lib/veritas/algebra/join.rb in veritas-0.0.2 vs lib/veritas/algebra/join.rb in veritas-0.0.3

@@ -68,9 +68,10 @@
       #
       # @return [self]
       #
       # @api public
       def each(&block)
+        return to_enum unless block_given?
         index = build_index
 
         left.each do |tuple|
           right_tuples = index[join_tuple(tuple)]
           if right_tuples