#unittest { name: "Loadat an index for string"; error: NONE; result: true; }; func main () { var s = "Hello World" var ret = s[6] == s[-5] and s[6] == "W" ret = ret and s[-1...0] == "dlroW olleH" ret = ret and s[0...4] == "Hello" ret = ret and s[-5...-1] == "World" return ret }