| // 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 p4 |
| |
| type Pair[T1 interface{ M() }, T2 ~int] struct { |
| f1 T1 |
| f2 T2 |
| } |
| |
| func NewPair[T1 interface{ M() }, T2 ~int](v1 T1, v2 T2) Pair[T1, T2] { |
| return Pair[T1, T2]{f1: v1, f2: v2} |
| } |
| |
| func (p Pair[X1, _]) First() X1 { |
| return p.f1 |
| } |
| |
| func (p Pair[_, X2]) Second() X2 { |
| return p.f2 |
| } |
| |
| // Deprecated: Use something else. |
| func Clone[S ~[]T, T any](s S) S { |
| return append(S(nil), s...) |
| } |
