| // run -gcflags=-G=3 |
| |
| // 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)) |
| } |
| } |
