# Module Unit

    module Unit: sig .. end

Unit values.

- Since 4.08

## The unit type

    type t = unit =

`|` | `()`

The unit type.

The constructor `()` is included here so that it has a path, but it is not intended to be used in user-defined data types.

    val equal : t -> t -> bool

`equal u1 u2` is `true`.

    val compare : t -> t -> int

`compare u1 u2` is `0`.

    val to_string : t -> string

`to_string b` is `"()"`.