In case of a non-nil error Close will not be executed and that is exactly
what you want. The power of defer becomes obvious with more code after the
defer which does not have to deal with any cleanup of previous steps
because of the defer.
Am Fr., 4. Jan. 2019 um 07:09 Uhr schrieb 伊藤和也 <kazya.ito.dr...@gmail.com>:
> In the first example, "ok" was not printed.
>
> func main() {
> if(true) {
> return
> }
> defer fmt.Println("ok")
> }
>
> So in the second example, is the Close function executed after an error
> occurs and returned.
>
> func main() {
> src, err := os.Open("text.txt")
> if err != nil {
> return
> }
> defer src.Close()
> }
>
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