C++ styles

1. An entity (function, class, etc) only has one compact responsibility.

    design small class, and seperate incompact functions.

 

2. Use 'const' as more as possible.

    for example:

         class Paras{ static const int threshold = 200; static const int count; } /*place it in .h file */ const int Paras:: count = 10; /*place it in .cpp file*/ 

 

3. Always initialize variables.

   For example:

         char path[MAX_LEN];path[0] = '/0';or char path[MAX_PATH] = {"/0"}

4. derivation  is  'is-a'  relation, which means 'words-like-a'

 

5. hide overloading functions.

    For example

         class A { virtual void foo(int); virtual void foo(int, int); void foo();}class B : public A { /* using A::foo; */ virtual void foo(int);}B b;b.foo() //errorb.foo(1, 2) //error

   The method foo(int, int) and foo() are hidden after derivation.  The solution is to add one sentence 'using A::foo' into B (just remove the comment tag in above example ) .