Video: Dab tsi yog chav kawm hauv C# nrog piv txwv?
2024 Tus sau: Lynn Donovan | [email protected]. Kawg hloov kho: 2023-12-15 23:47
A chav ua vaj tse yog ib qho yooj yim chav kawm nrog cov tswv cuab xws li cov txheej txheem thiab cov khoom. Cov chav kawm piav qhia txog kev ua haujlwm ntawm cov khoom uas nws tuaj yeem siv los ua kom sai. Feem ntau, thaum ua hauj lwm nrog cov qub txeeg qub teg hierarchies, qhov tsawg tshaj plaws tshwj xeeb puag chav kawm tsis tuaj yeem sawv cev rau qhov khoom tiag.
Ib yam li ntawd, nws yog nug, dab tsi yog ib chav ua vaj tse?
A chav ua vaj tse yog a chav kawm uas muaj kev siv rau tag nrho nws txoj kev uas tau txais los ntawm kev paub daws teeb los yog siv los ntawm kev sib tshuam. Nws kuj tsis txhais ib txoj kev paub daws teeb meem ntawm nws tus kheej. Yog li nws tuaj yeem suav tau tias ib qho twg chav kawm uas tsis yog abstract chav kawm los yog interface yog ib chav ua vaj tse.
Ib yam li ntawd, dab tsi yog qhov txawv ntawm chav kawm ua vaj tsev thiab chav kawm paub daws teeb meem? Qhov tiag xwb txawv yog a chav ua vaj tse tuaj yeem ua tau sai vim tias nws muab (lossis qub txeeg qub teg) kev siv rau txhua txoj hauv kev. Ib chav kawm abstract tsis tuaj yeem ua sai sai vim tias tsawg kawg ib txoj hauv kev tsis tau ua tiav. Cov chav kawm Abstract yog txhais tau tias yuav ncua.
Tsis tas li ntawd, dab tsi yog chav kawm hauv C ++ nrog Piv txwv program?
A chav ua vaj tse yog ib qho dog dig chav kawm uas tsis muaj lub luag haujlwm virtual nkaus xwb thiab yog li tuaj yeem ua tau sai. Ntawm no yog lub hauv paus code ntawm lub C++ program uas txawv ntawm cov pob zeb thiab abstract chav kawm . Cov C++ program tau ua tiav tiav thiab khiav ntawm Linux system.
Dab tsi yog 1 2 3 mix rau pob zeb?
Pob zeb yog ua los ntawm cement , xuab zeb, gravel thiab dej. Hauv kev ua pob zeb muaj zog, cov khoom xyaw no feem ntau yuav tsum yog sib xyaw nyob rau hauv ib tug ratio ntawm 1 : 2 : 3 : 0.5 kom ua tiav lub zog siab tshaj plaws. Qhov ntawd yog 1 ib feem cement , 2 cov xuab zeb, 3 qhov chaw gravel, thiab 0.5 feem dej.
Pom zoo:
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
Ib qho piv txwv ntawm chav kawm yog dab tsi?
Chav Kawm yog dab tsi? Hauv lub ntiaj teb tiag tiag, koj feem ntau muaj ntau yam khoom ntawm tib yam. Piv txwv li, koj lub tsheb kauj vab tsuas yog ib qho ntawm ntau lub tsheb kauj vab hauv ntiaj teb. Siv cov lus hais txog cov khoom siv, peb hais tias koj lub tsheb kauj vab yog ib qho piv txwv. ntawm chav kawm ntawm cov khoom hu ua tsheb kauj vab
Dab tsi yog chav kawm ntim nrog piv txwv hauv C ++?
Containership in C ++ Thiab cov chav kawm uas muaj cov khoom thiab cov tswv cuab ntawm lwm chav kawm hauv qhov kev sib raug zoo no yog hu ua chav tsev ntim khoom. Cov khoom uas yog ib feem ntawm lwm yam khoom yog hu ua muaj khoom, whereas khoom uas muaj lwm yam khoom raws li nws ib feem los yog attribute yog hu ua container object
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 txawv ntawm qhov piv txwv hauv zos thiab chav kawm sib txawv?
Cov kev hloov hauv zos tsis pom sab nraum txoj kev. Cov piv txwv sib txawv tau tshaj tawm hauv chav kawm, tab sis sab nraum ib txoj hauv kev. Lawv kuj raug hu ua cov tswv cuab lossis cov kev hloov pauv. Class/static variables tau tshaj tawm nrog lo lus tseem ceeb zoo li qub hauv chav kawm, tab sis sab nraum ib txoj kev