Class std::Tuple
Implements Iterable
Instances of the Tuple class are fixedlength, immutable sequences of values.
Tuple instances are constructed using the comma operator. By convention, tuple expressions are often placed within parentheses:
(1, 2, "x")  3tuple with items 1, 2 and "x" 1, 2, "x"  Equivalent to above, but without parentheses
There is special syntax for constructing an empty tuple and a singleitem tuple:
()  An empty tuple (True,)  A singleitem tuple
See also: Tuple types in Introduction to Alore Type System.
Tuple methods
 length() as Int
 Return the length of the tuple.
 iterator() as Iterator<Object>
 Return an iterator object that can be used to sequentially iterate over the tuple items, starting from the first item.
Tuple operations
Tuple objects support the following operations:
 tuple[n]

Access tuple items with the indexing
operator. The index n must an integer, and it can be negative.
Raise the IndexError exception if the index is not within bounds.
var a = ("a", 1, True) a[0]  "a" a[1]  True
 tuple == x, tuple < x
 Tuples can be compared for equality and for lexicographic order. All the basic comparison operators are supported: ==, !=, <, <=, > and >=. Tuples can be compared with arrays, and an array and a tuple with the same items are equivalent.
 x, y, z = tuple

Tuple objects can be expanded in a multiassignment or a variable
definition. The number of items
in the lvalue must equal the length of the tuple.
var a = (1, 3, "x") var x, y, z = a  x gets 1, y gets 3, z gets "x"
 for x in tuple
 Tuple items can be enumerated with a for loop, starting from the first item.
 x in tuple
 Test whether a tuple contains a specific object. Return a boolean value. The test is not recursive, i.e., tuples within tuples are not searched.
 Str(tuple)
 Return a string representation of the tuple contents.
 Hash(tuple)
 Return the hash value of a tuple.