Cov kws kho hniav puas tuaj yeem raug chained?
Cov kws kho hniav puas tuaj yeem raug chained?

Video: Cov kws kho hniav puas tuaj yeem raug chained?

Video: Cov kws kho hniav puas tuaj yeem raug chained?
Video: Saib Mis paub Poj niam (hluas nkauj) tus yam ntxwv lub siab 2024, Kaum ib hlis
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Thaum kawg, peb yuav kawm Chaining Decorators hauv Python programming lus. Hauv Python, kev ua haujlwm yog thawj-chav khoom. Qhov no txhais tau tias koj ua tau hla nws ncig nrog yooj yim kiag li. Koj ua tau rov qab los, thiab tseem hla nws raws li kev sib cav rau lwm tus.

Hauv qhov no, cov chav kawm puas tuaj yeem dai hauv Python?

Ib tug decorator nyob rau hauv Python yog leej twg hu tau Python yam khoom uas yog siv los hloov kho ib txoj haujlwm lossis a chav kawm . Ib qho kev siv rau qhov ua haujlwm "func" lossis a chav kawm "C" raug xa mus rau tus kws kho kom zoo nkauj thiab tus kws kho kom zoo nkauj rov qab ua haujlwm hloov lossis chav kawm.

Tsis tas li ntawd, dab tsi yog decorator hauv Python nrog piv txwv? Decorators tso cai rau peb qhwv lwm txoj haujlwm txhawm rau txhawm rau txuas tus cwj pwm ntawm kev qhwv lub luag haujlwm, tsis tas yuav hloov pauv mus tas li. Hauv Decorators , kev ua haujlwm raug coj los ua qhov kev sib cav rau hauv lwm txoj haujlwm thiab tom qab ntawd hu ua hauv lub wrapper muaj nuj nqi.

Ntxiv mus, dab tsi yog cov decorators hauv Python?

A kho kom zoo nkauj yog tus qauv tsim hauv Python uas tso cai rau tus neeg siv ntxiv kev ua haujlwm tshiab rau cov khoom uas twb muaj lawm yam tsis tau hloov kho nws cov qauv. Decorators feem ntau hu ua ua ntej lub ntsiab txhais ntawm ib tug muaj nuj nqi koj xav mus decorate.

Dab tsi yog decorator hauv Python stack overflow?

A kho kom zoo nkauj yog ib qho kev ua haujlwm uas siv lwm txoj haujlwm thiab txuas ntxiv tus cwj pwm ntawm qhov kev ua haujlwm tom kawg yam tsis tau hloov kho meej meej. Python tso cai rau "nested" ua haujlwm xws li (ib qho haujlwm hauv lwm txoj haujlwm). Python kuj tso cai rau koj rov qab ua haujlwm los ntawm lwm cov haujlwm.

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