Video: Qhov txawv ntawm chav kawm thiab struct yog dab tsi?
2024 Tus sau: Lynn Donovan | [email protected]. Kawg hloov kho: 2023-12-15 23:47
Qhov txawv ntawm Cov Qauv thiab Cov chav kawm : Cov qauv yog hom nqi whereas Cov chav kawm yog referencetype. Cov qauv yog khaws cia rau ntawm pawg whereas Cov chav kawm muab khaws cia rau hauv lub heap. Thaum koj luam qauv rau hauv lwm tus qauv , ib daim ntawv tshiab ntawm qhov ntawd qauv tau tsim kho ntawm ib qho qauv yuav tsis cuam tshuam tus nqi ntawm lwm tus qauv.
Kuj kom paub yog, qhov sib txawv ntawm cov qauv thiab chav kawm hauv Swift yog dab tsi?
Hauv Swift , structs yog hom nqi whereas chav kawm yog hom siv. Thaum koj luam a qauv , koj xaus nrog ob cim luam ntawm cov ntaub ntawv. Thaum koj luam a chav kawm , koj xaus nrog ob qhov kev xa mus rau ib qho piv txwv ntawm cov ntaub ntawv. Nws yog ib qho tseem ceeb heev txawv , thiab nws cuam tshuam rau koj xaiv nruab nrab ntawm cov chav kawm los yog structs.
Ib yam li ntawd, qhov sib txawv ntawm cov qauv thiab cov chav kawm nyob rau hauv cov nqe lus ntawm kev nkag mus hloov pauv yog dab tsi? Qhov sib txawv ntawm struct thiab chav kawm nyob rau hauv cov nqe lus ntawm Access Modifier . Qhov no ua rau cov qauv hauv C++ thiab chav kawm kom zoo ib yam. Lub xwb sib txawv ntawm ib C++ qauv thiab a chav kawm yog tias, bydefault tag nrho cov qauv cov tswv cuab yog pej xeem thaum los ntawm lub neej ntawd chav kawm cov tswv cuab yog tus kheej.
Ib yam li ntawd, nws tau nug, qhov txawv ntawm cov ntsiab lus struct thiab chav kawm hauv C ++ yog dab tsi?
Cov qhov sib txawv ntawm struct thiab class keywords hauv C++ yog tias, thaum tsis muaj qhov tshwj xeeb tshwj xeeb ntawm cov ntaub ntawv sib xyaw ua ke ces los ntawm lub neej ntawd qauv orunion yog pej xeem lo lus tseem ceeb uas tsuas yog txiav txim siab datahiding tab sis chav kawm yog tus kheej lo lus tseem ceeb uas xav txog qhov zais ntawm program codes los yog cov ntaub ntawv.
Dab tsi yog raws tu qauv hauv Swift?
A raws tu qauv txhais ib daim qauv ntawm txoj kev, cov khoom, thiab lwm yam uas haum rau ib tug tshwj xeeb txoj hauj lwm orpiece ntawm functionality. Cov raws tu qauv Tom qab ntawd tuaj yeem tau txais los ntawm chav kawm, qauv, lossis kev suav sau los muab kev ua tiav ntawm cov kev xav tau.
Pom zoo:
Dab tsi yog qhov txawv ntawm chav kawm sab hauv thiab cov chav nested?
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