complement

v0.9.6

STATUS

Passing

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VISIBILITY

Public

PUBLISHED

5 years ago

SIZE

3 KB

Takes a function `f` and returns a function `g` such that if called with the same arguments

Boolean

Function

Utils

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complement (

f:Function

) : Function

Takes a function f and returns a function g such that if called with the same arguments when f returns a “truthy” value, g returns false and when f returns a “falsy” value g returns true.

R.complement may be applied to any functor

Example

const isNotNil = R.complement(R.isNil);
     isNil(null); //=> true
     isNotNil(null); //=> false
     isNil(7); //=> false
     isNotNil(7); //=> true

Argument

f: Function

Returns

Function