On 23-12-2020, Ian Lance Taylor wrote: > On Wed, Dec 23, 2020 at 9:54 AM wilk <w...@flibuste.net> wrote: >> >> https://go2goplay.golang.org/p/fTW3hJYNgfU >> >> type Stringer interface { >> String() string >> } >> >> Print[T Stringer](s []T) >> >> Print(s []Stringer) >> >> Both forms works. >> How to prevent double way to do the same things that can be confusing ? > > Both forms work but they mean two different things. > > Print(s []Stringer) takes a slice of the type Stringer. > > Print[T Stringer](s []T) takes a slice of some type T, where T > implements Stringer. > > For example, if MyInt implements Stringer, and I have a []MyInt, then > I can call Print[T Stringer](s []T) but I can't call Print(s > []Stringer), because a []Stringer is not a []MyInt.
I understand the differences. But i'm affraid someone who never used Go before will use type parameters instead of interface which is more idiomatic i think. I mean it will be difficult to say, you could use type parameters but you should use interface, or something like that... I'm speaking about ease of learn Go2. -- wilk -- You received this message because you are subscribed to the Google Groups "golang-nuts" group. To unsubscribe from this group and stop receiving emails from it, send an email to golang-nuts+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/golang-nuts/rs08pp%24p8m%241%40ciao.gmane.io.
