然后,在你的第一列空栏中使用不同4符号为4不同的信息类型做标记。
Then, use a simple system of symbols to mark off 4 different information types in the column space left in the margin.
其种类很多,但基本的理念是在变量名的开始添加一个标记以表示其类型(例如,所有无符号长型变量都以 ul 开头)。
There are lots of flavors of this, but the basic idea is that you put a tag at the beginning of a variable name saying what type it is. (So all unsigned long variables begin with ul, etc.)
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