Video: Dab tsi yog chav kawm dav dav hauv C #?
2024 Tus sau: Lynn Donovan | [email protected]. Kawg hloov kho: 2023-12-15 23:47
Ntau yog a chav kawm uas tso cai rau tus neeg siv los txhais chav kawm thiab cov txheej txheem nrog rau qhov chaw. Ntau yam tau ntxiv rau version 2.0 ntawm C# lus. Lub tswv yim yooj yim tom qab siv Ntau yog tso cai hom (Integer, String, … thiab lwm yam thiab cov neeg siv txhais hom ) los ua ib qho parameter rau txoj kev, chav kawm , thiab interfaces.
Ib yam li ntawd, dab tsi yog chav kawm dav dav hauv C # nrog piv txwv?
Ntau yam cia koj txhais a chav kawm nrog placeholder rau hom ntawm nws cov teb, txoj kev, tsis, thiab lwm yam. Ntau yam hloov cov chaw tuav nrog qee yam tshwj xeeb ntawm lub sijhawm sau. A chav kawm dav dav tuaj yeem txhais tau siv lub kaum sab xis.
Qhov thib ob, cov chav kawm generic yog dab tsi? Cov chav kawm dav dav yog chav kawm uas coj ib hom raws li ib tug parameter. Lawv muaj txiaj ntsig tshwj xeeb rau kev sau chav kawm.
Ib yam li ntawd, nws raug nug, dab tsi yog txoj hauv kev hauv C#?
A txoj kev generic yog a txoj kev uas tau tshaj tawm nrog hom tsis muaj, raws li hauv qab no: C# Luam. static void Swap(ref T lhs, ref T rhs) { T temp; temp = lhs; lhs = rhs; rhs = temp; } Cov piv txwv hauv qab no qhia ib txoj hauv kev hu rau txoj kev los ntawm kev siv int rau hom kev sib cav: C# Luam.
Dab tsi yog qhov txawv ntawm kev sau thiab generics hauv C #?
Luv luv, qhov yooj yim qhov sib txawv ntawm generic thiab tsis- generic collections : - Generic collections - Cov no yog cov kev sau uas tuaj yeem tuav cov ntaub ntawv tib yam thiab peb tuaj yeem txiav txim siab seb hom ntaub ntawv twg kev sau tau tuav. Qee qhov zoo ntawm generic collections - Hom kev nyab xeeb, ruaj ntseg, txo nyiaj siv ua haujlwm ntawm hom kev hloov pauv.
Pom zoo:
Dab tsi yog qhov txawv ntawm chav kawm sab hauv thiab cov chav nested?
Cov chav kawm uas tau tshaj tawm yam tsis siv qhov zoo li qub yog hu ua chav kawm sab hauv lossis chav kawm tsis zoo li qub. Cov chav kawm Staticnested yog chav kawm zoo li lwm cov tswv cuab zoo li qub ntawm cov chav kawm sab nrauv. Txawm li cas los xij, cov chav kawm sab hauv yog khi toinstance thiab nws tuaj yeem nkag mus rau cov tswv cuab ntawm pawg enclosingclass
Dab tsi yog ob chav kawm tshwj xeeb hauv hierarchy ntawm Java zam chav kawm?
Chav Kawm Exception muaj ob lub ntsiab subclasses: IOException class thiab RuntimeException Class. Hauv qab no yog cov npe ntawm feem ntau kuaj xyuas thiab tsis tau txheeb xyuas Java's Built-in Exceptions
Peb puas tuaj yeem muaj ntau chav kawm pej xeem hauv chav kawm hauv Java?
Yog, nws ua tau. Txawm li cas los xij, muaj peev xwm tsuas yog ib pawg pej xeem ib. java cov ntaub ntawv, raws li publicclasses yuav tsum muaj tib lub npe raws li cov ntaub ntawv qhov chaw. OneJava cov ntaub ntawv tuaj yeem muaj ntau chav kawm nrog kev txwv uas tsuas yog ib qho ntawm lawv tuaj yeem ua pej xeem
Chav kawm piav qhia txog tus qauv ntawm chav kawm yog dab tsi?
Nyob rau hauv object-oriented programming, ib chav kawm yog ib tug template txhais ntawm txoj kev s thiab txawv txawv s nyob rau hauv ib tug tej yam khoom. Yog li, ib yam khoom yog ib qho piv txwv tshwj xeeb ntawm chav kawm; nws muaj cov txiaj ntsig tiag tiag tsis yog hloov pauv. Cov qauv ntawm ib chav kawm thiab nws cov subclasses yog hu ua chav kawm hierarchy
Dab tsi yog qhov tseem ceeb ntawm IT Essentials chav kawm muaj nyob hauv Cisco Academy cov ntaub ntawv kawm?
Dab tsi yog qhov tseem ceeb ntawm IT Essentials chav kawm muaj nyob hauv Cisco Academy cov ntaub ntawv kawm? Nws qhia cov neeg kawm paub txog cov hauv paus ntawm lub computer hardware thiab software. Lub zej zog IT twg yog kev sau cov peev txheej tsim los rau cov tib neeg uas xav tsim kev txawj ntse thiab ua raws li Cisco ntawv pov thawj?