| // 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. | |
| package main | |
| import ( | |
| "fmt" | |
| ) | |
| type AddType interface { | |
| int | int64 | string | |
| } | |
| // Add can add numbers or strings | |
| func Add[T AddType](a, b T) T { | |
| return a + b | |
| } | |
| func main() { | |
| if got, want := Add(5, 3), 8; got != want { | |
| panic(fmt.Sprintf("got %d, want %d", got, want)) | |
| } | |
| if got, want := Add("ab", "cd"), "abcd"; got != want { | |
| panic(fmt.Sprintf("got %d, want %d", got, want)) | |
| } | |
| } |