mirror of
https://github.com/golang/go
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34 lines
532 B
Go
34 lines
532 B
Go
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// run
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// Copyright 2022 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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package main
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func main() {
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One[TextValue]()
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}
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func One[V Value]() { Two[Node[V]]() }
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func Two[V interface{ contentLen() int }]() {
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var v V
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v.contentLen()
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}
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type Value interface {
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Len() int
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}
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type Node[V Value] struct{}
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func (Node[V]) contentLen() int {
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var value V
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return value.Len()
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}
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type TextValue struct{}
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func (TextValue) Len() int { return 0 }
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