Module cond

cond

• cond<R>(pairs: [((...args: any[]) => boolean), ((...args: any[]) => R)][][]): R

• Creates a function that iterates over pairs and invokes the corresponding function of the first predicate to return truthy. The predicate-function pairs are invoked with the this binding and arguments of the created function.

  since

  5.12.0

  example

  const func = cond([
    [matches({ 'a': 1 }),         () => 'matches A'],
    [conforms({ 'b': isNumber }), () => 'matches B'],
    [() => true,                  () => 'no match']
  ])
  
  func({ 'a': 1, 'b': 2 })
  // => 'matches A'
  
  func({ 'a': 0, 'b': 1 })
  // => 'matches B'
  
  func({ 'a': '1', 'b': '2' })
  // => 'no match'
  

  Type Parameters

  • R = any

  Parameters

  • pairs: [((...args: any[]) => boolean), ((...args: any[]) => R)][][]

    The predicate-function pairs.

  Returns R

  Returns the new composite function.