1
00:00:00,000 --> 00:00:00,360

2
00:00:00,360 --> 00:00:02,390
>> SPIKA 1: Ni zamu nje ya mpango huu,
short ingawa ni,

3
00:00:02,390 --> 00:00:03,770
kweli ina mdudu.

4
00:00:03,770 --> 00:00:08,060
Katika hali nadra, GetString, kwa
nyaraka yake mwenyewe, anaweza kurudi

5
00:00:08,060 --> 00:00:09,390
kitu kingine zaidi ya kamba.

6
00:00:09,390 --> 00:00:12,700
Hasa, mwangalizi, maalum
thamani aitwaye null -

7
00:00:12,700 --> 00:00:14,080
N-U-L-L.

8
00:00:14,080 --> 00:00:17,350
>> Batili kunaashiria kwamba kwa ujumla, kitu
potoka ambapo katika hii

9
00:00:17,350 --> 00:00:20,340
kesi, mtumiaji anaweza kuwa typed katika vile
kamba kubwa kwamba hiyo haiwezi kufaa

10
00:00:20,340 --> 00:00:23,610
katika kumbukumbu, na hivyo GetString nguvu
kurudi null katika kesi hiyo.

11
00:00:23,610 --> 00:00:26,650
>> Au inaweza kuwa kwamba mtumiaji kwa namna fulani
hakuwa aina kamba yoyote wakati wote, katika

12
00:00:26,650 --> 00:00:28,570
kesi ambayo hakuna kamba wanaweza kuja nyuma.

13
00:00:28,570 --> 00:00:31,200
Hivyo ni bora kuwa sisi kuchunguza
kama au si null ina

14
00:00:31,200 --> 00:00:33,200
wamekuwa akarudi kama ifuatavyo -

15
00:00:33,200 --> 00:00:40,270
Tu kama S haina sawa null lazima
Mimi kuendelea kutekeleza kitanzi hii.

16
00:00:40,270 --> 00:00:43,520
>> Kwa maneno mengine, kama GetString hutokea
kurudi null, mimi si kwenda

17
00:00:43,520 --> 00:00:46,880
ajali kujaribu iterating juu ya
wahusika kuwa tu si huko.

18
00:00:46,880 --> 00:00:49,597