#范例1:局部变量名字拼错 actor = "Eric" p actr #出错!actor错拼成actr! #范例2:方法名字拼错 def abcde p "666" end abdef #出错!abcde错拼成abdef! #范例3:常量名字拼错(总之大字母开头的变量就对了) class Window_Menu end MENU_WIDTH = 200 WindowMenu.new #出错!Window_Menu错拼成WindowMenu! p MENU_WITH #出错!!MENU_WIDTH错拼成MENU_WITH!