package lru

v0.3.0 2019-04-09

Semantics cleanup.

Breaking:

• find drops ?promote and never changes the ordering.
• add drops ?trim and never drops bindings.
• size -> weight
• items -> size
• unadd -> pop
• F.S.fold and F.S.iter iterate in LRU order.
• F.M.fold and F.M.iter drop ?dir and always iterate in LRU order.

Other:

• add F.S.fold_k and F.S.iter_k

To fix client code:

• replace find ~promote:false with find;
• replace find and find ~promote:true with find and promote;
• replace add ~trim:false with add;
• replace add and add ~trim:true with add and trim;
• s/size/weight/g, s/items/size/g, s/unadd/pop/g;
• audit uses of fold and iter for order-sensitivity.

v0.2.0 2017-03-31

Breaking changes:

• resize no longer drops bindings if the new size pushes the queue over capacity.
• of_list has simpler semantics; dropped the cap parameter.

Other changes:

• Replace Lru.M.cache with more general Lru.memo.
• Queues with 0 initial capacity are legal.
• Add trim to shrink a queue to its capacity, as queues are no longer guaranteed to have size smaller than capacity.
• find gets the promote parameter, allowing queries that do not change the order.
• add gets the trim parameter, allowing insertions that do not drop old entries.

v0.1.1 2016-11-28

• Fix missing dep on psq in META.

v0.1.0 2016-11-22

First release.