Tuple represents a group of value that may be of a different type. When a tuple contains only one value, the tuple equal the value. Value in a tuple are surround by parenthesis each value is separated by a coma ,.

// example, not a valid code

var tuple = (1, "1", 1.0, 18\\31) // tuple is (int, string, float, fraction)

var tuple2 = (1) // <=> tuple2 = 1, tuple2 is (int) <=> tuple2 is int