Why not write two functions? On Friday, 17 July 2020 at 21:36:38 UTC+2 jrh...@gmail.com wrote:
> I was playing around with trying to use generics to de-interface-ify a > fuzzer implementation, and I ran into some stumbling blocks. > > is it possible to perform type switches? It seems the answer is currently > no (example <https://go2goplay.golang.org/p/p3PRvsXAuXD>, design doc > reference > <https://go.googlesource.com/proposal/+/refs/heads/master/design/go2draft-type-parameters.md#identifying-the-matched-predeclared-type>). > > Maybe there's a better way to handle the following? > > type Primitive interface { > type int, string > } > > func Randomize(type F Primitive)(f F, r *rand.Rand) F { > switch v := (interface{})(f).(type) { > case string: > return fmt.Sprintf("%s--%d", v, r.Int()) > case int: > return v + r.Int() > default: > panic(fmt.Sprintf("I don't know about type %T!\n", v)) > } > } > > func main() { > r := rand.New(rand.NewSource(1)) > fmt.Println(Randomize(int)(1, r)) > } > > Thanks, > Josh > > -- 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/c4c0c308-bd05-48eb-aa60-bcbcc2932399n%40googlegroups.com.
