Variables

Variables are handles to data of a type.

Syntax:

name, name = expression

A name and value are required. The type is based on the right-hand side of the assignment:

• If it is a literal, the type is explicit in the syntax of the literal.
• If it is a function call, the return type of the function is used.
• If it is the name of another variable, the value is copied.

The left-hand side can optionally be a list of names, which are used to destructure a tuple on the right-hand side. This is useful for extracting fields from function returns, for example.

If an assignment is the last statement in a block, the assigned value is considered the effective value of the block.