well, I hate to beat a dead horse, but here's a one-liner (ruby): (map1.keys | m... | Hacker News

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		markov_twain on Feb 2, 2013 \| parent \| context \| favorite \| on: Crafting Code in Clojure well, I hate to beat a dead horse, but here's a one-liner (ruby): `(map1.keys \| map2.keys).map(&:to_s).sort.join(", ").instance_eval { empty? ? "<none>" : self }`

Luyt on Feb 2, 2013 [–]

My one-liner:

a = {"fred": 4, "wilma": 8} b = {"t-shirt": 6, "fred": 0}

print ", ".join(sorted(set(a).union(b))) or "<none>"

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