diff
functionUsage: (diff a b)
Recursively compares a and b, returning a tuple of[things-only-in-a things-only-in-b things-in-both].Comparison rules:* For equal a and b, return [nil nil a].* Maps are subdiffed where keys match and values differ.* Sets are never subdiffed.* All sequential things are treated as associative collections by their indexes, with results returned as vectors.* Everything else (including strings!) is treated as an atom and compared for equality.
Added in Clojure version 1.3
Source