File I/O
File Descriptor I/O Functions open and openat creat close lseek read write dup and dup2 fcntl File Sharing /dev/fd This blog is a note of APUE. File Descriptor To the... Read more »
Common Terminal Commands on OS X
Directory dirs Search and Replace find grep time time This blog only lists SOME arguments of a command. Directory dirs dirs [-clpv] [+N | -N] Display the list of currently... Read more »
RE in Python
Some Special charaters Some module contents It is important to note that most regular expression operations are available as module-level functions and RegexObject methods. The functions are shortcuts that don’t... Read more »
Common String Operations in C++
split split The code below splits a given string s by any character in delim: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15... Read more »
Compare Efficiency among if-else, ?:, and min()/max()
We often need to calculate the maximum/minimum value of a set of numbers. if-else, ?: and min()/max() are three methods we usually use to achieve the goal. In this post,... Read more »
Singleton in Python
Version 1 Version 2 Version 3 Version 1 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22... Read more »
Class Creation in Python
1. Class 2. Class instances 3.The BIF class type(name, bases, dict) 4. Special method names 1. object.__new__(cls[, …]) 2. object.__init__(self[, …]) 5. Customizeing class creation (Python 2.7) __metaclass__ 6. Customizing... Read more »