map-invert should use transients and reduce-kv instead of reduce
Description
Two performance enhancements on clojure.set/map-invert:
1) Use reduce-kv to avoid realizing mapentry's from input map
2) Use transients to create the output map
Perf:
Patch: clj-1808-map-invert-should-use-reduce-kv-and-transient.patch
Screened by: Alex Miller
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Alex Miller
September 4, 2015, 4:42 PM
Would be nice to see a quick perf test that compared before/after times.
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