C++: dereference
整理自：
Recent Posts
C++: There are void pointers but no void references
整理自 Thinking in C++。
C++: pass-by-value / pass-by-pointer / pass-by-reference
老生常谈。整理自 Thinking in C++。
C++: A syntax constraint when defining variables in the statements of if, while and switch
整理自 Thinking in C++。
C++: declarations vs. definitions / extern
整理自 Thinking in C++。
C++: Including headers
整理自 Thinking in C++。
The compilation process
整理自 Thinking in C++。
R Dates
参考文献：
R: Generating All Pairwise Combinations of Strings
来自 R Cookbook。
R %any% operator
整理自 R Cookbook。