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  • 工作学习 / IT技术讨论 / C++ language question -jami(jami); 2001-7-12 {129} (#129270@0)
    virtual bool Find(const tt_achar *name, const tt_achar *password) const ;

    What does the 'const' at the end of function mean?
    • that const means this member function does not change any member variable. -mrviceroy(杀人者Daniel是也); 2001-7-12 (#129280@0)
      • Thanks. you buddy. -jami(jami); 2001-7-12 (#129282@0)
    • run this code to see what the second const mean: -blaise(blaise); 2001-7-12 {362} (#129525@0)
      #include "stdio.h"
      class a
      {
      public:
      void f(){printf("non const version\n");};
      void f()const{printf("const version\n");};
      };

      void main()
      {
      a instanceofa;
      const a constantinstanceofa;
      instanceofa.f();
      constantinstanceofa.f();
      }

      in fact, besides meaning it should change nothing of the instance, it also stands for a selector.
      • Exellent, really exellet! -jami(jami); 2001-7-12 (#129580@0)
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