Tuple

These will work similarly to how they do in Go and Python. While there is no tuple keyword, you can define tuples using the types used in them. For example:

int a, str b = (1, "Hi")
a == 1 // type int
b == "Hi" // type str

Tuples themselves cannot be none, though their values can be:

(str?, str?) result = ("Hello", none)
result == ("Hello", none) // type (str?, str?)

You can use this to return multiple values from a function, for example:

fn myFunc(int a, int b) -> (int, int) {
  int c = a + b
  int d = a - b

  return (c, d)
}

(int, int) vals = myFunc(2, 4)
vals == (6, -2)

You can also access individual elements of a tuple with their index:

(int, str, decimal) vals = (1, "hi", 2.5)
vals[0] == 1
vals[1] == "hi"
vals[2] == 2.5

You can "destructure" a tuple by assigning its values to another tuple:

(int, int) vals = (1, 2)
int a, int b = vals

a == 1
b == 2

You can also partially destructure a tuple:

(int, int, int) vals = (1, 2, 3)
int a, (int, int) b = vals

a == 1
b == (2, 3)

Tuple ​

Tuple