app/services/tables/distribution.rb

@@ -17,9 +17,7 @@ module Tables
     end
 
     def discomfort
-      @tables.map do |table|
-        local_discomfort(table)
-      end.sum
+      @tables.map(&:discomfort).sum
     end
 
     def inspect
@@ -28,7 +26,7 @@ module Tables
 
     def pretty_print
       @tables.map.with_index do |table, i|
-        "Table #{i + 1} (#{table.count} ppl): (#{local_discomfort(table)}) #{table.map(&:full_name).join(', ')}"
+        "Table #{i + 1} (#{table.count} ppl): (#{table.discomfort}) #{table.map(&:full_name).join(', ')}"
       end.join("\n")
     end
 
@@ -55,11 +53,5 @@ module Tables
         arrangement.update!(discomfort:)
       end
     end
-
-    private
-
-    def local_discomfort(table)
-      table.discomfort ||= DiscomfortCalculator.new(table).calculate
-    end
   end
 end

app/services/tables/table.rb

@@ -1,15 +1,20 @@
 module Tables
   class Table < Array
-    attr_accessor :discomfort
+    attr_writer :discomfort
+
     def initialize(*args)
       super
       reset
     end
 
     def reset
-      original_discomfort = discomfort
+      original_discomfort = @discomfort
       @discomfort = nil
       original_discomfort
     end
+
+    def discomfort
+      @discomfort ||= DiscomfortCalculator.new(self).calculate
+    end
   end
 end