all

Callable

• all<T>(xs: Traversable<T, unknown>, predicate: (x: T) => boolean): boolean

---

• The function tests whether all elements in the Traversable satisfy the predicate.

  Example

  all([true, true, true], identity)
  // => true
  
  all([10, 11, 5], x => x > 10)
  // => false
  
  all([true, false, true], identity)
  // => false
  
  all([], identity)
  // => true

  Alternatives

  • ECMAScript - Array.every
  • Lodash - every

  Proposals

  • Iterator.prototype.every

  @see

  every

  ---

  Type parameters

  • T

    The element type.

  Parameters

  • xs: Traversable<T, unknown>

    The values to check.

  • predicate: (x: T) => boolean

    The predicate that will be checked on every element.

  Returns boolean

  Whether all elements satisfy the predicate.