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container/list: add package example
R=golang-dev, minux.ma CC=golang-dev https://golang.org/cl/7306078
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src/pkg/container/list/example_test.go
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30
src/pkg/container/list/example_test.go
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// Copyright 2013 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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package list_test
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import (
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"container/list"
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"fmt"
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)
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func Example() {
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// Create a new list and put some numbers in it.
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l := list.New()
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e4 := l.PushBack(4)
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e1 := l.PushFront(1)
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l.InsertBefore(3, e4)
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l.InsertAfter(2, e1)
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// Iterate through list and and print its contents.
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for e := l.Front(); e != nil; e = e.Next() {
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fmt.Println(e.Value)
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}
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// Output:
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// 1
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// 2
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// 3
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// 4
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}
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