container/list: add package example

R=golang-dev, minux.ma
CC=golang-dev
https://golang.org/cl/7306078

diff --git a/src/pkg/container/list/example_test.go b/src/pkg/container/list/example_test.go
new file mode 100644 (file)
index 0000000..7361212
--- /dev/null
+++ b/src/pkg/container/list/example_test.go
@@ -0,0 +1,30 @@
+// Copyright 2013 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 list_test
+
+import (
+       "container/list"
+       "fmt"
+)
+
+func Example() {
+       // Create a new list and put some numbers in it.
+       l := list.New()
+       e4 := l.PushBack(4)
+       e1 := l.PushFront(1)
+       l.InsertBefore(3, e4)
+       l.InsertAfter(2, e1)
+
+       // Iterate through list and and print its contents.
+       for e := l.Front(); e != nil; e = e.Next() {
+               fmt.Println(e.Value)
+       }
+
+       // Output:
+       // 1
+       // 2
+       // 3
+       // 4
+}