Puming:
is this a good practice to use `ref in` with structs instead of traditional pointer syntax (which does not play well with UFCS though) ? Is there any perfomance implications with `ref in`? I tried that it does not seem to copy the parameter value,
A "ref" is equivalent to a pointer that can't be null, so performance is the same as using a pointer (so it's good for larger structs, but not good if your struct is tiny).
Bye, bearophile
