Exception handling in C++ is absolutely zero-cost when no exception occurs. Look up the Itanium ABI. In Rust, even if no error occurs, the return value must sti

Exception handling in C++ is absolutely zero-cost when no exception occurs. Look up the Itanium ABI. In Rust, even if no error occurs, the return value must still be checked. Additionally, Move semantics were borrowed from C++, not the other way around.