if there’s one thing i hope you take away from this, it’s that intersection and complement are genuinely useful operators that have been missing from regex engines for far too long. being able to describe what you want as a combination of properties, rather than cramming everything into one monolithic pattern, is a much more natural way to think about matching. and now you can do it with linear-time guarantees.
stack.push(cur);
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except Exception:
政绩观，说到底，就是“为了谁、依靠谁、我是谁”的立场问题。