1.If you have no tests and cruddy code, then you should probably throw it away and start again because you'll have to do all the testing, as opposed to if you have cruddy code with many tests.
如果你有一堆乱七代码且又没有测试,那么你最好是扔掉它们从头开始,否则你
新做所有
测试。反
,如果你有一堆乱七
代码同时还有很多测试
话,情况
不一样了。