| // run | |
| // Copyright 2009 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 | |
| type Element interface { | |
| } | |
| type Vector struct { | |
| elem []Element; | |
| } | |
| func (v *Vector) At(i int) Element { | |
| return v.elem[i]; | |
| } | |
| type TStruct struct { | |
| name string; | |
| fields *Vector; | |
| } | |
| func (s *TStruct) field(i int) *TStruct { | |
| return s.fields.At(i).(*TStruct); | |
| } | |
| func main() { | |
| v := new(Vector); | |
| v.elem = make([]Element, 10); | |
| t := new(TStruct); | |
| t.name = "hi"; | |
| v.elem[0] = t; | |
| s := new(TStruct); | |
| s.name = "foo"; | |
| s.fields = v; | |
| if s.field(0).name != "hi" { | |
| panic("bad name") | |
| } | |
| } |