custom _.results() function

results.js

// Iterates an one level object with functions inside and return invoked values
// This was an unmerged PR by me https://github.com/jashkenas/underscore/pull/1482
// Patch it in a Backbone project when needed.
_.results = function(object, context) {
  if (typeof context == "undefined") {
    context = object;
  };
  var copy = {};
  _.each(object, function(value, key) {
    var v = _.isFunction(value) ? value.call(context) : value;
    copy[key] = v;
  });
  return copy;
};

test.js

  test('_.results iterates an object with function and return invoked results', function() {
    var obj = {w: '', x: 'x', y: function(){ return this.x; }};
    var results = _.results(obj)
    strictEqual(results.w, '');
    strictEqual(results.x, 'x');
    strictEqual(results.y, 'x');

    var contextObj = {x: '_x'}
    var results = _.results(obj, contextObj)
    strictEqual(results.w, '');
    strictEqual(results.x, 'x');
    strictEqual(results.y, '_x');
  });