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

I learnt something that seems to confuse people quite often: using SFINAE is OK, but I can't use:

std::is_rvalue_reference::value

The only way it works as I want is

!std::is_lvalue_reference::value

The reason is: I need my function to receive an rvalue, not an rvalue reference. A function conditionally enabled with std::is_rvalue_reference::value will not receive an rvalue, but rather receives an rvalue reference.