PadLeft

Pads the given string from the start with spaces until the resulting string reaches the given length.

• Use fmt.Sprintf() wih an appropriate format specifier to return the formatted value.

import "fmt"

func PadLeft(s string, l int) string {
    f := "%" + strconv.Itoa(l) + "v"
    return fmt.Sprintf(f, s)
}

PadLeft("go", 8) // "      go"