module Memo: Memo
val general : ?cache_size_bound:int -> ('a -> 'b) -> 'a -> 'b
Returns memoized version of any function with a single argument. The
default caching policy is to remember everything for the lifetime
of the returned closure, but one may specify an upper bound on
cache size. Whenever a cache entry must be forgotten in order to
obey this bound, we pick the least-recently-used one.
val unit : (unit -> 'a) -> unit -> 'a
efficient special case for argument type unit