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Convert ext3 to ext4 file system on CentOS
ext3 is a journaled file system that is commonly used by the Linux kernel. It is the default file system for many popular Linux distributions, including Debian. Stephen Tweedie. On June 28, 2006, Theodore Ts'o, the principal developer of ext3, announced an enhanced version, called ext4. Today, we will show how to convert ext3 to ext4 format on CentOS. System environment: Release version : CentOS release 5.4(Final) Kernel: Linux localhost.lo...
CentOS, ext3 to ext4 2012-11-21 11:40:45
10 Tools Every Software Developer Should Use in 2018
The main problem I noticed about most programmers is that even though they know about latest software development tools, they never really spend significant time to learn them well. As a programmer, I always try to learn new tools and latest technologies. At the same time, I also look to improve my knowledge of tools which I have been using for many years. Whether you're a front-end developer, full-stack programmer or part of a DevOps team, you should familiarize yourself with the latest develop...
SOFTWARE DEVELOPMENT, SOFTWARE DEVELOPMENT TOOLS, PROGRAMMING TOOLS 2018-04-28 07:08:00
WeChat owns 70 million users now out of China
According to 36 Kr, on this year's Tencent Partner Conference, Tencent president Zhiping Liu announced that WeChat had more than 70 million users out of China, it entered Malaysia, Thailand, India, Indonesia, the Middle East, Mexico and other countries. And it has become the No.1 IM app in Mexico .While in early April, WeChat had only 40 million users abroad. In just three months, 30 million news users started to use WeChat.Tencent spares no effort to promote WeChat to the international market. ...
WeChat,Internationalization,China,Tencent 2013-07-03 03:09:34
PHP to get long running process progress dynamically
Frequently in web applications, we may have a request to the back end system which may trigger a long running process such as searching huge amount of data or a long running database process. Then the front end webpage may hang and wait for the process to be finished. During this process, if we can provide the user some information about the progress of the back end process, it may improve user experience. Unfortunately, in web applications, this seems not an easy task because web scripting lang...
AJAX,PHP,progress,long process,demo 2012-06-04 07:29:37
Stream API in Java 8
Overview In this lesson on Stream API in Java, we will study how we can put Streams to use to write efficient and much more maintainable code. We will also write code with and without Streams so that we are able to compare the two versions. Before doing all this, we must know how to create a Stream and process it and that is what we will get started with. Introduction to Streams We will be starting with creating Streams. Let us get started with the Stream<T> API which enables us to play w...
STREAM API,JAVA 8,DEVELOPMENT,TEAM 2018-01-30 00:14:46
Facebook : App Center is more suitable for developers
Facebook recently announced that they will release their own app store named App Center. It will be released in a few weeks. At the same time, Facebook also released the introduction page of the App Center, it introduces to developers the process of app submission and the standards of app approval.Facebook allows developer to provide charged apps via App Center. Since it has over 900 million active users globally, so many developers are willing to develop apps on this platform. Facebook will dec...
Facebook,App Center,Introduction 2012-05-13 01:03:56
Fuzzy search algorithm in Sublime Text
Fuzzy string searching is the technique of finding strings that match a pattern approximately (rather than exactly. In many editors, we can easily find the Find menu item to do exact matching. While in Sublime Text and some other editors, we can use fuzzy string searching as well if we just want to have an approximate match. There is some algorithm implemented in Sublime Text to implement achieve this. First the search query is split into characters, join them with a regex wildcard, and then run...
Sublime Text,Fuzzy search 2013-10-14 22:49:38
10 design flaws of JavaScript
JavaScript's design took only ten days. Moreover, the designer didn't want to design it initially, he just wanted to complete the task assigned by company. It is now a very powerful client side programming language used in almost all the websites. It's an excellent language, but it also has some flaws. 1. Not suitable for large projects JavaScript doesn't have namespace, it's hard to be modular, there is no standard for putting codes in multiple source files. It allows defining functions with th...
JavaScript, Design flaw, Object 2012-11-29 11:39:35
MySQL index optimization
Problem description: We need to access a very big table which has 40 million records. In the table, id is the primary key and program_id is indexed. When executing a select query: select * from program_access_log where program_id between 1 and 4000 The above query executes very slowly, we thought it was because there were too many records in the table. So we added id in the where condition to limit the search so that each time only half a million records would be read. select * fr...
MySQL,Index search, Partition 2012-12-26 13:14:20
HTML Email Guide
Many of us may subscribe to some newsletters to get update about their site or information about a topic such as JavaScript Weekly, we may receive an email every week or every month to know what's happening there. The email we receive is just a simple HTML page but with an Email format called HTML Email. It seems it's simple to write this kind of HTML Email. But the thing is it's not so easy. It takes much effort by just designing an Email template. Whether the HTML Email can be displayed norm...
HTML Email,Guide 2013-06-16 03:38:36
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