You can create a trivial wrapper: https://godbolt.org/z/c5YeP6feG The usual issue with these sort of things is that they are not idiomatic (but then again,

You can create a trivial wrapper: https://godbolt.org/z/c5YeP6feG The usual issue with these sort of things is that they are not idiomatic (but then again, there is no single idiomatic C++). edit: std::reference_wrapper is of course the standard blessed way to do this, but still not idiomatic.