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  4 types of programmers

Not every one who writes code is a programmer. Programmers are people who live with programming. There are 4 types of programmers: scientist, coder, expert and artisan.Scientist, they are more like mathematicians rather than programmers. They invented various theories, algorithms and terminologies. Proofs and calculations in textbooks are all from these people. Moreover other programmers more or less benefit from their work. Sometimes one paper published by them can change the way of thinking of...

   Programmer,Coder,Expert     2013-07-13 09:19:03

  JavaScript efficiency catch up

JavaScript is a very flexible language, we can write JavaScript code freely with various styles, different kinds of codes will have different execution efficiency. Here we summarize some tips we get from our development. Efficiency of JavaScript itself JavaScript has execution context chain, closures, prototype inheritance, eval etc. It brings us some magic features, but it also introduces the performance issue, if we don't use them properly, it will affect the codes execution efficiency. 1. Glo...

   JavaScript,efficiency,event delegation,eval     2013-04-02 04:08:46

  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

  Work is not challenging is just an excuse in interview?

Usually when an interviewer asks the interviewee why he/she wants to change his/her job, one answer may be "My current job is not challenging, I want a more challenging job.". The interviewer may tend to think that there are always challenges everywhere and why the interviewee indulges himself/herself without putting much effort on his/her work.   Here I want to say something to our interviewers. Work challenging is not equal to personal indulgence. The work is challenging which is an...

   Job,Interview,Challenge,Excuse     2012-04-18 07:03:12

  Difference between Beijing and Silicon Valley on innovation

The fundamental difference between Beijing and Silicon Valley is not the sky color, but the fact that on one side the young people are talking about buying a new house, a new car and getting married, while on the other side young people are talking about how to change the world. Now and then we can read from the newspaper or the Internet that a Silicon Valley company is valued over 1 billion US dollars. Also we can see many famous US IT brands on the Internet such as Google, Facebook,Twitter, Am...

   China,Silicon Valley,Innovation, Comparison     2013-06-24 03:09:54

  <=> operator in MySQL

Have you ever seen "<=>" in a SQL query while using MySQL? Does it mean less and equals to and greater than? Actually if you consider it as the union of <= and =>, great, you are close to it. This is one form of equal operator in MySQL, it has the similar meaning to the = operator with some subtle difference. According to MySQL documentation, <=> is NULL-safe equal. This operator performs an equality comparison like the = operator, but returns 1 rather than NULL if both operand...

   MySQL,NULL safe,<=>     2014-03-24 06:23:22

  10 Object Oriented Design principles Java programmer should know

Object Oriented Design Principles are core of OOPS programming but I have seen most of Java programmer chasing design patterns like Singleton pattern , Decorator pattern or Observer pattern but not putting enough attention on Object oriented analysis and design or following these design principles. I have regularly seen Java programmers and developers of various experience level who either doesn't heard about these OOPS and SOLID design principle or simply doesn't know what benefits a particular...

   OOP design,Principle,Java     2012-03-14 13:51:38

  Understanding Twitter Bootstrap 3

On 27, July, Twitter Bootstrap 3 RC 1 was released, if there are no major bugs found in this release, then it will be the final released Twitter Bootstrap 3 with some minor changes. What changes does Bootstrap 3 have compared to Bootstrap 2? After checking the documents, we can find that there are mainly 3 changes. Embrace flat design In Bootstrap 3, it begins to embrace flat design. First from the official webpage of Bootstrap 3, we can find elements are flat designed. Also, all buttons have no...

   Bootstrap 3,Change,Bootstrap 2     2013-08-05 07:06:22

  3 preconditions for Facebook to enter China

It's well known that Mark Zuckerberg has a big interest in the Chinese market. Recently, the founder of Facebook visited China to attend a development forum held by the Chinese government. Along with the trip, he also paid a trip to some famous places in Beijing such as The Great Wall. He even did a morning run in front of the Tian'an men Square, the symbol of China.  In past few years, Zuckerberg also learned Chinese and read Chinese books, showed his love to the Chinese culture....

   FACEBOOK,CHINA,MARK ZUCKERBERG     2016-03-25 01:32:51

  How can you test if your VPN is working properly?

Installing a VPN on your device is one of the essential steps you need to take in order to have a safe and pleasant online experience. It good functioning is in your best interest and this is why you need to make sure that your VPN is working properly. Unfortunately, a lot of problems can occur if it turns out that your VPN is not up to the task and that it has some leaks.  Can a leak really occur? To answer you most directly – Yes! Yes, it can! Unfortunately, no system is perfect an...

   VPN     2020-09-17 06:53:19

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