Video: Dab tsi yog dynamic hauv C #?
2024 Tus sau: Lynn Donovan | [email protected]. Kawg hloov kho: 2023-12-15 23:47
185. Ib dynamic lo lus tseem ceeb yog tshiab rau C# 4.0, thiab yog siv los qhia rau lub compiler tias qhov sib txawv ntawm hom tuaj yeem hloov lossis tsis paub txog thaum lub sijhawm ua haujlwm. Xav tias nws muaj peev xwm cuam tshuam nrog Ib Yam Tsis tas yuav pov nws.
Kuj paub yog, dab tsi yog hom dynamic hauv C #?
Hom Dynamic hauv C # Hauv C# 4.0, ib hom yog qhia uas yog hu ua a dynamic hom . Nws yog siv los zam lub sijhawm sau ua ke hom kev tshuaj xyuas. Lub compiler tsis kos lub hom ntawm dynamic hom variable ntawm compile lub sij hawm, es tsis txhob ntawm no, lub compiler tau txais cov hom ntawm lub sijhawm khiav.
Kuj Paub, hom dynamic hauv net yog dab tsi? C# - Dynamic Type NET 4.5) qhia ib qho tshiab hom uas zam compile lub sij hawm hom kev tshuaj xyuas. A dynamic hom khiav tawm hom tshawb xyuas ntawm lub sijhawm sau; xwb, nws daws hom ntawm lub sijhawm khiav. A dynamic hom tuaj yeem txhais tau tias siv cov dynamic lo lus tseem ceeb.
Ib yam li ntawd, koj tuaj yeem nug, qhov txawv ntawm VAR thiab dynamic hauv C# yog dab tsi?
var yog statically typed variable. Nws tshwm sim hauv a ntaus ntawv sib txawv heev, nyob rau hauv lwm yam lus cov ntaub ntawv hom ntawm cov variables yog inferred nyob rau hauv compile lub sij hawm. dynamic yog dynamically typed variables. Qhov no txhais tau tias, lawv hom yog inferred ntawm run-time thiab tsis compile lub sij hawm nyob rau hauv sib piv rau var hom.
Dab tsi yog dynamic datatype?
Dynamic cov ntaub ntawv hom yog dynamic nyob rau hauv qhov thiab tsis tas yuav pib thaum lub sij hawm tshaj tawm. Ib variable ntawm cov dynamic cov ntaub ntawv hom tuaj yeem pib los ntawm txhua hom ntaub ntawv xws li int, ntab, hlua lossis khoom. Dynamic Cov variables tuaj yeem siv los tsim cov khoom thiab xa rov qab los ntawm kev ua haujlwm.
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