#unittest { name: "String interpolation."; error: NONE; result: true; }; func main() { var a = 10; var b = "World"; var c = false; // string interpolation var s1 = "Hello \(b) is 5 == \(a)? \(c)"; // static string var s2 = "Hello World is 5 == 10? false"; return s1 == s2; }