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Originally published on The Go Programming Language Blog, August 4 2010. http://blog.golang.org/2010/08/defer-panic-and-recover.html Update #2547 R=golang-dev, r, r CC=golang-dev https://golang.org/cl/5479053
54 lines
794 B
Go
54 lines
794 B
Go
// Copyright 2011 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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// This file contains the code snippets included in "Defer, Panic, an Recover."
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package main
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import (
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"fmt"
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"io"
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"os"
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)
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func a() {
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i := 0
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defer fmt.Println(i)
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i++
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return
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}
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// STOP OMIT
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func b() {
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for i := 0; i < 4; i++ {
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defer fmt.Print(i)
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}
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}
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// STOP OMIT
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func c() (i int) {
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defer func() { i++ }()
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return 1
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}
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// STOP OMIT
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// Intial version.
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func CopyFile(dstName, srcName string) (written int64, err error) {
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src, err := os.Open(srcName)
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if err != nil {
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return
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}
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dst, err := os.Create(dstName)
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if err != nil {
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return
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}
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written, err = io.Copy(dst, src)
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dst.Close()
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src.Close()
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return
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}
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// STOP OMIT
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