Module Functor_test

module Functor_test: sig .. end

module Maybe: sig .. end

val get_age : string -> int option

val age_next_year : int Maybe.t -> int Maybe.t

val string_of_age : int option -> string

val stack : int Mystack.t

module Either: 
functor (Config : sig

type t 

end) -> sig .. end

module EitherString: Either(sig

type t = string 

end)

val get_age_either : string -> int EitherString.t

val age_next_year_either : int EitherString.t -> int EitherString.t

val string_of_age_either : int EitherString.t -> string