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  That’s Not TDD

A few months ago I was visiting a client who was having a lot of problems using TDD. “It takes over half an hour to run our unit tests,” he said. “You are not doing TDD,” I said. “In order for tests to be valuable all of them must run fast—within a few seconds, or developers will stop running tests frequently.” “But how to I make them run fast?” he asked, “Just connecting to the database takes 30 seconds” So I showed him a techn...

   TDD,Driver,QA,Model,Uncontrol,Method     2011-08-25 02:26:29

  Rust vs Go: how to choose the best programming language for your project?

Rust and Go, these two modern programming languages, with their unique advantages, are becoming hot topics in the developer community. Their competition in performance, security, simplicity, feature set, and concurrency not only influences developers' choices but also foretells future trends in software development. Battle of Performance: Rust's Precision vs. Go's Efficiency Rust, developed by Mozilla Research, has become the preferred choice for performance-sensitive applications due to its zer...

   RUST,GO,GOLANG,COMPARISON     2024-02-10 19:36:44

  Binary tree iterator algorithm

Binary tree pre-order,in-order and post-order traversal are basics in algorithm and data structure.And the recursive binary tree traversal is a classical application of recursion. We define a binary tree node as : // C++ struct Node { int value; Node *left; Node *right; } In order binary tree traversal can be: // C++ void inorder_traverse(Node *node) { if (NULL != node->left) { inorder_traverse(node->left); } do_something(node); if (NULL != node->righ...

   Binary tree,Iterator,Traversal     2013-07-14 21:51:09

  A tutorial on Github Actions

Github Actions is a CI/CD service created by Github. It aims to make it easy to automate all software workflows, now with world-class CI/CD. Build, test, and deploy code right from GitHub. It was launched in October 2018 and was officially available to all users in November 2019. This post will give an introduction of Github Actions and explain how it works. What is Github Actions Normally Continuous Integration includes some steps, fetching code, running test, sshing into remote server in...

   GITHUB,GITHUB ACTIONS,CI,CD     2019-12-23 05:33:39

  Configure a PHP web server on CentOS

Are you used to use cPanel or Plesk on VPS for your PHP website management? If for some reason you don't want to use them? What can you do? How do you maintain your website? How do you access Emails, use FTP to upload files or use phpMyAdmin to manage your databases? You may need to configure all these services yourself on a VPS without cPanel or Plesk or other similar apps.But to configure all these services on a Linux server is not an easy job. You may spend many nights but still fail to get s...

   Cron,Linux,CentOS,Email,FTP,MySQL     2012-07-08 06:01:56

  10 notorious computer virus

The history of computer virus is the same as computer history. With more and more powerful computers, virus also are smarter and harder to be detected and killed. They have big impact on data security and system usability. We introduce 10 notorious computer virus in the history. 1. Creeper In 1971, the Creeper virus, an experimental self-replicating program, is written by Bob Thomas at BBN Technologies. Creeper infected DEC PDP-10 computers running the TENEX operating sy...

   Computer virus,History,Security     2013-07-16 21:09:22

   How to Calculate Distance in Asp.Net MVC with Google Maps

Internet users are vastly dependent on both Google and Bing mapping tools. The API available for developers provides them an ability to add value to the solutions developed by them.There is no such requirement of using everything. There are times when only a snippet can make a big difference to the app users. In this article, asp.net development experts will explain how to use Google Maps APIs and help office staff to calculate distance. When a team is travelling for the job, they either ride on...

   ASP.NET MVC     2017-03-10 06:29:23

  3 reasons why Alibaba invests on Sina Weibo

Last night, Alibaba announced acquisition of 18% shares of Sina Weibo with $586 million, according to sources close to the deal, after the completion of this deal, Alibaba will become the second largest shareholder of Sina Weibo and may become the largest shareholder in the future.This deal was supposed to be completed before Chinese Spring Festival, but because Alibaba and Sina had a heated argument about the share holding of Sina Weibo which resulted in substantial delay in the time to complet...

   Alibaba,Sina Weibo     2013-04-29 20:30:05

  How does computer boot up?

The whole boot process of computer can be summarized in 4 phases. 1. BIOS In the 70's  read-only memory(ROM) was invented. The boot program is written into ROM, the first thing the computer does is to read and execute this program when it's powered on. The program in this chip is called "Basic Input/Output System" (BIOS). 1.1 Power-On Self-Test The BIOS will first check whether the computer hardware can fulfill the basic conditions for booting up, this process is called Power-On Self-Test...

   Computer, boot, partition     2013-02-23 23:19:47

  Easy Parallel Processing in PHP

The proliferation of multicore CPUs and the inability of our learned CPU vendors to squeeze many more GHz into their designs means that often the only way to get additional performance is by writing clever parallel software. One problem we were having is that some of our batch processing jobs were taking too long to run. In order to speed the processing, we tried to split the processing file into half, and let a separate PHP process run each job. Given that we were using a dual core serv...

   PHP,Parallel processing,Multithreading like,Sleep     2011-12-12 10:58:59