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  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

  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

  Significance and use of do{...}while(0)

In some Linux kernel and other open source codes, we can see some codes like below: do{ ... }while(0) This code snippet is not a loop, it seems there is no significance of using do...while this way, then why should we use it? In fact, the significance of do{...}while(0) is better than optimizing your code. After some research, we summarize some benefits of it. 1. Help define complex macro to avoid error #define DOSOMETHING()\ foo1();\ foo2(); The me...

   do{...}while(0), optimization     2012-10-21 21:13:22

  How to tell if this idea is a good idea.

Good Idea or Bad Idea?I’ve got an idea for a product. I’ve talked to some people. I know some people in the industry. I have been cold calling others. The idea is promising. The price point people have agreed with is about where I would like it to be. I’ve shown some mockups around and iterated on them. Now, I feel the need to start writing code because, well, I like writing code. And I’m comfortable writing code.But I see lean people.Steve Blank, Eric ...

   Idea,Good,Bad,Distinguish,Feature,Coding     2011-11-24 09:19:01

  It’s Not Too Late to Learn How to Code

Coding is sort of like a superpower; with it you can create things that millions of people see. You can change the way people behave, the way they think, and the way they interact with others. This is beyond awesome, but I’ve also met a lot of people that think that this ability is inaccessible to them. I’ve met a lot of “non-technical” people who seem to think that this superpower is only bestowed on those fortunate enough to have it come easily to them at a very early...

   Tips,Coding,Preparation,Interest     2011-10-17 11:26:38

  How big is sizeof structure?

First let's see the codes of a structure: struct node{ int a; int b; }; Question : What's sizeof(node)? The answer is very simple, on a 32 bit machine, an int will take 4 bytes and two ints will take 8 bytes. So sizeof(node) is 8. The answer for the above codes is 8, then how about the following structure: struct node{ char a; int b; }; Question : Then what's sizeof(node) now? int takes 4 bytes, char takes 1 bytes, is the answer 5? Now the answer may not be 5, on some mac...

   Data structure alignment, pack     2012-10-29 12:13:37

  Small team? Fix your life with a non-virtual assistant

Like many others, I tried “outsourcing my life” using a digital assistant. A year and a thousand bucks later, I’ve received one department store recommendation and an admittedly adequate spreadsheet of competitive research.I have since cancelled. Why didn’t it work for me?I think I just didn’t trust it/them/him/her (that I even have this ambiguity is indicative of the issues).Most of my mindless time-sinks involve at least a credit card number and are often a con...

   Work,Assistant,Team,Small,Individual,Get an assistant     2011-10-28 10:26:36

  Code coverage rate

When doing unit testing, the code coverage rate is often used as the criteria for measuring testing performance, even in some cases code coverage may be used to consider whether the testing task is completed or not. So testers need to spend much time on designing test cases which can cover as many codes as possible. There are advantages and disadvantages about using code coverage rate. First let's check what is code coverage rate: code coverage rate= the degree of code coverage in testing. There...

   Unit testing,Code coverage     2013-04-16 12:50:57

  Great code is written twice (or more)

The last couple of years more and more people have been moving towards Agile development. These techniques aren’t new, most we’re devised in the 80s or 90s. But finally these days programmers and (more importantly) business consultants, architects and clients have learned to love and embrace Agile development.Evolving requirementsIt has now become common knowledge that you can’t write down all the requirements before you start the project. These requirements h...

   Twice,Good code,Recoding,Agile,Evolvement     2011-11-01 00:36:35

  Programming: the benefits of taking a break

This post lists several benefits of taking a break during programming.You work smarter, not harder. Once, I worked really hard on a feature. For two weeks, 12 hours a day, I put in a lot of effort. After those two weeks, I took a break and came up with several ideas that made much of the work unnecessary.You think more clearly. Being tired has a similar effect as being drunk. At the end of a day, I often kid myself that I’ll just get this one thing finished quickly to have a fre...

   Programming,Break,Rest,Refresh,New idea     2011-11-08 08:50:45

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