bronsa: I really like that to=

http://dev.clojure.org/jira/browse/CLJ-1843

ever since transducers came out, most of my collections operations have turned into function-returning-functions, even when not using transducers: (filter (only something)) where only returns a pred

would be extra useful if rather than using Util$EquivPred we had an EquivPred protocol wrapping that users could extend for fast equality checking on their custom types

but even just to= is useful by itself

Is there a way to extract that into a public interface without breaking bincompat

not necessary, Util$EquivPred is already public