Function eachWithIndex

sdk/src/CloudSocketClientLib.js:3591–3596

(i, el, cb)

                            var next = after(ary.length, done);

                            var eachWithIndex = function(i, el, cb) {
                                each(el, function(error, msg) {
                                    result[i] = msg;
                                    cb(error, result);
                                });
                            };

                            for (var i = 0; i < ary.length; i++) {
                                eachWithIndex(i, ary[i], next);