Working diary

Learn to use libcurl in Linux The objective of learning the libcurl is to implement a http access facility  in my crawler program for a s...

Here is a snippet collect of learning CMake tool, which replaces my autoconf tool sets. This is not a complete and clean version. A final ...

Here, some useful tips or unknowns of C/C++ programming are listed for further reference: 1. Stand alone curly brackets in code. Sometime...

Thread-local storage (TLS) is a programming method that is used to make static and global variables be local to a thread. The '"err...

The Factorial of a number usually denotes a very big order of magnitude, especially for the computer world. In order to approximate the magn...

In my experiment results, an random error happened quite frequently. But it is not show itself in each time's experiment. It makes me be...

Here's a list of different colors: 30 black foreground 31 red foreground 32 green foreground 33 brown foreground 34 blue foreground 35 m...

LD_PRELOAD is a fantastic method to debug the code or library. Basically, this just record other's work on the LD_PRELOAD and descript...

Gettimeofday??? Linux provides a 'gettimeofday()' function for users to check the epoch time. However, it gets the system's bes...

I used to try to find some ways to allocate memory in a function. When other functions invoke this function with a null pointer as a paramet...

The first usage of the double pointer is to allocate memory for a given pointer:          nlp = &res.readdir_res_u.list; while (d = r...

Actually, the usage of these kinds of types confused me for a quite long time, because I really don't know what's the differences be...

This is an revision concentrating two functions, sizeof() and strlen () . There are several manners for a programmer to define a string i...

Find this topic in DOCUMENT of GNU C library: libc http://www.gnu.org/software/libc/manual/    From page 633 Here I conclude some useful ti...

1. 作为参数， 用于函数改写指针参数。 2. 用来组建多维数组。       具体参见：  http://landerchan.blogspot.com/2008/11/dynamically-allocating-multidimensional.html

This is related international programming and GNU i18n. _() can be identified as the Macro of gettext() function. More details can be found ...