Video: Subtyping hauv OOP yog dab tsi?
2024 Tus sau: Lynn Donovan | [email protected]. Kawg hloov kho: 2023-12-15 23:47
Subtyping yog ib feem tseem ceeb ntawm OOP - koj muaj ib yam khoom ntawm ib hom tab sis uas ua kom tiav qhov interface ntawm lwm hom, yog li nws tuaj yeem siv nyob qhov twg lwm yam khoom siv tau.
Hais txog qhov no, dab tsi yog subtyping hauv C ++?
C++ muab qhov mechanism thiab hu subclasses "derived classes". subtyping hais txog qhov muaj peev xwm siv qhov tseem ceeb ntawm cov subtype nyob rau hauv qhov chaw uas yuav tsum muaj nuj nqis ntawm hom.
Tsis tas li ntawd, qhov txawv ntawm subclass thiab subtype yog dab tsi? A subclass ib txwm nws tus kheej yog chav kawm. Subtype yog ib lo lus dav dav dua, thiab peb tuaj yeem hais tias ib hom yog a subtype ntawm lwm hom, yam tsis tau hais dab tsi txog lawv yog dab tsi (chav kawm, interface thiab lwm yam).
Hais txog qhov no, dab tsi yog subtyping hauv Java?
Subtyping tsuas yog txhais tau hais tias kev ua haujlwm ntawm supertype tuaj yeem ua tiav ntawm subtype . hauv Java , interfaces sawv cev rau cov qauv piav qhia txog tus cwj pwm dab tsi uas ib hom tuaj yeem nthuav tawm, uas ua rau nws lub cev sawv cev rau subtyping . Subclassing yog manifested nyob rau hauv lub chav kawm hierarchy.
Puas yog tag nrho cov subtypes subclasses?
Muaj qhov sib txawv tseem ceeb ntawm subtypes thiab subclass hauv kev txhawb nqa rov siv dua. Subclasses tso cai rau ib tug rov siv cov cai hauv cov chav kawm - ob qho tib si cov lus tshaj tawm sib txawv thiab cov lus txhais. Ceeb toom tias cov subtype Kev sib raug zoo tsuas yog nyob ntawm pej xeem cuam tshuam ntawm cov khoom, tsis yog lawv cov kev siv.
Pom zoo:
Dab tsi yog txoj hauv kev virtual thiab txoj hauv lub cev hauv asp net?
Ua ntej tshaj, cia peb tau txais cov ntsiab lus ntawm ob qho tib si. Txoj kev lub cev - Qhov no yog txoj hauv kev tiag tiag cov ntaub ntawv nyob ntawm IIS. Txoj kev Virtual - Qhov no yog txoj hauv kev kom nkag mus rau cov ntaub ntawv uas tau taw qhia los ntawm sab nraud ntawm IIS daim ntawv thov folder
Txoj kev overloading hauv OOP yog dab tsi?
Cov txheej txheem overloading. Lub ntsiab lus tseem ceeb hauv OOPis cov txheej txheem overloading, uas tso cai rau koj txhais cov txheej txheem tib lub sijhawm kom koj tuaj yeem hu rau lawv nrog cov npe sib cav sib ceg (ib hom kev sib cav npe hu ua nws kos npe). Koj tuaj yeem hu rau Cheeb Tsam nrog ib lossis ob qhov kev sib cav
Dab tsi yog qhov sib xyaw hauv OOP nrog piv txwv?
Kev sib xyaw yog ib qho ntawm cov ntsiab lus tseem ceeb hauv cov phiaj xwm kev taw qhia. Nws piav txog ib chav kawm uas hais txog ib lossis ntau yam khoom ntawm lwm chav kawm hauv cov piv txwv piv txwv. Qhov no tso cai rau koj los ua qauv muaj kev sib koom ua ke ntawm cov khoom. Koj tuaj yeem pom cov kev sib raug zoo li no tsis tu ncua hauv lub ntiaj teb tiag
Dab tsi yog instantiation nyob rau hauv cov nqe lus ntawm OOP terminology?
Hauv computer science, instantiation yog qhov realization ntawm ib yam khoom predefined. Hauv OOP (object-oriented programming), chav kawm ntawm cov khoom yuav raug txhais. Cov txheej txheem no hu ua 'instantiation.' Lo lus 'instantiation' kuj tseem siv rau lwm qhov chaw ntawm computer science, xws li hauv kev tsim cov servers virtual
OOP hauv C# yog dab tsi?
Object Oriented Programming (OOP) yog ib qho qauv kev ua haujlwm uas cov kev pab cuam tau teeb tsa nyob ib puag ncig cov khoom thiab cov ntaub ntawv es tsis yog kev nqis tes ua thiab logic. OOP tso cai rau decomposition ntawm ib qho teeb meem mus rau ib tug xov tooj ntawm cov chaw hu ua cov khoom thiab ces tsim cov ntaub ntawv thiab ua hauj lwm nyob ib ncig ntawm cov khoom