std::vector<int &> hello;
If you try to save references of int together
"error C2528: 'pointer' : pointer to reference is illegal"
An error appears.
I'm not good at using a pointer, so I'm going to use it as a reference, but why is this error coming up? Do I have to use a pointer?
c++ stl vector
The type of the container element must be able to assign a value. However, once a reference is initialized, it is not possible to refer to other values A compilation error occurs.
From C++11, you can save the reference by using std::reference_wrapper.
The example below saves the reference to a vector to enable the vector's elements.
#include <iostream>
#include <vector>
class MyClass{
public:
int x;
MyClass(int y): x(y) {}
void func(){
std::cout<<"I am func" << std::endl;
}
};
int main(){
std::vector<std::reference_wrapper<MyClass>> vec;
MyClass obj1(2);
MyClass &obj_ref1=std::ref(obj1);
vec.push_back(obj_ref1);
for( auto ob : vec)
{
std::remove_reference<MyClass&>::type(ob).func();
std::cout<<std::remove_reference<MyClass&>::type(ob).x<< std::endl;
}
}
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