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SEARCH KEYWORD -- static final

  The Greatest Regex Trick Ever (Simplified)

There is a post which is really hot recently which showcased a best ever regular expression trick. In this post, it provides a trick which can be adapted to situations where one wants to match some patterns desired and exclude the patterns undesired. In simple, the trick is : Pattern not desired | (Pattern desired) Then taking the group 1 match of the capturing group of matched. This group will contain the strings matching the desired patterns. Have to say this trick is really neat and brilliant...

   REGULAR EXPRESSION,PROGRAMMING,JAVA     2015-10-01 21:59:05

  A simple example of drawing bar chart with label using d3.js

D3.js is a very popular graph library to help developers draw various kind of charts using JavaScript in a webpage. It utilizes the SVG format supported by all major modern browsers and can help developers get rid of the old age of Flash or server side graph drawing libraries. In this post, we will introduce some simple examples of drawing bar chart with labels using D3.js.  First, let's see what will be the final look of the graph drawn. Below is the complete source code for this example....

   JAVASCIPT,D3,BAR CHART,LABEL,TUTORIAL     2020-05-16 23:25:40

  Twitter is the winner of US election

Yesterday, the final result of the U.S. election was that Obama defeated Romney and he was re-election as President of the United States of America, Later he made a victory speech. While in the Internet world, the real winner is not Obama, but Twitter. Why? Because there was no downtime for Twitter yesterday.On election day, There were a total of 31 million election-related Tweets posted, In peak period, there were 327,452 tweets posted per minute,  the peak record was 874,560, about 15,107...

   Twitter, US election,Fail whale     2012-11-08 10:55:38

  Best practices of front end optimization

1. Use DocumentFragment or innerHTML to replace complex elements insertion DOM operation on browser is expensive. Although browser performance is improved much, multiple DOM elements insertion is still expensive and will affect the page load speed. Assume we have an ul element on our page, we now want to retrieve a JSON list using AJAX and then update the ul using JavaScript. Usually we may write it as : var list = document.querySelector('ul'); ajaxResult.items.forEach(function(item) { // ...

   JavaScript,Front end,Optimization,Tips     2013-07-06 11:26:27

  IDC report shows developers are losing ineterst in Android development

IDC's latest report shows that: the development interest in Android Phones and Android iPad  has been dropping steadily. 1869 developers participated in this survey.In this quarter, the development interest in Android phone applications fell by 4.7%, down to 78.6%; the development interest in Android iPad applications fell by 2.2%, down to 65.9%. Although the survey result may not be so accurate, it still shows a trend : Although sales of Android devices is growing, it is still unable to re...

   Android,Developemnt interest,IDC,HTML5     2012-04-09 06:26:18

  Case sensitivity in PHP

Case sensitivity in PHP is a bit messy. We recommend that you stick to the case sensitive rule in any language. Here we share some case sensitivity cases in PHP.1. Case sensitive1.1 Variable name is case sensitiveAll variables names are case sensitive, these include normal variables and superglobals such as $_GET,$_POST,$_REQUEST,$_COOKIE,$_SESSION,$_GLOBALS etc.<?php$abc = 'abcd';echo $abc; //Output 'abcd'echo $aBc; //No outputecho $ABC; //No output1.2 Constant name by default is case sensit...

   PHP,Case sensitivity,Summary     2012-06-25 05:48:17

  Is Java Set ordered or not?

“Is Java Set ordered or not? ” is the most popular question asked when you interview for a Java Developer position. Many fail to answer it, and I have to admit I was one of the many. I have known the answer is “Yes and No” for a long time. No. HashSet is not ordered. Yes.TreeSet is ordered. If the interviewer continues with some follow up questions, I’m not confident that I know the answer then. Why is TreeSet ordered? Are there any other ordered S...

   ORDER,SORTEDSET,HASHSET,JAVA     2021-02-11 06:55:00

  Facebook to be listed on Nasdaq. Stock symbol "FB"

The social networking company Facebook has chosen publicly to be traded on the Nasdaq Stock Exchange under the ticker symbol "FB". It means that Facebook and Apple, Google and other tech giants ultimately did not choose the New York Stock Exchange. The news is from New York Times citing on an anonymous source.By choosing Nasdaq, Facebook has its own considerations. Compared to the market and electronic hall of the New York Stock Exchange, NASDAQ is an purely electronic market. While the former i...

   Facebook,FB,Nasdaq,IPO     2012-04-06 01:10:07

  New features in PHP 5.5

Just a few days ago, the PHP official website was redesigned. It seems we directly go from Web 1.0 era to Web 2.0 era. In addition to this new change, PHP 5.5 was also released. Some new features are added in this release. Here we summarize some of them. Enable OPCache by default When installing PHP 5.5, the Zend OPCache will be compiled as OPCache by default and OPCache is enabled by default. Some changes to the language itself Add Generator function getLinesFromFile($fileName) { if (!$file...

   PHP 5.5,New features,Generator     2013-07-05 03:13:22

  Boeing is developing Android phone?

Boeing is also involved in to the mobile Internet? It is said to be true. Recently, the Journal of the American national defense disclosure, Boeing is developing a super-safe Android phone.The magazine said Boeing President Roger Krone said this is Boeing's first foray into research and development of communication devices using the cellular network. Security infrastructure sector vice president Brian Palma said the mobile phone code-named "the Boeing Phone" has entered the final stage , is exp...

   Boeing,Android,Safety mobile phone     2012-04-15 01:45:14

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