give sets a usable zero value

[KevinJoiner]

Proposed Changes

I don't need this change just curious on thoughts
Make the zero value useful.
https://go-proverbs.github.io/

[elffjs]

I think at this point we wrap in a struct and get some visibility/clarity benefits. What do you think?

[elffjs]

Here’s my problem with stuff like this I think. I think people for better or worse expect map-like behavior from sets. But here if you do

func main() {
	var s Set[string]
	addXpp(s)
	fmt.Println(s)
}

func addXpp(s Set) {
	s.Add("xpp")
}

That Add call is not visible to the caller.

https://go.dev/play/p/RWWUM26wfbx

[JamesReate]

i like it