# File lib/backports/2.0.0/enumerator/lazy.rb, line 114 def flat_map raise ArgumentError, "tried to call lazy flat_map without a block" unless block_given? Lazy.new(self) do |yielder, *values| result = yield(*values) if ary = Backports.is_array?(result) || (result.respond_to?(:each) && result.respond_to?(:force)) ary.each{|x| yielder << x } else yielder << result end end end