Source file test/typeparam/adder.go

     1  // run
     2  
     3  // Copyright 2021 The Go Authors. All rights reserved.
     4  // Use of this source code is governed by a BSD-style
     5  // license that can be found in the LICENSE file.
     6  
     7  package main
     8  
     9  import (
    10  	"fmt"
    11  )
    12  
    13  type AddType interface {
    14  	int | int64 | string
    15  }
    16  
    17  // Add can add numbers or strings
    18  func Add[T AddType](a, b T) T {
    19  	return a + b
    20  }
    21  
    22  func main() {
    23  	if got, want := Add(5, 3), 8; got != want {
    24  		panic(fmt.Sprintf("got %d, want %d", got, want))
    25  	}
    26  	if got, want := Add("ab", "cd"), "abcd"; got != want {
    27  		panic(fmt.Sprintf("got %d, want %d", got, want))
    28  	}
    29  }
    30  

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