nanxing_stl/test.cpp

#include<iostream>
#include<typeinfo>
template<typename TYPE>
union ty
{
    int k,
    TYPE type
};

int main()
{
    ty<double> t;
    t.k=15;
    if(typeid(t)==typeid(double))
    {
        std::cout<<"int"<<t.TYPE<<std::endl;
    }
    int a[10]={0};
    for(auto& i : a)
    {
        i=1;
    }
    for(auto j :a)
    {
        std::cout<<j<<std::endl;
    }

}