Vim li cas dhau los ntawm kev siv const?
Vim li cas dhau los ntawm kev siv const?

Video: Vim li cas dhau los ntawm kev siv const?

Video: Vim li cas dhau los ntawm kev siv const?
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Siv const yog qhov tseem ceeb rau ntau yam: Nws enlists cov compilers pab kom ntseeg tau tias qhov tseem ceeb uas yuav tsum tsis txhob hloov tsis hloov(tus sau yuav cuam tshuam yog tias koj sim, zoo li hauv qhov piv txwv saum toj no). Nws qhia tus programmer tias txoj haujlwm yuav tsis hloov tus nqi ntawm qhov kev sib cav. Qhov no tuaj yeem pab nrog kev debugging.

Vim li cas peb thiaj li dhau qhov kev siv?

Peb dhau los ntawm kev siv const kom tsis txhob ua ib daim qauv ntawm cov khoom. Thaum koj dhau qhov kev siv const, koj dhau tus pointer (cov lus qhia yog cov taw qhia nrog cov suab thaj ntxiv kom lawv saj tsawg dua iab). Thiab xav tias qhov khoom tsis tseem ceeb rau luam, tau kawg.

Dab tsi yog qhov txiaj ntsig ntawm kev tshaj tawm qhov ntsuas raws li kev siv const?

Cov ntaub ntawv siv los ua cov haujlwm tsis ua haujlwm kuj tuaj yeem ua rau const. Qhov no tso cai rau peb nkag mus rau qhov kev sib cav tsis tas yuav luam tawm, thaum lav tias txoj haujlwm yuav tsis hloov pauv tus nqi raug xa mus.

Kuv yuav ua li cas thiaj dhau qhov kev siv const?

Thaum koj dhau los ntawm kev siv const, koj coj cov lus sib cav los ntawm kev siv(tsis txhob ua ib qho luam ntawm nws), tab sis tsis tuaj yeem hloov pauv rau qhov khoom qub (ntau npaum li cas yuav tshwm sim thaum koj yuav coj cov parameters los ntawm tus nqi).

Vim li cas peb hla lossis rov qab hloov pauv los ntawm const ?

Kev hla qhov ntsuas los ntawm kev siv const yuav tsum tau xaiv qhov twg cov lus qhia ntawm cov neeg siv tau xav tau tiag tiag, lossis ua kev txhim kho kev ua tau zoo tsuas yog tias tus nqi ntawm qhov muaj peev xwm aliasing yuav dhau los ntawm qhov tus nqi ntawm kev luam cov parameter. Txhawm rau zam kom tsis txhob luam tawm yam tsis tsim nyog, yog li txhim kho kev ua haujlwm.

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