package ppx_deriving

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The unit type

ppx_deriving.api
- Ppx_deriving
  - Arg
ppx_deriving.runtime
- Ppx_deriving_runtime
  - Arg
  - Array
  - ArrayLabels
  - Bigarray
    
    Array0
    
    Array1
    
    Array2
    
    Array3
    
    Genarray
  - Bool
  - Buffer
  - Bytes
  - BytesLabels
  - Callback
  - Char
  - Complex
  - Digest
  - Ephemeron
    
    GenHashTable
    
    MakeSeeded
    
    H
    
    K1
    
    Make
    
    H
    
    MakeSeeded
    
    H
    
    K2
    
    Make
    
    H1
    
    H2
    
    MakeSeeded
    
    H1
    
    H2
    
    Kn
    
    Make
    
    H
    
    MakeSeeded
    
    H
    
    S
    
    SeededS
  - Filename
  - Float
    
    Array
    
    ArrayLabels
  - Format
  - Fun
  - Gc
  - Genlex
  - Hashtbl
    
    HashedType
    
    Make
    
    H
    
    MakeSeeded
    
    H
    
    S
    
    SeededHashedType
    
    SeededS
  - Int
  - Int32
  - Int64
  - LargeFile
  - Lazy
  - Lexing
  - List
  - ListLabels
  - Map
    
    Make
    
    Ord
    
    OrderedType
    
    S
  - Marshal
  - MoreLabels
    
    Hashtbl
    
    Make
    
    H
    
    MakeSeeded
    
    H
    
    S
    
    SeededS
    
    Map
    
    Make
    
    Ord
    
    S
    
    Set
    
    Make
    
    Ord
    
    S
  - Nativeint
  - Obj
    
    Ephemeron
    
    Extension_constructor
  - Oo
  - Option
  - Parsing
  - Pervasives
  - Printexc
    
    Slot
  - Printf
  - Queue
  - Random
    
    State
  - Result
  - Scanf
    
    Scanning
  - Seq
  - Set
    
    Make
    
    Ord
    
    OrderedType
    
    S
  - Spacetime
    
    Series
    
    Snapshot
  - Stack
  - StdLabels
  - Stream
  - String
  - StringLabels
  - Sys
  - Uchar
  - Unit
  - Weak
    
    Make
    
    H
    
    S

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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 "()".