two lines buffer mechanism 两行缓存机制
It describes with emphasis the key arithmetic of mapping buffer lines in the process of generation of drill bore column.
重点对钻孔柱状图成图过程中绘制缓冲线的关键算法做了详细的叙述。
Once all the lines have been processed, the buffer will have been completely updated and all the relevant assignment operators aligned to a suitable column.
当所有行处理完成之后，将完全更新缓存，并且所有相关的赋值操作符都对齐到一个合适的列。
The Uniq function is declared to take a range, so it will only be called once, even when invoked on a range of lines in the buffer.
Uniq函数被声明为接受一个范围，因此只能调用一次，即使在缓冲区内的一个行范围上调用时。
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