xdash • Readme | API

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xdash / not

Function: not()

not<Args>(fn): (…args) => boolean

NOT operator for functions.

Type parameters

• Args extends readonly unknown[]

Parameters

• fn

function to negate

Returns

Function

a function that negates the result of the input function

Parameters

• …args: Args

Returns

boolean

Example

const isEven = (n: number) => n % 2 === 0
const isOdd = not(isEven)
isOdd(2) // returns false

Source

fn-ops.ts:43