# File karel/tk_robot_world.rb, line 196 def remove_all_beepers(street, avenue) @beepers.synchronize do place = [street, avenue] # howMany = @beepers[place] # if howMany != nil and howMany != 0 @beepers.delete(place) if $window $window.delete_beeper(place) end @@beeper_control.signal # end end end