C++ smart pointer const correctness

Question

I have a few containers in a class, for example, vector or map which contain shared_ptr\'s to objects living on the heap.

For example

template 

        

Answer 1

shared_ptr and shared_ptr are not interchangable. It goes one way - shared_ptr is convertable to shared_ptr but not the reverse.

Observe:

// f.cpp

#include 

int main()
{
    using namespace std;

    shared_ptr pint(new int(4)); // normal shared_ptr
    shared_ptr pcint = pint; // shared_ptr from shared_ptr
    shared_ptr pint2 = pcint; // error! comment out to compile
}

compile via

cl /EHsc f.cpp

You can also overload a function based on a constness. You can combine to do these two facts to do what you want.

As for your second question, MyExample probably makes more sense than MyExample.