I think requires/concepts do a few things: - document an interface (without making you use virtual fns or any weird tricks) - allow you to use SFINAE without

I think requires/concepts do a few things: - document an interface (without making you use virtual fns or any weird tricks) - allow you to use SFINAE without more weird tricks So yeah, this amounts to enforcing that your class can do certain things... but that’s hugely helpful!