#include <iostream>
#include <typeinfo>
#include <vector>
#include <functional>
#include <algorithm>
 
using namespace std;
 
template< typename T>
void X() {
    cout<<typeid(T).name()<<endl;
}
 
 
struct A {
 
 
vector< function<void(void)> > callbacks;
 
void z() { 
    for( auto a : callbacks ) a();
}
 
template<typename T>
void M() {
    callbacks.push_back( [](){ X<T>();} );
}
 
};
 
int main() {
    A a;
    a.M<int>();
    a.M<double>();
    a.M<string>();
    a.z();
    return 0;
}

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