Go - back on your feet - Recovring from Failure - panic, defer

Head First Go
楽天ブックス 紀伊國屋書店

開発環境

• macOS Mojave - Apple (OS)
• Emacs (Text Editor)
• Windows 10 Pro (OS)
• Visual Studio Code (Text Editor)
• Go (プログラミング言語)

Head First Go (Jay McGavren(著)、O'Reilly Media)のChapter 12(back on your feet - Recovering from Failure)、Exercise(369)の解答を求めてみる。

コード

package main

import "fmt"

func snack() {
 defer fmt.Println("Closing refrigerator")
 fmt.Println("Opening refrigerator")
 panic("refrigerator is empty")
}
func main() {
 snack()
 // Output
 // Opening refrigerator
 // Closing refrigerator
 // panic: refrigerator is empty

 // goroutine 1 [running]:
 // main.snack()
 // ...
 // main.main()
}

入出力結果(Bash、cmd.exe(コマンドプロンプト)、Terminal)

$ go run main.go 
Opening refrigerator
Closing refrigerator
panic: refrigerator is empty

goroutine 1 [running]:
main.snack()
 /.../go/Head First Go/ch12/main.go:8 +0xee
main.main()
 /.../go/Head First Go/ch12/main.go:11 +0x20
exit status 2
$