Memoization code -- not re-entrant!
val general : ?hashable:'a Core_kernel__.Std_internal.Hashtbl.Hashable.t ‑> ?cache_size_bound:Core_kernel__.Import.int ‑> ('a ‑> 'b) ‑> 'a ‑> 'bReturns 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.
Raises an exception if cache_size_bound is nonpositive.
val unit : (Core_kernel__.Import.unit ‑> 'a) ‑> Core_kernel__.Import.unit ‑> 'aefficient special case for argument type unit