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  Most Pressed Keys and Programming Syntaxes

I switch between programming languages quite a bit; I often wondered what happens when having to deal with the different syntaxes, does the syntax allow you to be more expressive or faster at coding in one language or another. I dont really know about that; but what I do know what keys are pressed when writing with different programming languages. This might be something interesting for people who are deciding to select a programming language might look into, here is a post on the...

   Keyboard,Programming language,Hottest ke     2011-09-23 13:10:10

  If a programming language was a boat…

我是受最近的一个论坛帖子启发，他的想法至今仍让我感到奇特。Turing(图灵)Turing绝对是一个双人皮划艇(感谢评论里的提醒)。它很小。人力的。它通常被当作初学者的”船“。è€...

   Programming,Turing,C,C#     2011-06-24 01:07:42

  Multiple Constructor in PHP

See code:class MultipleConstructor {private $info = ”;function __construct() {$argv = func_get_args();switch( func_num_args() ){default:case 1:self::__construct1($argv[0]);break;case 2:self::__construct2( $argv[0], $argv[1] );break;}}function __construct1($value) {$this->info = $value;}function __construct2($value, $value2) {$this->info = $value . ” ” . $value2;}function get() {return $this->info;}}$a = new MultipleConstructor(‘Value 1′);echo $a->get();$...

   PHP,Constructor,Multiple constructor     2011-10-01 02:28:22

  Save QWidget as image

Qt library is an excellent GUI library for C++ programmers developed by Nokia and now is an open source project. Often, we may use QPainter to draw strings, lines or images on a QWidget. We can override the QWidget's paintEvent() method when we want to use QPianter object to draw something on a QWidget. If we want to save the items drawn on QWidget as image for later reference, what can we do? We can save a QWidget as an image. Here is the code for achieving this: QPixmap pixmap(this->size())...

   Qt,C++,QWidget,Image     2012-08-19 12:01:18

  Create trigger in MySQL

To create trigger in MySQL, the syntax is :CREATE [DEFINER = { user | CURRENT_USER }] TRIGGER trigger_name trigger_time trigger_event ON tbl_name FOR EACH ROW trigger_bodyOne example is :DELIMITER %%DROP TRIGGER IF EXISTS delete_commentCREATE TRIGGER delete_comment AFTER DELETE ON file_generate_infoFOR EACH ROW BEGIN DELETE FROM article_comment WHERE article_id=OLD.article_id;END%%The whole create trigger statement should be complete statement but not many separate com...

   MySQL,Trigger,Dilimiter,phpMyAdmin     2011-04-20 15:35:30

  What programming languages should I learn?

Since I started this blog, I have gotten quite a few emails asking me “What programming languages do you recommend for X?” I often finding myself writing something along the lines ofI would honestly recommend python. Something about me being biased because I know and love it.  Usually say something about the competing technology with a back handed insult. Also if they are starting out I would recommend a language that enforces better OO (Object Orientated) practic...

   programming language,Popularity,Java,Tre     2011-09-23 13:11:57

  5 Ways to Boost MySQL Scalability

There are a lot of scalability challenges we see with clients over and over. The list could easily include 20, 50 or even 100 items, but we shortened it down to the biggest five issues we see.1. Tune those queriesBy far the biggest bang for your buck is query optimization. Queries can be functionally correct and meet business requirements without being stress tested for high traffic and high load. This is why we often see clients with growing pains, and scalability challenges as their site becom...

   MySQL,Scalability,Methods,Implementation,Practice     2011-10-18 02:57:27

  Python: copying a list the right way

new = old[:] Those proficient in Python know what the previous line do. It copies the list old into new. This is confusing for beginners and should be avoided. Sadly the [:] notation is widely used, probably because most Python programmers don’t know a better way of copying lists.A little bit of pythonic theoryFirst we need to understand how Python manages objects & variables. Python doesn’t have variables like C. In C a variable is not just a name, it ...

   Python,List,Copy,Reference,[:],list()     2011-11-07 08:04:48

  How to harness company’s resource?

As an employee, it is no doubt that we should spare no effort to contribute to your employer since it pays us salary. But at the same time, we should also consider how to utilise the company's resource to enrich ourselves. After all, only if we become more competent and brilliant, the company can benefit more from us, and this will be a definitely win-win situation. In this post, I will illuminate how to take advantage of company's "hardware" and "software" resource. (1) “Ha...

       2017-08-11 05:18:07

  Don't Overload #nil?

There’s a popular post on Hacker News about writing confident code by, among other things, overloading Object#nil? and returning “null objects” instead of nil itself.DO NOT DO THIS.In Ruby, all objects (except nil itself) coerce to the boolean value true. Your object will be nil and true at the same time. Bad things will happen. Your coworkers will cry. Sad people from around the world will ask bewildering questions on your mailing list.Here’s what happen...

   Ruby,#nil,Overload,Object     2011-11-10 10:50:22

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