mirror of
https://github.com/golang/go
synced 2024-11-18 12:14:42 -07:00
34 lines
532 B
Go
34 lines
532 B
Go
|
// run
|
||
|
|
||
|
// Copyright 2022 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
|
||
|
|
||
|
func main() {
|
||
|
One[TextValue]()
|
||
|
}
|
||
|
|
||
|
func One[V Value]() { Two[Node[V]]() }
|
||
|
|
||
|
func Two[V interface{ contentLen() int }]() {
|
||
|
var v V
|
||
|
v.contentLen()
|
||
|
}
|
||
|
|
||
|
type Value interface {
|
||
|
Len() int
|
||
|
}
|
||
|
|
||
|
type Node[V Value] struct{}
|
||
|
|
||
|
func (Node[V]) contentLen() int {
|
||
|
var value V
|
||
|
return value.Len()
|
||
|
}
|
||
|
|
||
|
type TextValue struct{}
|
||
|
|
||
|
func (TextValue) Len() int { return 0 }
|