Javascript Array selectMany(selector, resSelector)

Array.prototype.selectMany = function (selector, resSelector) {
 resSelector = resSelector || function (i, res) { return res; };
 return this.aggregate(function (a, b) {
  return a.concat(selector(b).select(function (res) { return resSelector(b, res) }));
 }, []);/*from  ww w.j av a 2 s  .c o m*/
};