#rvalue ref

Rvalue ref and perfect forwarding

I’ve read few papers about && and I’m just curious if having:

void fnc_1(int&& p) { //... } void fnc(int&& r) { fnc_1(r);//am I suppose to/should I? call it like so:fnc_1(std::forward(r)) }

or just passing ‘r’ is enough?

Answer

fnc_1(r) won’t compile, because ris an lvalue, just like any other variable, regardless of type. Yes, that’s right, named rvalue references are lvalues, not…