How can I merge two sequences in clojure?

Asked 2012-09-30T03:15:15.767

What is an idiomatic way to merge (or retrieve the union of) two lists (or sequences) in Clojure?

(merge l1 l2)

doesn't seem to be the solution:

a=> (merge '(1 2 3) '(2 3 4))
((2 3 4) 1 2 3)

clojure sequences

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1 Answer

One way to get the union of two lists is to use union

Clojure> (into #{} (clojure.set/union '(1,2,3) '(3,4,5)))
#{1 2 3 4 5}

or if you want to get a list

(into '() (into #{} (clojure.set/union '(1,2,3) '(3,4,5))))
(5 4 3 2 1)

answered 2012-09-30T04:01:00.707