Robuta

https://www.open-std.org/jtc1/sc22/wg21/docs/papers/2005/n1862.html Rvalue Reference Recommendations for Chapter 27 rvalue reference recommendations chapter 27 https://www.open-std.org/jtc1/sc22/wg21/docs/papers/2014/n3982.html Rvalue reference overloads for optional rvalue reference overloads optional