C++重載(關於const的重載)

標籤：

#include <iostream>#define DefaultSize 10using namespace std;template<typename T>class Grail{public:Grail(){data = new T[DefaultSize];for(int i=0;i<10;i++){data[i]=i;}} const T& operator[](int size)const{return data[size];}T& operator[](int size){return data[size];}private:T *data;};int main(){const Grail<int> G1;cout<<G1[3]<<endl;//調用const operator[]Grail<int> G2;cout<<G2[3]<<endl;//調用operator []return 0;}//編譯器能夠根據對象的const屬性區別對operator和const和非const版本的調用.

C++重載(關於const的重載)