Dab tsi yog chav kawm hauv C# nrog piv txwv?
Dab tsi yog chav kawm hauv C# nrog piv txwv?

Video: Dab tsi yog chav kawm hauv C# nrog piv txwv?

Video: Dab tsi yog chav kawm hauv C# nrog piv txwv?
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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.

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