External module "utils/none-by/docs/types/index.d"

noneBy

• noneBy<T, U>(collection: Collection<T>, predicate: Predicate<T, U>, thisArg?: ThisParameterType<Predicate<T, U>>): boolean

• Tests whether all elements in a collection fail a test implemented by a predicate function.

  Notes

  • The predicate function is provided three arguments:

    • value: collection value
    • index: collection index
    • collection: the input collection

  • The function immediately returns upon encountering a truthy return value.

  • If provided an empty collection, the function returns true.

  Type parameters

  • T

  • U

  Parameters

  • collection: Collection<T>

    input collection

  • predicate: Predicate<T, U>

    test function

  • Optional thisArg: ThisParameterType<Predicate<T, U>>

    execution context

  Returns boolean

  boolean indicating whether all elements fail a test

  Example

  function isPositive( v ) {
      return ( v > 0 );
  }
  
  var arr = [ -1, -2, -3, -4 ];
  
  var bool = noneBy( arr, isPositive );
  // returns true