Set#intersect?

(::Set[A] | ::Enumerable[A]) -> bool

intersect?(set)

# File tmp/rubies/ruby-3.4.1/lib/set.rb, line 473
def intersect?(set)
  case set
  when Set
    if size < set.size
      any?(set)
    else
      set.any?(self)
    end
  when Enumerable
    set.any?(self)
  else
    raise ArgumentError, "value must be enumerable"
  end
end

Returns true if the set and the given enumerable have at least one element in common.

Example

Set[1, 2, 3].intersect? Set[4, 5]   #=> false
Set[1, 2, 3].intersect? Set[3, 4]   #=> true
Set[1, 2, 3].intersect? 4..5        #=> false
Set[1, 2, 3].intersect? [3, 4]      #=> true

See also #inspect #intersection #initialize_dup #join also in 4.1 · 4.0 · 3.3 · 3.2 · 3.1 · 3.0

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