go/test/typeparam/issue47713.go

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// run
// Copyright 2021 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package main
import (
"encoding"
"fmt"
)
type Seralizable interface {
encoding.BinaryMarshaler
encoding.BinaryUnmarshaler
}
type SerDeString string
func (s *SerDeString) UnmarshalBinary(in []byte) error {
*s = SerDeString(in)
return nil
}
func (s SerDeString) MarshalBinary() ([]byte, error) {
return []byte(s), nil
}
type GenericSerializable[T Seralizable] struct {
Key string
Value T
}
func (g GenericSerializable[T]) Send() {
out, err := g.Value.MarshalBinary()
if err != nil {
panic("bad")
}
var newval SerDeString
newval.UnmarshalBinary(out)
fmt.Printf("Sent %s\n", newval)
}
func main() {
val := SerDeString("asdf")
x := GenericSerializable[*SerDeString]{
Value: &val,
}
x.Send()
}