Go goto Statement

Go goto statement
Tags:

goto Statement

The goto statement jumps to a specified label.

Go does not support exception-handling syntax such as try, catch, and raise. To implement similar control flow, write code as follows.

package main

import (
    "fmt"
    "errors"
)

func main() {
    funcA()
}

func funcA() (string, error) {
    var err error
    filename := ""
    data := ""

    filename, err = GetFileName()
    if err != nil {
        fmt.Println(err)
        goto Done
    }

    data, err = ReadFile(filename)
    if err != nil {
        fmt.Println(err)
        goto Done
    }

    fmt.Println(data)

Done:
    return data, err
}

func GetFileName() (string, error) {
    return "sample.txt", nil
}

func ReadFile (filename string) (string, error) {
    return "Hello world!", errors.New("Can't read file")
}

Output when the sample.txt file does not exist:

Can't read file