dan huwa l-
links opinjonijiet li stajt miġbura.

516
00:37:18,250 --> 00:37:21,290
Dawn huma l-dehru
links li stajt miġbura.

517
00:37:21,290 --> 00:37:24,090
U dawn huma l-aktar taqra
links li stajt miġbura

518
00:37:24,090 --> 00:37:27,120
minn dan zokk API aktar riċenti.

519
00:37:27,120 --> 00:37:30,790
>> Mela jekk inti tista 'tara hawn,
dawn għandhom ikunu l dehru,

520
00:37:30,790 --> 00:37:34,130
dawn jistgħu jkunu l-opinjonijiet,
li f'dan l-eżempju,

521
00:37:34,130 --> 00:37:38,150
Stajt kkombinahom kollha
fi ġbir wieħed.

522
00:37:38,150 --> 00:37:42,780
Imma jekk inti biss play madwar miegħu
ftit, inti tista 'tinqasam it up

523
00:37:42,780 --> 00:37:45,090
u jaqsamha up madankollu
inti tixtieq li sakemm

524
00:37:45,090 --> 00:37:47,520
bħala l-ifformattjar hija kemmxejn differenti.

525
00:37:47,520 --> 00:37:51,320
>> Just biex play madwar ma 'dan, il-
jitkaxkru stabbilit, wieħed mill-aspetti negattivi

526
00:37:51,320 --> 00:37:58,120
huwa inti tista 'biss jitkaxkru up
25 paġni kull darba.

527
00:37:58,120 --> 00:38:00,430
Din kienet waħda mill-fatturi li jillimitaw.

528
00:38:00,430 --> 00:38:03,060
Iżda hawnhekk, jekk int tkun qed tissettja
li jitkaxkru manwali, din

529
00:38:03,060 --> 00:38:06,100
huwa kif inti tista 'tgħid dan
li taġġorna d-data tiegħek.

530
00:38:06,100 --> 00:38:11,010
U hawn inti tista 'tara l-istorja crawl tiegħek
ta 'dak kollu li inti stajt crawled.

531
00:38:11,010 --> 00:38:16,000
U inti guys tista 'tmur lura, jiffirmaw,
play madwar ma 'l-modi differenti

532
00:38:16,000 --> 00:38:20,340
li inti tista 'timmodifika u tuża data tiegħek.

533
00:38:20,340 --> 00:38:24,580
>> Kimono jistgħu jiġu stabbiliti biex
jinbarax links ġewwa links.

534
00:38:24,580 --> 00:38:29,700
U inti ser jagħmlu hekk billi l-ewwel
brix lista ta 'links,

535
00:38:29,700 --> 00:38:35,390
u mbagħad tuża dik API bħala
jaqbżu off point għal API ieħor

536
00:38:35,390 --> 00:38:36,710
li inti toħloq l-iskrittura.

537
00:38:36,710 --> 00:38:42,040
Imma dak li aktar ikkumplikat minn
dak li aħna qed tmur biex tikseb fis llum.

538
00:38:42,040 --> 00:38:44,270
>> Allura dak Kimono.

539
00:38:44,270 --> 00:38:46,980
Aħna ser nitkellmu dwar il-vantaġġi u
liżvantaġġi ta Nokogiri u Kimono.

540
00:38:46,980 --> 00:38:50,380
>> Nokogiri, huwa verament mgħaġġel.

541
00:38:50,380 --> 00:38:51,640
Huwa faċli biex tittestja.

542
00:38:51,640 --> 00:38:55,910
Tista 'biss tpoġġi xejn biex
console, faċli biex jiġi kkonfigurat.

543
00:38:55,910 --> 00:39:00,400
Inti tista 'tiddeċiedi eżattament dak
inti tixtieq li jinbarax u jaħżnu.

544
00:39:00,400 --> 00:39:02,060
M'hemm l-ebda limiti paġna.

545
00:39:02,060 --> 00:39:08,010
I attwalment użati biex jinbarax simili
1800 websajts iskejjel Afrika t'Isfel

546
00:39:08,010 --> 00:39:10,870
għal emails għal apprendistat li għamilt.

547
00:39:10,870 --> 00:39:16,060
>> Allura dak possibbli, għalkemm l-aħjar prattika
Ikun li jifred l-iskrittura.

