Here's the official solution in case you want to compare notes: var http = require('http') var bl = require('bl') var results = [] var count = 0 function printResults () { for (var i = 0; i < 3; i++) console.log(results[i]) } function httpGet (index)…

var http = require('http') var url = require('url') function parsetime (time) { return { hour: time.getHours(), minute: time.getMinutes(), second: time.getSeconds() } } function unixtime (time) { return { unixtime : time.getTime() } } var server = ht…

Asynchronous Programming with Async and Await You can avoid performance bottlenecks and enhance the overall responsiveness of your application by using asynchronous programming. However, traditional techniques for writing asynchronous applications ca…

JavaScript ES7的async/await语法让异步promise操作起来更方便.如果你需要从多个数据库或者接口按顺序异步获取数据,你可能最终写出一坨纠缠不清的promise与回调.然而使用async/await可以让我们用更加可读.可维护的方式来表达这种逻辑. 这篇教程以图表与简单例子来阐述JS async/await的语法与运行机理. 在深入之前,我们先简单回顾一下promise,如果对这方面概念有自信,大可自行跳过. Promise 在JS的世界里,一个promise抽象表达一个…

在Linux 服务器上配置好NFS 根文件系统后,在单板侧挂载NFS 文件系统,具体操作如下:ifconfig eth0 hw ether 00:10:85:18:01:84 /*配置MAC地址*/ifconfig eth0 10.85.180.184 netmask 255.255.254.0 /*配置IP地址和子网掩码*/route add default gw 10.85.180.1 /*配置默认网关*/mount -t nfs -o nolock 10.85.180.133:/home/…

~~ JUGGLING ASYNC ~~ 其实就是一个循环,在循环里面输出的顺序,和排列后在外面的顺序不一样,这是为什么呢? 用第三方async包,直接报错了…… This problem is the same as the previous problem (HTTP COLLECT) inthat you need to use `http.get()`. However, this time you will beprovided with three URLs as the first…

Using HttpContext.Current in WebApi is dangerous because of async HttpContext.Current gets the current context by Thread (I looked into the implementation directly). 提问中的描述 It would be more correct to say that HttpContext is applied to a thread; or a…

A complex 16-Level XSS Challenge, held in summer 2014 (+1 Hidden Level) Index Level 0 Level 1 Level 2 Level 3 Level 4 Level 5 Level 6 Level 7 Level 8 Level 9 Level 10 Level 11 Level 12 Level 13 Level 14 Level 15 Hidden Level Rules Call prompt(1) to w…

I was recently reading a series on “Write Sequential Non-Blocking IO Code With Fibers in NodeJS” by Venkatesh. Venki was essentially trying to emphasize that writing non-blocking code in NodeJS (either via callbacks, or using promises) can get hairy…

Asynchronous code reminds me of the story of a fellow who mentioned that the world was suspended in space and was immediately challenged by an elderly lady claiming that the world rested on the back of a giant turtle. When the man enquired what the t…