#182: to_a

Author: yegor256

lib/factbase/terms/aggregates.rb

@@ -50,7 +50,7 @@ def sum(_fact, maps)
     maps.each do |m|
       vv = m[k.to_s]
       next if vv.nil?
-      vv = [vv] unless vv.respond_to?(:each)
+      vv = [vv] unless vv.respond_to?(:to_a)
       vv.each do |v|
         sum += v
       end