Experimentation with handling heterogenous receivers with generics in Go

receiver-generics.go

// Online Go compiler to run Golang program online
// Print "Hello World!" message

package main
import "fmt"

// Type A, normal receiver, and pointer receiver
type A struct {
  s string
}
func (a A) Show() {
  fmt.Println(a.s)
}
func (a *A) String() string {
  return a.s
}

func show [P interface {*T; String() string}, T interface{Show()}] (x T) {
    x.Show()
    p := P(&x)
    fmt.Println(p.String())
}

func main() {
  a := A{s:"a"}
  show(a)
}