Reason · Reason lets you write simple, fast and quality type safe code while leveraging both the JavaScript & OCaml ecosystems.

sig
 module Scanning :
  sig
   type in_channel
   type scanbuf = Scanf.Scanning.in_channel
   val stdin : Scanf.Scanning.in_channel
   type file_name = string
   val open_in : Scanf.Scanning.file_name -> Scanf.Scanning.in_channel
   val open_in_bin : Scanf.Scanning.file_name -> Scanf.Scanning.in_channel
   val close_in : Scanf.Scanning.in_channel -> unit
   val from_file : Scanf.Scanning.file_name -> Scanf.Scanning.in_channel
   val from_file_bin : string -> Scanf.Scanning.in_channel
   val from_string : string -> Scanf.Scanning.in_channel
   val from_function : (unit -> char) -> Scanf.Scanning.in_channel
   val from_channel : Stdlib.in_channel -> Scanf.Scanning.in_channel
   val end_of_input : Scanf.Scanning.in_channel -> bool
   val beginning_of_input : Scanf.Scanning.in_channel -> bool
   val name_of_input : Scanf.Scanning.in_channel -> string
  end
 type ('a, 'b, 'c, 'd) scanner =
   ('a, Scanf.Scanning.in_channel, 'b, 'c, 'a -> 'd, 'd) Stdlib.format6 ->
   'c
 type ('a, 'b, 'c, 'd) scanner_opt =
   ('a, Scanf.Scanning.in_channel, 'b, 'c, 'a -> 'd option, 'd)
   Stdlib.format6 -> 'c
 exception Scan_failure of string
 val bscanf : Scanf.Scanning.in_channel -> ('a, 'b, 'c, 'd) Scanf.scanner
 val bscanf_opt :
  Scanf.Scanning.in_channel -> ('a, 'b, 'c, 'd) Scanf.scanner_opt
 val sscanf : string -> ('a, 'b, 'c, 'd) Scanf.scanner
 val sscanf_opt : string -> ('a, 'b, 'c, 'd) Scanf.scanner_opt
 val scanf : ('a, 'b, 'c, 'd) Scanf.scanner
 val scanf_opt : ('a, 'b, 'c, 'd) Scanf.scanner_opt
 val kscanf :
  Scanf.Scanning.in_channel ->
  (Scanf.Scanning.in_channel -> exn -> 'd) ->
  ('a, 'b, 'c, 'd) Scanf.scanner
 val ksscanf :
  string ->
  (Scanf.Scanning.in_channel -> exn -> 'd) ->
  ('a, 'b, 'c, 'd) Scanf.scanner
 val bscanf_format :
  Scanf.Scanning.in_channel ->
  ('a, 'b, 'c, 'd, 'e, 'f) Stdlib.format6 ->
  (('a, 'b, 'c, 'd, 'e, 'f) Stdlib.format6 -> 'g) -> 'g
 val sscanf_format :
  string ->
  ('a, 'b, 'c, 'd, 'e, 'f) Stdlib.format6 ->
  (('a, 'b, 'c, 'd, 'e, 'f) Stdlib.format6 -> 'g) -> 'g
 val format_from_string :
  string ->
  ('a, 'b, 'c, 'd, 'e, 'f) Stdlib.format6 ->
  ('a, 'b, 'c, 'd, 'e, 'f) Stdlib.format6
 val unescaped : string -> string
end