define(['./filter', '../utility/matches'], function(filter, matches) {

  /**
   * Performs a deep comparison between each element in `collection` and the
   * source object, returning an array of all elements that have equivalent
   * property values.
   *
   * @static
   * @memberOf _
   * @category Collection
   * @param {Array|Object|string} collection The collection to search.
   * @param {Object} source The object of property values to match.
   * @returns {Array} Returns the new filtered array.
   * @example
   *
   * var users = [
   *   { 'user': 'barney', 'age': 36, 'status': 'busy', 'pets': ['hoppy'] },
   *   { 'user': 'fred',   'age': 40, 'status': 'busy', 'pets': ['baby puss', 'dino'] }
   * ];
   *
   * _.pluck(_.where(users, { 'age': 36 }), 'user');
   * // => ['barney']
   *
   * _.pluck(_.where(users, { 'pets': ['dino'] }), 'user');
   * // => ['fred']
   *
   * _.pluck(_.where(users, { 'status': 'busy' }), 'user');
   * // => ['barney', 'fred']
   */
  function where(collection, source) {
    return filter(collection, matches(source));
  }

  return where;
});