If you think this sounds like an impossible situation , you are correct - it is practically impossible to accurately schedule any kind of code restructuring unless you have some way of assessing the risks 您也许认为这是一项不太可能完成的任务,您是对的精确地计划任何形式的代码重构实际上是不可能的,除非有某种可以对风险进行评估的方法。