A blog of my programming experience
In Konqueror, you can type gg: to perform a Google search. wp: to go to Wikipedia. I’ve added an entry for JUPAS, i.e. http://web.jupas.edu.hk:6118/jupas/bin/jo.progSearch.ProgSearch?type=detail&course_code=\{@} then I can type like jupas:6963 in the address bar to go to the page directly.
In the past, the major obstacle for me to change to Google Chrome is its inability to view PDFs directly inside the browser. Now, with that plugin installed, I’m finally able to view PDFs inside Google Chrome. Here’s a screenshot:
Debian comes with three flavours: stable, testing and unstable. Stable is rock solid, it never breaks, and is never updated; unstable is updated often, breaks often, and is fixed often. Testing is between the extremes. Stable contains packages which are years old,…
Programming languages with built-in garbage collection (GC) is often praised as no memory leaks, less error-prone, etc but I don’t disagree with this. This article brings you some facts of GC that is never mentioned by advertisements. GC automatically frees resources that…
Exception specifications should be very familiar to Java programmers. Here is an example: class MyException extends Exception { } class Foo { void abc(int x) throws MyException { if (x < 0) throw new MyException(); } void def() throws MyException { abc(3);…
As a library programmer, the decision between using templates or using inheritance may be a difficult decision. Everyone wants their libraries to be generic. Which pattern is better? Template pattern Templates allow you to write code that does the same thing on…
I dislike Java very much, mainly due to its lack of features: Object model Objects and values In C++, a primitive variable is an object, a class variable is an object, a pointer variable is an object, everything that has an address,…
UN*X systems are commonly known for their stability, reliability and robustness. However, you can make these systems unusable by running the following program. Here’s the pseudocode: while true fork Fork is a system call in UN*X to copy the running process. If…
Have you ever experienced sudden crash of an application on Linux? Most people have. The most common reason of a crash is segmentation fault but this is not the subject of this article. Here, I’ll talk about how Linux does when memory…
In the past, people used Adobe Flash to create animation on web. These animation are distributed in .swf format and referenced by the HTML. However, there is a huge problem: none of the open-source free players plays Flash well now so it’s…