match operator

Operator Pertandingan

PHP memiliki struktur kontrol bernama match, yang telah diperkenalkan pada PHP8.0.

Ini seperti penyederhanaan struktur kendali switch .

Contoh:

 $ food = ' strawberry ' ;
$ description = match ( $ food ) {
  ' apple ' => ' This food is an apple ' ,
  ' strawberry ' , ' raspberry ' => ' This food is a red fruit ' ,
}; // This food is a red fruit

$ food = ' unknown ' ;
$ description = match ( $ food ) {
  ' apple ' => ' This food is an apple ' ,
  ' strawberry ' , ' raspberry ' => ' This food is a red fruit ' ,
}; // UnhandledMatchError

$ food = ' unknown ' ;
$ description = match ( $ food ) {
  ' apple ' => ' This food is an apple ' ,
  ' strawberry ' , ' raspberry ' => ' This food is a red fruit ' ,
  default => ' This food is unknown ' ,
}; // This food is unknown

Penggunaan

Paket ini merupakan upaya untuk mem-porting struktur kontrol tersebut ke fungsi JS, dengan cara yang paling mendekati.

Contoh:

 import match from 'match-operator'

const food = 'strawberry'
const description = match ( food , [
  [ 'apple' , 'This food is an apple' ] ,
  [ 'strawberry' , 'raspberry' , 'This food is a red fruit' ] ,
] ) // This food is a red fruit

const food = 'unknown'
const description = match ( food , [
  [ 'apple' , 'This food is an apple' ] ,
  [ 'strawberry' , 'raspberry' , 'This food is a red fruit' ] ,
] ) // UnhandledMatchError

const food = 'unknown'
const description = match ( food , [
  [ 'apple' , 'This food is an apple' ] ,
  [ 'strawberry' , 'raspberry' , 'This food is a red fruit' ] ,
  [ match . default , 'This food is unknown' ]
] ) // This food is unknown 

Sintaks alternatif

Anda dapat menggunakan berbagai subjek jika Anda merasa lebih mudah dibaca.

 const description = match ( food , [
  [ [ 'strawberry' , 'raspberry' ] , 'This food is a red fruit' ] ,
] ) 

Instalasi

 npm install match-operator --save # If you're using NPM
yarn add match-operator # If you're using Yarn

Tes

 npm run test # If you're using NPM
yarn test # If you're using Yarn

Penafian

Ini adalah paket TypeScript pertama saya - mohon berbaik hati!

Lisensi

MIT.