How to remove constness of const_iterator?

Question

As an extension to this question Are const_iterators faster?, I have another question on const_iterators. How to remove constness of a const_iterator

Answer 1

you can convert your const iterator value pointer to a non const value pointer and use it directly something like this

    vector v;                                                                                                         
v.push_back(0);
v.push_back(1);
v.push_back(2);
v.push_back(2);
vector::const_iterator ci = v.begin() + 2;
cout << *ci << endl;
*const_cast(&(*ci)) = 7;
cout << *ci << endl;