Video: Yuav ua li cas yog ib tug predicate nyob rau hauv software?
2024 Tus sau: Lynn Donovan | [email protected]. Kawg hloov kho: 2023-12-15 23:47
Predicate hauv lub ntsiab lus dav dav yog ib nqe lus hais txog tej yam uas yog qhov tseeb lossis tsis tseeb. Hauv programming, kwv yees sawv cev ib qho kev sib cav ua haujlwm uas xa rov qab tus nqi boolean.
Ib yam li ntawd, piv txwv li cas yog qhov tseeb?
Txhais kwv yees : Cov kwv yees yog ib feem ntawm kab lus lossis kab lus uas muaj cov lus qhia thiab hais ib yam dab tsi txog cov ntsiab lus. Nws suav nrog cov lus qhia thiab txhua yam hloov kho nws. Qhov no tseem hu ua tiav kwv yees . Piv txwv ntawm a Predicate : Peb npaj tau zaub mov.
Tsis tas li ntawd, koj txhais tau li cas rau qhov predicate? Cov kwv yees ntawm ib kab lus yog ib feem uas hloov cov ntsiab lus nyob rau hauv ib txoj kev. Vim hais tias cov ntsiab lus yog tus neeg, qhov chaw, los yog yam uas ib kab lus hais txog, lub kwv yees yuav tsum muaj cov lus qhia piav qhia qhov kev kawm ua dab tsi thiab tuaj yeem suav nrog kev hloov kho.
Tom qab ntawd, lo lus nug yog, dab tsi yog qhov ua haujlwm ua ntej?
A kwv yees yog qhov tseem ceeb a muaj nuj nqi uas txiav txim siab seb ib yam dab tsi yog qhov tseeb lossis tsis tseeb raws li nws cov lus sib cav. Nws yog ib qho (tab sis tsis tsim nyog) rau kwv yees kom muaj npe "isX", xws li isEven lossis isNumber.
Predicate software testing yog dab tsi?
Predicates yog cov kab lus uas tuaj yeem ntsuas rau tus nqi boolean, piv txwv li, muaj tseeb lossis cuav. Predicate -raws li kuaj yog hais txog kev ua kom cov no kwv yees raug siv kom raug.
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