mozilla/rust — pull request #10211 by ktt3ja (2013-11-01 00:24:14+00:00)
Title: Add lru_cache to libextra

There's an open issue ([Issue #4988](https://github.com/mozilla/rust/issues/4988?source=cc)) for adding an LRU Cache to the standard library. I'm new to this so I hope I didn't miss anything I'm supposed to do.