return error golang code example

Example 1: golang create error

// simple string-based error
err1 := errors.New("math: square root of negative number")

Example 2: errors golang

err := errors.New("emit macho dwarf: elf header corrupted")
	if err != nil {
		fmt.Print(err)
	}

Example 3: go error handling

func doStuff() (int, error) {
}

func main() {
    result, err := doStuff()
    if err != nil {
        // handle error
    } else {
        // all is good, use result
    }
}