Koj ua li cas los ntawm phau ntawv txhais lus hauv C#?
Koj ua li cas los ntawm phau ntawv txhais lus hauv C#?

Video: Koj ua li cas los ntawm phau ntawv txhais lus hauv C#?

Video: Koj ua li cas los ntawm phau ntawv txhais lus hauv C#?
Video: Koj pom Los xyov koj pua paub 2024, Kaum ib hlis
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Siv ua ntej los yog rau lub voj rau rov hais dua nkag mus rau tag nrho cov ntsiab lus ntawm phau ntawv txhais lus . Cov phau ntawv txhais lus khaws cov key-value khub. Yog li koj tuaj yeem siv hom KeyValuePair lossis ib qho kev sib txawv ntawm qhov sib txawv hauv foreach rov raws li qhia hauv qab no. Siv rau lub voj nkag mus rau tag nrho cov ntsiab lus.

Tom qab ntawd, koj ua li cas los ntawm phau ntawv txhais lus?

Muaj ob txoj hauv kev iterating los ntawm ib Python phau ntawv txhais lus khoom. Ib qho yog txhawm rau nqa tus nqi cuam tshuam rau txhua tus yuam sij hauv keys() daim ntawv teev npe. Tseem muaj cov khoom () txoj kev ntawm phau ntawv txhais lus khoom uas xa rov qab cov npe ntawm tuples, txhua tuple muaj qhov tseem ceeb thiab tus nqi.

Ib tug kuj yuav nug, dab tsi yog tus nqi tseem ceeb hauv C #? KeyValuePair hauv C# CsharpProgrammingServer Side Programming. Cov KeyValuePair chav kawm khw a khub ntawm tus nqi nyob rau hauv ib daim ntawv nrog C# . Teeb KeyValuePair thiab ntxiv cov ntsiab lus − var myList = New List< KeyValuePair > (); // ntxiv cov ntsiab lus myList.

Ib sab saum toj no, phau ntawv txhais lus puas tuaj yeem muaj cov yuam sij C#?

Hauv Phau ntawv txhais lus , cov tus yuam sij tsis tuaj yeem yog null, tab sis tus nqi ua tau ua. Hauv Phau ntawv txhais lus , tus yuam sij yuav tsum yog tshwj xeeb. Luam cov yuam sij tsis pub yog koj sim siv yuam sij dua ces compiler yuav pov ib qho kev zam. Hauv Phau ntawv txhais lus , koj ua tau tsuas khaws tib hom ntsiab.

Foreach Loop ua haujlwm li cas hauv C#?

Cov foreach rov hauv C# executes ib qho thaiv ntawm cov cai ntawm txhua lub hauv paus hauv ib qho array lossis cov khoom sau. Thaum ua tiav foreach rov nws traversing khoom nyob rau hauv ib tug sau los yog ib tug array. Cov saum toj no C# piv txwv thawj zaug tshaj tawm ib txoj hlua array 'hnub' thiab pib cov hnub hauv ib lub lis piam rau cov array ntawd.

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