The non-generic form _only_ accepts an argument of type []Stringer. If you have a []Foo, where Foo implements Stringer, that's not good enough. You will have to construct a []Stringer explicitly, and copy each Foo into that []Stringer. This is a fairly common gotcha with Go, where folks expect the implicit conversion to happen.
OTOH, the generic form will accept []Foo directly, since Foo satisfies the Stringer constraint. - Dave On Wed, Jun 17, 2020 at 1:20 AM Christophe Meessen < christophe.mees...@gmail.com> wrote: > Reading the document "Type parameters - Draft desing" of June 16, 2020 ( > https://go.googlesource.com/proposal/+/refs/heads/master/design/go2draft-type-parameters.md), > I wonder if these two following function definitions are not equivalent and > thus interchangeable > > func Stringify(type T Stringer)(s []T) (ret []string) > > func Stringify(s []Stringer) (ret []string) > > If the constrain is an interface, wouldn’t it be the same as to use the > interface as type ? How would it be different ? > > -- > 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/3b758827-2d14-4769-bf94-95cf60a06b1bo%40googlegroups.com > <https://groups.google.com/d/msgid/golang-nuts/3b758827-2d14-4769-bf94-95cf60a06b1bo%40googlegroups.com?utm_medium=email&utm_source=footer> > . > -- 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/CAMx%2Br7Vc9pLY63qJg1ek4ZrYq8YMyJFOLwzN5aLA6T8nho16Ww%40mail.gmail.com.