548
00:39:16,060 --> 00:39:19,310
Għaliex jekk ma jaħdimx, allura
inti ma tikseb xejn.

549
00:39:19,310 --> 00:39:22,790
Imma jekk inti tagħmel mitt,
forsi 200 paġna fi żmien,

550
00:39:22,790 --> 00:39:27,840
imbagħad inti għandek xi ċans ta 'mill-inqas
jkollna biċċa biċċa, speċjalment

551
00:39:27,840 --> 00:39:30,280
jekk ikollok internet ħażina.

552
00:39:30,280 --> 00:39:32,720
>> Sfortunatament tista 'biss jinbarax HTML.

553
00:39:32,720 --> 00:39:35,190
Mela jekk għandek
pages-- dinamiku mgħobbi

554
00:39:35,190 --> 00:39:39,480
u jien ser nuruk eżempju
bħal Kayak fil-second--

555
00:39:39,480 --> 00:39:42,270
Nokogiri sfortunatament
ma tistax jinbarax dan.

556
00:39:42,270 --> 00:39:45,700
>> Iżda Kimono huwa wkoll faċli biex jintuża.

557
00:39:45,700 --> 00:39:48,330
Kif inti raw, huwa essenzjalment
punt u kklikkja.

558
00:39:48,330 --> 00:39:50,260
Hija tista 'jinbarax JavaScript.

559
00:39:50,260 --> 00:39:53,790
Sfortunatament, hemm massimu
li kemm paġni inti tista jinbarax.

560
00:39:53,790 --> 00:39:55,710
Xi kultant huwa ftit
diffiċli biex jiġi kkonfigurat.

561
00:39:55,710 --> 00:39:57,240
Hija gets konfuż.

562
00:39:57,240 --> 00:40:00,920
Iżda huwa definittivament
xi ħaġa li jikkunsidraw

563
00:40:00,920 --> 00:40:05,930
jekk int ma tipprova li jkollhom
jinbarax maintainable super robusta.

564
00:40:05,930 --> 00:40:09,010
Jekk inti biss tixtieq li tikseb
kollox off ta 'paġna malajr,

565
00:40:09,010 --> 00:40:10,970
allura Kimono huwa verament
għodda tajba għall-użu.

566
00:40:10,970 --> 00:40:16,490
U kif semmejt qabel, hemm
il-karatteristika avvanzati ta Kimono

567
00:40:16,490 --> 00:40:19,260
li turi kif għandek
aċċess għall-HTML uniku

568
00:40:19,260 --> 00:40:24,210
element, li huwa super utli anke
jekk inti qed jaħdmu fil Nokogiri.

569
00:40:24,210 --> 00:40:30,370
>> Allura jekk aħna tmur għall-sit Kayak, għal
eżempju, inti tista 'tara hemm is--

570
00:40:30,370 --> 00:40:31,750
jew forsi inti ma tistax tara.

571
00:40:31,750 --> 00:40:38,910
Imma jekk jien nuruk l-URL għall-Kayak,
Dan fil-fatt huwa biss is-sors URL.

572
00:40:38,910 --> 00:40:43,800
Dan huwa l-URL qabel li jkunu
modifikata bi kwalunkwe JavaScript skripts

573
00:40:43,800 --> 00:40:45,350
li jkunu għaddejjin.

574
00:40:45,350 --> 00:40:52,420
U li għaddej biex tfittex differenti
milli jispezzjonaw l-element.

575
00:40:52,420 --> 00:40:55,940
>> Mela jekk inti tmur permezz u inti
jaqblu l-Element Spezzjona

576
00:40:55,940 --> 00:41:00,340
kodiċi għall-kodiċi sors, huwa
fil-fatt se tkun differenti.

577
00:41:00,340 --> 00:41:05,640
U dan huwa essenzjalment għaliex Nokogiri
ma tistax jinbarax siti dinamiku mgħobbija.

578
00:41:05,640 --> 00:41:08,810
Minħabba Nokogiri hija
tobrox il-għajn URL,

579
00:41:08,810 --> 00:41:16,310
billi Kimono huwa attwalment
brix dak li int essenzjalment

580
00:41:16,310 --> 00:41:18,260
jaraw fil Agħżel Element.

581
00:41:18,260 --> 00:41:23,880
>> Mela jekk jien jgħaddu u I
jippruvaw u Kimonofy Kayak,

582
00:41:23,880 --> 00:41:26,600
I tista 'attwalment tmur permezz
u agħżel il-prezz.

