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www.regexmagic.com
| | rdrr.io
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| | [AI summary] This document explains the use of regular expressions in R, covering both extended and Perl-like regular expressions with their syntax, metacharacters, and applications.
| | www.regexbuddy.com
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| | flapenguin.me
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| | Someone told me that I can't parse XML with regexes, and I just had to prove them wrong.
| | blog.nelhage.com
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| Back in January of 2012, Russ Cox posted an excellent blog post detailing how Google Code Search had worked, using a trigram index. By that point, I'd already implemented early versions of my own livegrep source-code search engine, using a different indexing approach that I developed independently, with input from a few friends. This post is my long-overdue writeup of how it works. Suffix Arrays A suffix array is a data structure used for full-text search and other applications, primarily these days in the field of bioinformatics.