Flowdock
method

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

Set Union—Returns a new array by joining this array with other_ary, removing duplicates.

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