Unit type
A unit type is a type which has only one value (unit literal, ` ()`). It is represented by a tuple with no elements. Its size is always zero, and it is guaranteed to not exist in the compiled code.
A unit type is a type which has only one value (unit literal, ` ()`). It is represented by a tuple with no elements. Its size is always zero, and it is guaranteed to not exist in the compiled code.