How to make template rvalue reference parameter ONLY bind to rvalue reference?

Question

I\'m writing a network library and use move semantics heavily to handle ownership for file descriptors. One of my class wishes to receive file descriptor wrappers of other k

Answer 1

For lvalue references, T is deduced to be an lvalue reference, and for rvalue references, T is deduced to be a non-reference.

So if the function binds to a rvalue reference, what is seen at the end by the compiler for a certain type T is:

std::is_rvalue_reference::value

and not

std::is_rvalue_reference::value