code: function result(object, path, defaultValue) {
        path = castPath(path, object);
  
        var index = -1,
            length = path.length;
  
        // Ensure the loop is entered when path is empty.
        if (!length) {
          length = 1;
          object = undefined;
        }
        while (++index < length) {
          var value = object == null ? undefined : object[toKey(path[index])];
          if (value === undefined) {
            index = length;
            value = defaultValue;
          }
          object = isFunction(value) ? value.call(object) : value;
        }
        return object;
      }
docs: This method is like `_.get` except that if the resolved value is a
  function it's invoked with the `this` binding of its parent object and
  its result is returned.
  
  @static
  @since 0.1.0
  @memberOf _
  @category Object
  @param {Object} object The object to query.
  @param {Array|string} path The path of the property to resolve.
  @param {*} [defaultValue] The value returned for `undefined` resolved values.
  @returns {*} Returns the resolved value.
  @example
  
  var object = { 'a': [{ 'b': { 'c1': 3, 'c2': _.constant(4) } }] };
  
  _.result(object, 'a[0].b.c1');
  // => 3
  
  _.result(object, 'a[0].b.c2');
  // => 4
  
  _.result(object, 'a[0].b.c3', 'default');
  // => 'default'
  
  _.result(object, 'a[0].b.c3', _.constant('default'));
  // => 'default'