ary | other_ary â new_ary
Instance Public methods
Set Union â Returns a new array by joining
ary with other_ary, excluding any duplicates and
preserving the order from the original array.
It compares elements using their hash and eql? methods for efficiency.
1 | [ "a", "b", "c" ] | [ "c", "d", "a" ] #=> [ "a", "b", "c", "d" ] |
See also #uniq.
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