import strutils var s = "a\0b\0c" echo s.replace("\0", "\\0") echo s.replace("\0", "") echo s.repr for c in s: write(stdout, c) write(stdout, "\n") proc stringToHex(s: string): string = result = "" for o,c in s: if o != 0: result.add ' ' result.add c.int.toHex(2) echo s.stringToHex