583
00:41:26,600 --> 00:41:32,360
Huwa ftit diffiċli,
u f'dan il-każ, huwa

584
00:41:32,360 --> 00:41:36,600
effettivament jaraw dan il-prezz
kif differenti minn dawn.

585
00:41:36,600 --> 00:41:41,110
Allura billi inti tista configure-- jew
jekk dan ma kinux dinamiku mgħobbi,

586
00:41:41,110 --> 00:41:43,620
inti tista 'tikkonfigura Nokogiri
tikseb dawn kollha.

587
00:41:43,620 --> 00:41:48,230
>> Minħabba li l-ifformattjar hija ftit
differenti għal din il-lista

588
00:41:48,230 --> 00:41:51,280
kif huwa mqabbla mal-bqija
minnhom, u tista 'tara hawn

589
00:41:51,280 --> 00:41:54,830
Huwa fil-fatt marret u
il-prezzijiet kollha magħżula titjira.

590
00:41:54,830 --> 00:42:01,200
Forsi I trid tagħżel
ħin tat-titjira kif ukoll.

591
00:42:01,200 --> 00:42:04,700
UI tista 'tmur permezz u
tip ta 'kkonfigurat dan.

592
00:42:04,700 --> 00:42:06,950
Ma rridx dan.

593
00:42:06,950 --> 00:42:10,200
I biss trid ħin tat-titjira li jmiss.

594
00:42:10,200 --> 00:42:17,030
U mbagħad wara ftit ta 'dawn
jmorru permezz, jiġrilha l-istampa.

595
00:42:17,030 --> 00:42:19,080
Allura s Kimono pretty intelliġenti.

596
00:42:19,080 --> 00:42:21,900
Huwa biss mhux daqshekk b'saħħitha.

597
00:42:21,900 --> 00:42:26,710
>> Hemm xi oħra
alternattivi li tista 'tuża.

598
00:42:26,710 --> 00:42:31,600
U jien ser nuruk lilhom hawnhekk.

599
00:42:31,600 --> 00:42:35,790
Jekk inti huma aktar komdi fl
Python minflok Ruby forsi,

600
00:42:35,790 --> 00:42:39,290
hemm librerija
imsejħa Soppa Beautiful.

601
00:42:39,290 --> 00:42:40,430
Tista 'tuża dan.

602
00:42:40,430 --> 00:42:42,270
Dan huwa simili ħafna għal Nokogiri.

603
00:42:42,270 --> 00:42:44,620
Hija għandha ftit aktar karatteristiċi.

604
00:42:44,620 --> 00:42:52,160
Tista 'ssib tag HTML u
mbagħad jimxu up jew jiċċaqalqu lejn il-ġenb.

605
00:42:52,160 --> 00:42:54,690
>> Hemm PyQt.

606
00:42:54,690 --> 00:42:57,820
Dan jista 'effettivament jinbarax dinamiku
siti, għaliex dan huwa tip ta '

607
00:42:57,820 --> 00:43:02,540
huwa WebKit li pretends li jkun
a browser mingħajr ma attwalment hemm

608
00:43:02,540 --> 00:43:03,670
tkun browser.

609
00:43:03,670 --> 00:43:07,490
Għalhekk ikun tistenna għal kulħadd l-
JavaScript tagħbija ewwel, u mbagħad

610
00:43:07,490 --> 00:43:09,560
jmorru fi u jippruvaw u jinbarax-sit.

611
00:43:09,560 --> 00:43:13,560
>> Jekk inti tixtieq li twaħħal bil Ruby, inti
tista 'tmur livell wieħed up minn Nokogiri.

612
00:43:13,560 --> 00:43:17,650
Tista 'tuża Capybara ma
karta tat-tgeżwir Poltergeist.

613
00:43:17,650 --> 00:43:22,910
U dan jista 'attwalment
essenzjalment tagħmel l-istess ħaġa

614
00:43:22,910 --> 00:43:26,610
kif PyQt, li hija huwa WebKit.

615
00:43:26,610 --> 00:43:29,610
Hija tistenna l-
JavaScript biex tagħbija ewwel.

616
00:43:29,610 --> 00:43:33,340
Jekk inti fiddle madwar miegħu biżżejjed,
inti tista 'anki ġġibu ikklikkja fuq affarijiet.

