There is a push in C++ towards Value Semantics. The compilers don't seem good enough for it yet. It's a problem with overuse of `auto` too, copies everywhere a

There is a push in C++ towards Value Semantics. The compilers don't seem good enough for it yet. It's a problem with overuse of `auto` too, copies everywhere and I'd wager a lot of them are unintended copies. But hey, your code compiled so it must be right!