A least-recently-used in-memory cache.
Adding more than a configurable maximum number of items to a LRUCache object causes the least-recently-used item to be purged.
LRUCache = (require 'lru-cache').LRUCache max_item_count = 3 c = new LRUCache max_item_count c.put 'A', 1 c.put 'B', 2 c.put 'C', 3 c.put 'D', 4 # A purged; least to most used: BCD c.get 'B' # least to most used: CDB c.put 'E', 5 # C purged; least to most used: DBE c.remove 'B' # least to most used: DE
Run unit tests with:
Based on a doubly-linked list. Operations are O(1).
Copyright (c) 2011 Fictorial LLC.
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