617
00:43:33,340 --> 00:43:42,780
>> Mela jekk hemm rabta li
mhix href klassika fejn

618
00:43:42,780 --> 00:43:46,350
il-passaġġ huwa faċilment aċċessibbli, u
huwa xi ħaġa JavaScript li jiskopri

619
00:43:46,350 --> 00:43:49,490
ikklikkja, inti tista 'attwalment tagħmel dan.

620
00:43:49,490 --> 00:43:53,430
Il-librerija aktar popolari
biex jissimulaw utent

621
00:43:53,430 --> 00:43:56,390
huwa JavaScript, li huwa PhantomJS.

622
00:43:56,390 --> 00:44:01,010
Dan jista 'ovvjament jinbarax dinamiku
siti għaliex dan huwa essenzjalment

623
00:44:01,010 --> 00:44:04,270
feint jiġu Chrome
mingħajr l-user interface.

624
00:44:04,270 --> 00:44:09,970
>> U allura, ovvjament l-aktar
robusta, iżda iżgħar rata għażla,

625
00:44:09,970 --> 00:44:13,260
huwa awtomazzjoni Selenju browser.

626
00:44:13,260 --> 00:44:15,550
U sfortunatament,
int mhux se tkun

627
00:44:15,550 --> 00:44:19,770
kapaċi li jagħmlu dan fi żmien IDE CS50 tiegħek.

628
00:44:19,770 --> 00:44:24,140
Minħabba essenzjalment dak li
ma huwa boots up Chrome tiegħek,

629
00:44:24,140 --> 00:44:27,090
Firefox, ikun x'ikun browser
li inti tixtieq li tuża,

630
00:44:27,090 --> 00:44:32,570
u binarji forsi maws
moviment, tkun xi tkun inti tip,

631
00:44:32,570 --> 00:44:35,170
u hija biss tip ta '
automates dan il-proċess.

632
00:44:35,170 --> 00:44:42,070
Għalhekk ġie żviluppat bħala tip ta '
website għodda għat-testijiet awtomazzjoni.

633
00:44:42,070 --> 00:44:45,910
Iżda ħafna nies jużaw
Selenju biex jinbarax websajts

634
00:44:45,910 --> 00:44:49,990
li huma b'xi mod ieħor ikollu
Ħafna diffikultà brix

635
00:44:49,990 --> 00:44:53,700
uħud minn dawn l-oħra, għodod aktar mgħaġġel.

636
00:44:53,700 --> 00:44:57,530
>> Allura li kollox stajt ltqajna biex web brix.

637
00:44:57,530 --> 00:44:58,090
Ħu gost.

638
00:44:58,090 --> 00:45:01,762

639
00:45:01,762 --> 00:45:02,680
>> UDJENZA: Mistoqsija.

640
00:45:02,680 --> 00:45:04,016
>> ROBERT KRABEK: Iva.

641
00:45:04,016 --> 00:45:12,840
>> UDJENZA: Jeżisti mekkaniżmu biex issir hash
il-websajt sabiex inti tista bażikament

642
00:45:12,840 --> 00:45:14,207
jgħaddu minnha aktar tard.

643
00:45:14,207 --> 00:45:15,040
ROBERT KRABEK: Yeah.

644
00:45:15,040 --> 00:45:21,530
Allura aħna tpoġġi l-, fil tagħna
eżempju, għal tnejn minnhom,

645
00:45:21,530 --> 00:45:24,980
aħna tpoġġi l-websajt sħiħa fis dok.

646
00:45:24,980 --> 00:45:31,260
U għalhekk inti tista 'attwalment ħu l-
doc varjabbli u jiktbu għall-fajl.

647
00:45:31,260 --> 00:45:35,490
Mela jekk jien ridt li, stajt
jiktbu out bħala fajl HTML,

648
00:45:35,490 --> 00:45:39,280
u mbagħad minflok jużaw
OpenURI u talba curl,

649
00:45:39,280 --> 00:45:43,520
imbagħad I jistgħu biss jiftħu doc
HTML u mbagħad tfittxija għal dan.

650
00:45:43,520 --> 00:45:47,960
>> UDJENZA: Iżda tista jippreservaw
t-tip ta 'esperjenza online

651
00:45:47,960 --> 00:45:48,930
waqt li inti tagħmel offline.

