lib/ffi-tk/widget/root.rb in ffi-tk-2010.08.23 vs lib/ffi-tk/widget/root.rb in ffi-tk-2018.02.20

@@ -1,4 +1,5 @@
+# frozen_string_literal: true
 module Tk
   class Root < Toplevel
     def initialize
       @tk_parent = nil
       @tk_pathname = '.'