codekingpro/portable-devtools

1// run2 3// Copyright 2022 The Go Authors. All rights reserved.4// Use of this source code is governed by a BSD-style5// license that can be found in the LICENSE file.6 7package main8 9import (10	"fmt"11)12 13type Printer[T ~string] struct {14	PrintFn func(T)15}16 17func Print[T ~string](s T) {18	fmt.Println(s)19}20 21func PrintWithPrinter[T ~string, S interface {22	~struct {23		ID       T24		PrintFn_ func(T)25	}26	PrintFn() func(T)27}](message T, obj S) {28	obj.PrintFn()(message)29}30 31type PrintShop[T ~string] struct {32	ID       T33	PrintFn_ func(T)34}35 36// Field accesses through type parameters are disabled37// until we have a more thorough understanding of the38// implications on the spec. See issue #51576.39// Use accessor method instead.40 41func (s PrintShop[T]) PrintFn() func(T) { return s.PrintFn_ }42 43func main() {44	PrintWithPrinter(45		"Hello, world.",46		PrintShop[string]{47			ID:       "fake",48			PrintFn_: Print[string],49		},50	)51}52