Avoiding const_cast when calling std::set::find

Question

Is there any good way to obviate the const_cast below, while keeping const correctness?

Without const_cast the code below doesn\'t compile.

Answer 1

Yes.

In C++14, you can use your own comparator that declares int const* as transparent. This would enable the template overload of find() that can compare keys against arbitrary types. See this related SO question. And here's Jonathan Wakely's explanation.