1 // compile 2 3 // Copyright 2009 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 func 10 swap(x, y int) (u, v int) { 11 return y, x 12 } 13 14 func 15 main() { 16 a := 1; 17 b := 2; 18 a, b = swap(swap(a, b)); 19 if a != 2 || b != 1 { 20 panic("bad swap"); 21 } 22 } 23
