lib/alexandria/undo_manager.rb in alexandria-book-collection-manager-0.6.9 vs lib/alexandria/undo_manager.rb in alexandria-book-collection-manager-0.7.0

@@ -32,14 +32,14 @@
       (@within_undo ? @redo_actions : @undo_actions) << block
       notify
     end
 
     def can_undo?
-      @undo_actions.length > 0
+      !@undo_actions.empty?
     end
 
     def can_redo?
-      @redo_actions.length > 0
+      !@redo_actions.empty?
     end
 
     def undo!
       @within_undo = true
       begin