go issue48424 源码
golang issue48424 代码
文件路径：/test/typeparam/issue48424.go
// run
// 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.
// Smoke test for constraint literals with elided interface
// per issue #48424.
package main
func identity[T int](x T) T {
return x
}
func min[T int | string](x, y T) T {
if x < y {
return x
}
return y
}
func max[T ~int | ~float64](x, y T) T {
if x > y {
return x
}
return y
}
func main() {
if identity(1) != 1 {
panic("identity(1) failed")
}
if min(2, 3) != 2 {
panic("min(2, 3) failed")
}
if min("foo", "bar") != "bar" {
panic(`min("foo", "bar") failed`)
}
if max(2, 3) != 3 {
panic("max(2, 3) failed")
}
}
// Some random type parameter lists with elided interfaces.
type (
_[T struct{}] struct{}
_[M map[K]V, K comparable, V any] struct{}
_[_ interface{} | int] struct{}
)
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