Maintenance Ruby 3.4 gets fixes, but no new features. Switch to Ruby 4.0 →
instance method
Set#+
(::_Each[A]) -> self
+(enum)
lib/set.rb
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# File tmp/rubies/ruby-3.4.1/lib/set.rb, line 622
def |(enum)
dup.merge(enum)
end
Alias of #|
Returns a new set built by merging the set and the elements of the given enumerable object.
Example
Set[1, 2, 3] | Set[2, 4, 5] #=> #<Set: {1, 2, 3, 4, 5}> Set[1, 5, 'z'] | (1..6) #=> #<Set: {1, 5, "z", 2, 3, 4, 6}>