在命令行中进行集合交集与差集操作
本文介绍了如何使用comm工具在命令行中执行集合运算，包括交集和差集操作，同时指出了该工具需要输入文件排序且语法难记的局限性。
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The article critiques query-based compilers, which are currently popular, by highlighting potential pitfalls and challenges in their implementation. It aims to provide a balanced perspective on this trending approach to compiler design.
The statement suggests that software will significantly improve just before becoming obsolete or unnecessary. It presents a paradoxical observation about technological advancement and redundancy.
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