Dab tsi yog @synthesize lub hom phiaj c?

2024 Tus sau: Fiona Howard | [email protected]. Kawg hloov kho: 2024-01-10 06:38

@synthesize creates a getter and a setter for the variable Qhov no cia koj qhia qee tus cwj pwm rau koj qhov sib txawv thiab thaum koj @synthesize cov cuab yeej rau qhov sib txawv koj tsim tus getter thiab setter rau qhov sib txawv. Cov cuab yeej lub npe tuaj yeem yog tib yam li lub npe sib txawv.

Dynamic in Objective-C yog dab tsi?

@objc txhais tau tias koj xav kom koj tus lej Swift (chav kawm, qauv, khoom ntiag tug, thiab lwm yam) kom pom los ntawm Objective-C. dynamic txhais tau tias koj xav siv Lub Hom Phiaj-C dynamic xa tawm.

Dab tsi yog @synthesize hauv Swift?

Synthesized/auto-synthesized properties in Objective C -- cov no hu ua " stored properties" in Swift. Koj tsuas tshaj tawm nws nrog var topSpeed : Ob npaug los yog cia topSpeed : Ob npaug=4.2 hauv kev tshaj tawm hauv chav kawm, raws nraim li koj yuav tshaj tawm ib qho kev sib txawv hauv zos hauv lub cev ua haujlwm.

Qhov piv txwv sib txawv Objective-C yog dab tsi?

Ib qho piv txwv yog qhov sib txawv uas muaj thiab tuav nws tus nqi rau lub neej ntawm cov khoom. Lub cim xeeb siv piv txwv cov hloov pauv tau faib thaum qhov khoom tau tsim thawj zaug (los ntawm alloc), thiab tso tawm thaum cov khoom sib pauv.

Dab tsi yog cov cuab yeej hauv Objective-C?

Cov khoom hauv Lub Hom Phiaj-C yog siv los khaws cov ntaub ntawv hauv cov chav kawmLawv txhais cov kev tswj hwm kev nco, hom, thiab nkag mus rau cov yam ntxwv ntawm qhov tseem ceeb uas lawv khaws xws li muaj zog, tsis muaj zog, assign, readonly, readwrite, etc. … muaj zog, qaug zog, muab cov cuab yeej cuab tam txhais li cas nco rau cov cuab yeej yuav raug tswj.