module Choices:sig..end
val time : unit -> unit Async.Std.Deferred.t
val delayed : float -> 'a -> 'a Async.Std.Deferred.t
val def_all : unit -> unit Async.Std.Deferred.t
val def_all_unit : unit -> unit Async.Std.Deferred.t
val def_any : unit -> unit Async.Std.Deferred.t
val def_any_unit : unit -> unit Async.Std.Deferred.t
val def_both : unit -> unit Async.Std.Deferred.t
val main : unit -> unit Async.Std.Deferred.t