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テンプレートを使う場合と使わない場合のメンバ関数の関数ポインタ

Posted at

よく忘れるので、メモ

#include <iostream>

//普通の関数ポインタを使う場合
template<class CLS,class... ARGS>
void call1(void(CLS::*func)(ARGS...),CLS* cls,ARGS... args){
    (cls->*func)(args...);
}

//テンプレートを使う場合
template<class FUNC,class CLS,class... ARGS>
void call2(FUNC func,CLS* cls,ARGS... args){
    (cls->*func)(args...);
}


class TEST{
    public:
        void test_func(int a,int b){
            std::cout<<"test func "<<a<<" "<<b<<std::endl;
        }
};


int main(){
    TEST t;
    call1(&TEST::test_func,&t,1,2);
    call2(&TEST::test_func,&t,3,4);

    return 0;
}
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