like `asyncMap`

slide-sample.js

var asyncMap = require('slide').asyncMap;
var http = require('http');


asyncMap(
	[
		"http://www.baidu.com",
		"http://zhidao.baidu.com"
	] ,
	function (url, cb) {
		console.log(url);
		http.get(url, function (r) {
			var d = '';
			r.on('data', function(c) {d+=c.toString();});
			r.on('end', function() {
				cb(null, d);
			});
		});
	},
	function (er, r) {
		console.log(r);
	}
);