C++ Coding Tips - Chapter1

C++ Coding Tips

Betta Jin
< betajin@hotmail.com>

April 15, 2002

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Chapter1. Coding Styles

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Section1. Let global function body in header file

• The 'inline' keyword:
  
  

  
  inline void Hello()
  {
      ...
  }
  - or -
  class CHello
  {
  public:
      void SayHello() ;
      ...
  } ;
  inline CHello::SayHello()
  {
      ...
  }
  

  
  
  
  Note: This style let the compiler know that the function should be only once
  instance ingnoring whether the function can indeed to be inlined, and
  make the linker happy to link correctly.
  
  
  
  
• The 'friend static inline' modifier:
  

  
  //  xxx.h
  #pragma once
  class CHello
  {
      friend static inline void SayHello(CHello * p)
      {
          ASSERT(p != 0) ;
          std::cout << p->m_val ;
          ...
      }
      ...
  protected:
      int m_val ;
  } ;
  //  main.cpp
  #include "xxx.h"
  int main()
  {
      CHello oHello ;
      SayHello(&oHello) ;
      return 0 ;
  }
  

  
  
  
  Note: Any function modified by friend is global.