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otaznik-net/gist:f7a2f23429e0376adefaa713cce398b8

Created September 5, 2019 12:25
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gistfile1.txt
2.6.3 :001 > A = %w[a b c d e f]
=> ["a", "b", "c", "d", "e", "f"]
2.6.3 :002 > B = %w[1 2 3 4 5]
=> ["1", "2", "3", "4", "5"]
2.6.3 :003 > x = A.each_slice(2)
=> #<Enumerator: ["a", "b", "c", "d", "e", "f"]:each_slice(2)>
2.6.3 :004 > B.map { |i| [i, begin; x.next; rescue; end].compact}.flatten
=> ["1", "a", "b", "2", "c", "d", "3", "e", "f", "4", "5"]
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