652
00:45:48,930 --> 00:45:51,013
Pereżempju. meta int
li jtajru għal bosta sigħat,

653
00:45:51,013 --> 00:45:54,070
Irrid li bażikament arkivju
l-websajt sħiħa. [Inaudible]

654
00:45:54,070 --> 00:45:58,780
>> ROBERT KRABEK: Yeah, dan huwa exactly--
hekk litteralment dak li dan qed tagħmel

655
00:45:58,780 --> 00:46:03,010
huwa Hi tieħu kollox
li tkun fl dan il-URL.

656
00:46:03,010 --> 00:46:11,280
Allura jekk aħna dam curl, huwa
tieħu kollha ta 'dan HTML,

657
00:46:11,280 --> 00:46:14,590
u huwa maħżuna
ġewwa l-dok varjabbli.

658
00:46:14,590 --> 00:46:17,290
Hekk allura inti tista 'tagħmel dak kollu
inti tixtieq li tagħmel ma dok.

659
00:46:17,290 --> 00:46:18,575
Tista 'output li fajl.

660
00:46:18,575 --> 00:46:19,950
UDJENZA: Iżda mhuwiex marbut up.

661
00:46:19,950 --> 00:46:20,780
Mhuwiex dinamiku.

662
00:46:20,780 --> 00:46:22,770
Mhuwiex rikursivi, id-dritt?

663
00:46:22,770 --> 00:46:24,016
You see dak li jfisser I?

664
00:46:24,016 --> 00:46:28,359
Jien jippruvaw bażikament tip ta 'hash
l-websajt sħiħa fuq hard drive tiegħi

665
00:46:28,359 --> 00:46:31,150
I hekk li jista bażikament tagħmel dan
għal bosta sigħat mingħajr internet.

666
00:46:31,150 --> 00:46:32,025
>> ROBERT KRABEK: Dritt.

667
00:46:32,025 --> 00:46:37,140
Mela jekk jien had-- dan meta s-fajl tiegħi I / O?

668
00:46:37,140 --> 00:46:47,766
Allura dan huwa l-fajl I / O. Allura ngħid minflok
ta 'dan, I call dan craigslist.html.

669
00:46:47,766 --> 00:46:52,620

670
00:46:52,620 --> 00:46:53,940
I d miftuħa li sa.

671
00:46:53,940 --> 00:46:59,020
I d tpoġġi dok fih.

672
00:46:59,020 --> 00:47:00,470
I qrib il-fajl.

673
00:47:00,470 --> 00:47:05,410
U mbagħad biss minħabba l-IDE CS50
huwa fuq il-sħaba, li l-x'ikun.

674
00:47:05,410 --> 00:47:07,710
I tista 'tmur hawn.

675
00:47:07,710 --> 00:47:09,320
I tista 'tniżżel il-fajl.

676
00:47:09,320 --> 00:47:11,830
U allura dan ikun fuq hard drive tiegħi.

677
00:47:11,830 --> 00:47:13,930
Allura inti tista 'tagħmel dan il-mod.

678
00:47:13,930 --> 00:47:18,830
Jew jekk int fid-dar, ma jużawx l-
CS50 IDE, bħal Sublime jew xi ħaġa,

679
00:47:18,830 --> 00:47:21,900
dan huwa saħansitra aktar faċli, għaliex
din hija kollha disponibbli lokalment,

680
00:47:21,900 --> 00:47:23,020
mhux marbut mal-internet.

681
00:47:23,020 --> 00:47:24,720
>> UDJENZA: Nara.

682
00:47:24,720 --> 00:47:26,580
Dan huwa għal problema waħda partikolari.

683
00:47:26,580 --> 00:47:30,410
Inti tista 'tagħmel dan recursively sabiex inti
go diversi saffi tip fond ta 'ħaġa?

684
00:47:30,410 --> 00:47:33,801
>> ROBERT KRABEK: I tista 'tniżżel folders
kif ukoll, jekk dan huwa dak li qed titlob.

685
00:47:33,801 --> 00:47:34,426
UDJENZA: Yeah.

686
00:47:34,426 --> 00:47:39,890

687
00:47:39,890 --> 00:47:41,440
>> ROBERT KRABEK: Kessaħ.

688
00:47:41,440 --> 00:47:43,182