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  HTML5 Web Worker

Web Worker is a JavaScript multithreading solution provided by HTML5. we can put some compute intensive codes into Web Worker and it will not hang the user interface. 1. How to use Web Worker Web Worker's basic mechanism is to use Worker to load a JavaScript file to create a new thread in JavaScript's main thread. It will not block other thread's execution and will provide a data exchange interface between main thread and new thread : postMessage() and onmessage. Let's look at an example: //work...

   JavaScript,HTML,Web Worker     2012-12-02 06:25:00

  PHP Multithreading – Faking It

PHP doesn’t really support multi-threading per se but there are ways to do “fake” multithreading. Here’s one I saw in the PHPClasses.org newsletter – Multi-thread Simulation. Note that this class is intedend for use on a webserver, as opposed to running PHP scripts from a command line (or similar). Check the end of this post for some alternatives you can try if you’re using PHP as a stand-alone scripting language. Now, I’m going to be lazy and just ...

   PHP,Multithreading,Possible,CURL,Fake,Si     2011-09-04 23:07:22

  Maybe we need //Comment comment

Do we need comment in our programs? Depends, if we can write a program which can clearly tell s the reader what the program does, then we had better to avoid unnecessary comments. However, if the program we develop is complex enough and it involves some uncommon logic which needs more explanation, then we have to add comment and make sure the comment we add can correctly tell the readers what we do. The worst scenarios is not you forget or you don't want to add comment, it's that you add comment...

   comment,programming     2014-07-23 04:38:04

  Installing LAMP On Ubuntu

In this guide I will show you how to install a LAMP system. LAMP stands for Linux, Apache, MySQL, PHP. The guide is intended to help those who have very little knowlegde of using Linux. Install ApacheTo start off we will install Apache.1. Open up the Terminal (Applications > Accessories > Terminal).2. Copy/Paste the following line of code into Terminal and then press enter:sudo apt-get install apache23. The Terminal will then ask you for you're password, type it an...

   LAMP,Ubuntu,Linux,Apache,MySQL,,PHP     2011-04-28 05:20:02

  Guide on recovering data in MySQL

In our daily work, there might be mistakes made which got some data or even databases deleted in MySQL. If this happens on production, it would be a nightmare. In case this happens, normally DBA would jump in to save the world. And they would try to recover the data from the backup if there is any. But if there is no backup, then the show stops. Hence database backup is necessary on production environments to avoid such awkward situation. Also normally in MySQL, binlog should be enabled as well ...

   MYSQL,DATABASE,BACKUP,BINLOG,EXAMPLE     2020-08-26 07:50:30

  Android create button tutorial

This tutorial assumes that you already have an activity and are using an XML layout. Open the layout XML and add the button element.  Assign an ID with the “@+id” operator.  The + tells Android to generate an ID for this element so that you can reference it in your Java files. This is an example. Your layout and text elements will probably be very different. In this example case, the ID of the button is “close”. <Button android:id="@+id/close" android:lay...

   Android,Simulator,Button,XML,Tutorial     2014-11-07 08:30:10

  One interesting story about Chinese software development

I have once seen an interesting complaint written by one foreigner about Beijing South Railway Station (China) on foursquare. It says: "There is simply no way to buy a ticket at the machine unless you have a Chinese ID. What the hell they have English interface for then?" Apparently,the foreigner cannot buy ticket because he doesn’t have Chinese ID but there still presents an English interface for foreigners on the vending machine. Because of my profession, I find this awkward situation w...

   Software design,User experience,Importance     2012-03-26 14:42:50

  sorting in C++: 3 times faster than C.

If you don't know C++ well, you might be surprised how fast C++ can be sometimes. This is especially true when code involved is small, because then inlining - which is what C++ is very good at - and templating, which makes excessive inlining possible in the first place - has the most effect. The following code compares C and C++ sorting:  #include <iostream>#include <algorithm>#include <vector>#include "stop_watch.inl" // see https://...

   C++,Sorting,C,faster,efficiency     2012-03-17 12:59:45

  Get associated file icon with only extension name using C++ on Windows

I have searched on Google for a few examples on how to get associated file icon with only file extension name using C++ on Windows. There are some useful information provided on MSDN which explains the use of SHGetFileInfo() function.It also gives an example code, but it doesn't say how to do it with only the extension name.  Here I give an example code on how to achieve this after I gathered and summarized some  useful information from Internet. I have tested the code on my PC, it w...

   File icon,Windows,Association,Extension name,C++     2012-03-26 09:55:20

  Not better, but different

The most important feature of Apple products is usability--Simple, aesthetic, easy to use.Their products may not necessarily the most powerful, but they usually are the easiest to use. Following picture show a Mac (left) and a PC(right), which one looks better?Many products are trying to mimic these features, but one problem comes out:It's hard to keep a product simple while providing so many new features.If you continuously add new features to your product,  your product will become more c...

   Market positioning,Product manager     2012-05-19 13:29:20

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