Function cond

Returns ((Target) => R)

Returns the new composite function.

• • (Target): 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.

    Parameters

    • Target: T

    Returns R

    Returns the new composite function.

    Since

    4.0.0

    Category

    Util

    Example

    var func = _.cond([
      [_.matches({ 'a': 1 }),           _.constant('matches A')],
      [_.conforms({ 'b': _.isNumber }), _.constant('matches B')],
      [_.stubTrue,                      _.constant('no match')]
    ]);
    
    func({ 'a': 1, 'b': 2 });
    // => 'matches A'
    
    func({ 'a': 0, 'b': 1 });
    // => 'matches B'
    
    func({ 'a': '1', 'b': '2' });
    // => 'no match'
    Copy

var func = _.cond([
  [_.matches({ 'a': 1 }),           _.constant('matches A')],
  [_.conforms({ 'b': _.isNumber }), _.constant('matches B')],
  [_.stubTrue,                      _.constant('no match')]
]);

func({ 'a': 1, 'b': 2 });
// => 'matches A'

func({ 'a': 0, 'b': 1 });
// => 'matches B'

func({ 'a': '1', 'b': '2' });
// => 'no match'
Copy