Gamedev/Game Loop
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both of these approaches use NFAs under the hood, which means O(m * n) matching. our approach is fundamentally different: we encode lookaround information directly in the automaton via derivatives, which gives us O(n) matching with a small constant. the trade-off is that we restrict lookarounds to a normalized form (?<=R1)R2(?=R3) where R1/R2/R3 themselves don’t contain lookarounds. the oracle-based approaches support more general nesting, but pay for it in the matching loop. one open question i have is how they handle memory for the oracle table - if you read a gigabyte of text, do you keep a gigabyte-sized table in memory for each lookaround in the pattern?，推荐阅读搜狗输入法获取更多信息
明代周官笔下的《观灯倡咏图》则表现了在月朗风清的庭院中，8位文人围坐一处的上元雅集场景。根据题跋可知，主人王成宪家藏有精致灯具，年年元宵之夜，他都邀同僚文士前来观灯联句。这成了明代文人将岁时节俗与艺术创作糅合在一起的雅集传统。