Swift Protocol yog dab tsi?
Swift Protocol yog dab tsi?

Video: Swift Protocol yog dab tsi?

Video: Swift Protocol yog dab tsi?
Video: Tus kab mob COVID-19 yog dab tsi? (What is COVID-19)? 2024, Kaum ib hlis
Anonim

Cov txheej txheem . A raws tu qauv txhais ib daim qauv ntawm txoj kev, cov khoom, thiab lwm yam kev xav tau uas haum rau ib qho haujlwm tshwj xeeb lossis cov haujlwm ua haujlwm. Cov raws tu qauv Tom qab ntawd tuaj yeem raug coj los ntawm chav kawm, qauv, lossis kev suav sau los muab kev ua tiav ntawm cov kev xav tau.

Ntxiv mus, koj ua li cas lub npe swift raws tu qauv?

Cov txheej txheem uas piav txog dab tsi yog yuav tsum tau nyeem raws li lub npe (piv txwv li sau). Cov txheej txheem uas piav txog lub peev xwm yuav tsum muaj npe siv cov lus sau ua tau, ible, lossis ing (piv txwv li Equatable, ProgressReporting). Cov npe ntawm lwm yam, khoom, variables, thiab tas li yuav tsum nyeem raws li nouns.

Tom qab ntawd, lo lus nug yog, dab tsi yog tus sawv cev nrawm? Kev ua cov neeg sawv cev hauv Swift , ib kauj ruam ntawm kauj ruam. Cov neeg sawv cev yog cov qauv tsim uas tso cai rau ib qho khoom xa xov mus rau lwm yam khoom thaum muaj xwm txheej tshwj xeeb tshwm sim. Xav txog tej yam khoom A hu ib yam khoom B los ua ib qho kev ua.

Khaws qhov no hauv kev txiav txim siab, dab tsi yog iOS raws tu qauv?

Los ntawm txhais a raws tu qauv qhia meej cov txheej txheem uas tuaj yeem siv los ntawm txhua chav kawm rau ib qho iOS no app. Cov txheej txheem yog siv los txhais cov interfaces uas yog siv los ntawm cov chav kawm. Cov txheej txheem feem ntau yog siv los qhia qhov interface rau delegate khoom.

Vim li cas swift raws tu qauv taw qhia?

Cov txheej txheem tso cai rau koj los ua pawg zoo sib xws, kev ua haujlwm thiab cov khoom. Swift cia koj hais kom meej cov interface guarantees ntawm chav kawm, struct thiab enum hom. Tsuas yog hom chav kawm tuaj yeem siv cov chav kawm hauv paus thiab qub txeeg qub teg.

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