explicit checks stable_finished_theory/stable_command allow parallel asynchronous command transactions;
tuned;
(* ========================================================================= *)
(* SUPPORT FOR LAZY EVALUATION *)
(* Copyright (c) 2007 Joe Hurd, distributed under the BSD License *)
(* ========================================================================= *)
signature Lazy =
sig
type 'a lazy
val quickly : 'a -> 'a lazy
val delay : (unit -> 'a) -> 'a lazy
val force : 'a lazy -> 'a
val memoize : (unit -> 'a) -> unit -> 'a
end