mirror of
https://github.com/golang/go
synced 2024-09-04 15:34:21 +00:00
e24977d231
The next CL will remove the -G flag, effectively hard-coding it to its current default (-G=3). Change-Id: Ib4743b529206928f9f1cca9fdb19989728327831 Reviewed-on: https://go-review.googlesource.com/c/go/+/388534 Reviewed-by: Keith Randall <khr@golang.org> Trust: Matthew Dempsky <mdempsky@google.com> Run-TryBot: Matthew Dempsky <mdempsky@google.com> TryBot-Result: Gopher Robot <gobot@golang.org>
33 lines
618 B
Go
33 lines
618 B
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.
|
|
|
|
package main
|
|
|
|
import "fmt"
|
|
|
|
func fact[T interface{ ~int | ~int64 | ~float64 }](n T) T {
|
|
if n == 1 {
|
|
return 1
|
|
}
|
|
return n * fact(n-1)
|
|
}
|
|
|
|
func main() {
|
|
const want = 120
|
|
|
|
if got := fact(5); got != want {
|
|
panic(fmt.Sprintf("got %d, want %d", got, want))
|
|
}
|
|
|
|
if got := fact[int64](5); got != want {
|
|
panic(fmt.Sprintf("got %d, want %d", got, want))
|
|
}
|
|
|
|
if got := fact(5.0); got != want {
|
|
panic(fmt.Sprintf("got %f, want %f", got, want))
|
|
}
|
|
}
|