when | /rambda.js | rambda@9.4.1

function when

import { when } from "https://dotland.deno.dev/x/rambda@9.4.1/rambda.js";

when<T, U>(

predicate: (x: T) => boolean,

whenTrueFn: (a: T) => U,

input: T,

): T | U

It pass input to predicate function and if the result is true, it will return the result of whenTrueFn(input). If the predicate returns false, then it will simply return input.

when<T, U>(predicate: (x: T) => boolean, whenTrueFn: (a: T) => U): (input: T) => T | U

when<T, U>(predicate: (x: T) => boolean): ((whenTrueFn: (a: T) => U) => (input: T) => T | U)

It pass input to predicate function and if the result is true, it will return the result of whenTrueFn(input). If the predicate returns false, then it will simply return input.

Type Parameters

Parameters

predicate: (x: T) => boolean

whenTrueFn: (a: T) => U

input: T

Returns

T | U

Type Parameters

Parameters

predicate: (x: T) => boolean

whenTrueFn: (a: T) => U

Returns

(input: T) => T | U

Type Parameters

Parameters

predicate: (x: T) => boolean

Returns

((whenTrueFn: (a: T) => U) => (input: T) => T | U)