utahstreetlabs/clojure-solr — pull request #7 by travis (2013-03-06 19:33:14+00:00)
Title: Replace inefficient doc-to-hash function

Use the `create` method build into PersistentArrayMap make this
2-3x faster

There's another commit in here I thought would have been in core, but it probably got missed by some direct push shenanigans. In any case it's already in prod.