Is conversion allowed with std::vector's template constructor taking iterators?

Question

In the C++11 standard, Section 23.3.6.2 [vector.cons], the following is said:

   template 
     vector(InputIterator first, InputI         


        

Answer 1

You can even go further. This code works fine too :

#include 
#include 

struct A {
    int n;
    int v;
    A(int n_, int v_ = 0) : n(n_), v(v_) {}
};

int main() {
    int arr[] = {1,2,3,4,5,6,7,8,9,10};
    std::vector A_vec(arr, arr+10);

    for( std::vector::iterator it=A_vec.begin(); it!=A_vec.end(); ++it )
        std::cout<< it->n <<" ";
    std::cout<

As you have noted in the standard, in §23.3.6.2 :

Makes only N calls to the copy constructor of T

=> This constructor iterates on each element and use the copy constructor so, as long as you have a working copy constructor, it should work fine on every compilers.