Flowdock
method

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Importance_1
Ruby latest stable (v1_9_3_392) - 0 notes - Class: Bignum
|(p1) public

<a href="/ruby/Set">Set</a> Union&#8212;Returns a new array by joining this array with other_array, removing duplicates.

   [ "a", "b", "c" ] | [ "c", "d", "a" ]
          #=> [ "a", "b", "c", "d" ]
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