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(* ========================================================================= *)
(* SUPPORT FOR LAZY EVALUATION *)
(* Copyright (c) 2007 Joe Leslie-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
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