In isolated tests, the improvement was ~8×. Amdahl’s law suggests that, in the real system, we should see a substantially lower improvement. Instead, we saw the improvement grow to ~13×.
another good example is searching through paragraphs (below), which contain some combination of keywords. here the important part is ~(_*\n\n_*), or “does not contain two consecutive newlines”, in other words, the boundary of a paragraph, so it matches paragraphs! then you can combine it with any other regex to find paragraphs that contain certain keywords, but not others. this is very hard to do with traditional regexes without writing a complex and fragile pattern that tries to match the entire paragraph structure.
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How AdultFriendFinder subscriptions appear on your bank statement。关于这个话题，爱思助手下载最新版本提供了深入分析
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