Module function/complement

complement

• complement<F>(pred: F): (...args: Parameters<F>) => boolean

• 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.

  example

   var isNotNil = complement(isNil);
   isNil(null); //=> true
   isNotNil(null); //=> false
   isNil(7); //=> false
   isNotNil(7); //=> true
  

  Type parameters

  • F: (...args: any[]) => any

  Parameters

  • pred: F

  Returns (...args: Parameters<F>) => boolean

  • • (...args: Parameters<F>): boolean

    • Parameters

      • Rest ...args: Parameters<F>

      Returns boolean