now ‘it was in there’ isn’t actually very useful in the real world. you toss the algorithm at 4TB of logs and it tells you “yes it’s somewhere in there” - cool, then what. what matters in the real world is where the matches are, and what is around those matches. for that we mark positions during matching, not after. also quite simple to grasp:
上片从“去年元夜时”说起，“花市”既指卖花赏花的集市，也指元宵佳节处处花团锦簇，入夜大街小巷“竞陈灯烛，光彩争华，直至达旦”。词人并不是要写元宵的盛况，而是要烘托情侣约会的氛围，以引出即将出场的主角：“月上柳梢头，人约黄昏后。”“花市灯如昼”不过是点缀背景，“黄昏后”的朦胧之时，“柳梢头”的幽静之地，才是约会的好去处，因而光线由明而暗，环境由喧而幽。“人约黄昏后”点到为止，留给我们无穷的遐想：他们一见面是深情相拥，还是倾诉衷肠？是两人独处，还是随人观灯？花市、彩灯、明月、柳梢，热闹而又幽静，喜气而又温馨，爱情甜蜜得令人心醉。
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Say, your bank would internally work with arbitrary floating point numbers for money, but they only charge you during transfers the rounded value up to a cent. If you transfer 0.009€ to another account, this account would get 0.009€, but you account would get charged 0.00€. Infinite money glitch irl.
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