| 1 | // Copyright 2014 The Go Authors. All rights reserved. |
|---|---|
| 2 | // Use of this source code is governed by a BSD-style |
| 3 | // license that can be found in the LICENSE file. |
| 4 | |
| 5 | // Enumeration with an offset. |
| 6 | // Also includes a duplicate. |
| 7 | |
| 8 | package main |
| 9 | |
| 10 | import "fmt" |
| 11 | |
| 12 | type Number int |
| 13 | |
| 14 | const ( |
| 15 | _ Number = iota |
| 16 | One |
| 17 | Two |
| 18 | Three |
| 19 | AnotherOne = One // Duplicate; note that AnotherOne doesn't appear below. |
| 20 | ) |
| 21 | |
| 22 | func main() { |
| 23 | ck(One, "One") |
| 24 | ck(Two, "Two") |
| 25 | ck(Three, "Three") |
| 26 | ck(AnotherOne, "One") |
| 27 | ck(127, "Number(127)") |
| 28 | } |
| 29 | |
| 30 | func ck(num Number, str string) { |
| 31 | if fmt.Sprint(num) != str { |
| 32 | panic("number.go: " + str) |
| 33 | } |
| 34 | } |
| 35 |