| // compile | |
| // 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 p | |
| type empty[T any] struct{} | |
| func (this *empty[T]) Next() (empty T, _ error) { | |
| return empty, nil | |
| } | |
| var _ = &empty[string]{} |