您也可以在第4步之前使用一个代码覆盖率工具，但是我宁愿您手动完成前面的步骤。
You could use a code coverage tool before step 4, but I prefer to do the preceding steps manually.
在电脑时代之前，记账人都是坐在桌子边，对着前面的两瓶墨水。
Before the age of computers, bookkeepers sat at their desks with two bottles of ink in front of them.
在文档后面的内容编译完成之前，可以先处理已编译好的文档前面的内容,从而实现非常快速、非常高效、非常节省地使用内存。
You can begin to work with the content at the beginning before you see the content at the end. This makes it very fast, very efficient, and very parsimonious with memory.
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