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Big Corporate Layoffs Hit Shenzhen IT Manufacturing Business
At 11:00 on March 29, 3 employees were ready to jump from Shenzhen Foxconn's longhua building G14. According to witnesses, those 3 employees were negotiating with company regarding the “Foxconn diversion plan”. Liu Kun, Foxconn public speaker, told reporters that many employees are working negatively to resist this plan, but Foxconn does not agree or support their actions in this way. " Company like Foxconn with large-scale labor-intensive manufacturing enterprises in Shenzhen, is f...
What can CSS :has pseudo class be used for?
CSS's :has is a pseudo-class representing an element if any of the selectors passed as parameters matching at least one element. From the name, it's also easy to understand how it matches elements. The syntax is pretty easy as well: :has([some-selector]) With this pseudo class, it can do lots of things which previously would be challenging or need tweaking the DOM elements with JavaScript. This post will demonstrate what :has can be used for. Introduction Below are a few simple ex...
CSS,:HAS,:NOT,PSEUDO CLASS 2022-09-18 01:40:54
How expensive is a MySQL query?
Database access speed is always the bottle neck of many applications. Many application have large amount of data to search, retrieve and display nowadays. How do we improve the performance of our applications, how do we reduce the cost of database access? Apart from the design of database, the quality of the query is also one important factor to take care. But before that, we need to know how much network traffic a query will consume. Yunyang,Zhang from Nubee in Singapore did some research...
MySQL,Network traffic,Query 2013-04-09 05:13:33
Understanding abstract interface in Java
Have you read about an interface declaration as public abstract interface InterfaceName in Java? At the first glance, is it a weird declaration? Why should we declare an interface as abstract? For example, we may see below code in some projects: public abstract interface MyInterface { public void check(); public abstract boolean check(boolean really); } Actually here abstract is redundant, an interface is implicitly abstract, we no need to put an abstract in front of interface. But it do...
Java,abstract interface 2014-08-18 23:07:27
Turn browser into notepad with one line of code
This is the code shared by Jose on codewall. When you type data:text/html, into the address bar of the browser and press enter, the browser will turn into a notepad which you can edit. Why it works? This uses Data URI’s format and it tells the browser to render HTML. But contenteditable is a property of HTML5, so this can only work in the web browser which supports this property. Here are some interesting contents. Some people make some changes to the code encouraged by the ide...
HTML5, Browser editor 2013-01-30 04:20:54
How to choose JavaScript template engine?
With the increase of density of web front end development, AJAX and JSON are used more and more frequently, it's necessary to use many tags in front end development. You may have a JSON object as below: var data={ email: 'terry.li@gbin1.com, gender: 'male' } Then you need to organize the JSON data into page elements. var email, gender;email= ' ' + data.email+ '; gender= ' ' + data.gender + '; $('#contentwrapper‘).append(content).append(gender); The output is very simple: ...
JavaScript template engine,Template 2012-10-07 07:03:58
Do you really understand C? 21st International Obfuscated C Code Contest winning entries
The 21st International Obfuscated C Code Contest(IOCCC) officially launched the winning source code. IOCCC requires contestants to write the most creative and the most obfuscated C codes with the size limited to 4kb and less Work of each participant is impressive. The winners, including one French, one Korean, five Americans, one Belgian, one Israeli, one British, four Japanese and one Chinese. Here we list some codes: Best short program Seonghoon Kang from Korea- Decodes spelled out ...
C,Obsfucation contest 2012-10-25 12:26:55
JSP connect MySQL
To connect MySQL with Java Server Page(JSP). Some steps should be followed:Step 1: Download MySQL JDBC connector driver from the Internet. URL: http://dev.mysql.com/downloads/connector/j/Step 2: Put the jar file downloaded in Step 1 in the Tomcat common lib folder and add this jar file to the CLASSPATH so that the JSP page can find the specified class.Step 3: Create the JSP page with MySQL connection : Example is shown below: <% String driver="com.mysql.j...
MySQL,JSP,Connection,Driver,Download 2011-05-11 10:04:57
Java AbstractMethodError explained and demonstrated
According to Oracle Java API documentation, AbstractMethodError is a kind of runtime error where the application is having some incompatible changes which leads to a missing implementation of an abstract method. Below is the official description. Thrown when an application tries to call an abstract method. Normally, this error is caught by the compiler; this error can only occur at run time if the definition of some class has incompatibly changed since the currently executing method was last co...
JAVA,ABSTRACTMETHODERROR 2016-07-22 22:03:20
How does MySQL handle DROP TABLE
A few days ago, when executing DROP TABLE in MySQL, all processes including DDL and DML were hung until DROP TABLE was completed. I am confused about this phenomenon. I have reviewed the source codes of MySQL to check how MySQL internally handle DROP TABLE. When user trigger DROP TABLE command: ########################MySQL SERVER drop table######################## /* Sql_table.cc delete (drop) tables. */bool mysql_rm_table( ) /* Execute the drop of a normal or temporary...
MySQL,DROP TABLE 2012-09-24 11:34:05
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