run this code to see what the second const mean:

blaise (blaise)
#include "stdio.h"
class a
void f(){printf("non const version\n");};
void f()const{printf("const version\n");};

void main()
a instanceofa;
const a constantinstanceofa;

in fact, besides meaning it should change nothing of the instance, it also stands for a selector.
2001-7-12 -04:00
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