err to string golang code example

Example 1: interface to string golang

var x interface{} = "abc"
str := fmt.Sprintf("%v", x)

Example 2: go error handling

func doStuff() (int, error) {
}

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

Example 3: golang convert rune to string

r := rune('a')
fmt.Println(r, string(r))