_.cond

_.cond(pairs)

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

4.0.0

Arguments

1. pairs (Array): The predicate-function pairs.

Returns

(Function): Returns the new composite function.

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'