Yeah, pretty much every integer enum I write has `UNKNOWN` or `INVALID` as the zero value. It adds either a `case` or a `default` to every switch and a clause o

Yeah, pretty much every integer enum I write has `UNKNOWN` or `INVALID` as the zero value. It adds either a `case` or a `default` to every switch and a clause or a `_` to every `match`, but it saves my ass even in non-security-sensitive settings.