re2
regex-automata
re2 | regex-automata | |
---|---|---|
1 | 5 | |
29 | 349 | |
- | - | |
3.8 | 0.0 | |
5 months ago | 10 months ago | |
C++ | Rust | |
GNU General Public License v3.0 or later | The Unlicense |
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re2
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Just how widely accepted is tidyr/dplyr these days?
Perl is fast for regex matching, but there is more to processing text than just regex and with parLapply you can parallelize the processing. You can also parallelize re2 and basically destroy Perl if your regex contains |.
regex-automata
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regex 1.8.0 released (no-op escapes allowed, (?<name>re) syntax added)
I believe you're the second person to tell me they were confused by this, so there are probably several others confused but didn't say anything. I've added a warning to the top of regex-automata's README.
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After years of work and discussion, `once_cell` has been merged into `std` and stabilized
For anyone following along at home, we're having a very helpful discussion about the implementation I posted in my sibling comment here: https://github.com/BurntSushi/regex-automata/issues/30
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Pomsky 0.8 released: A powerful and modern regular expression language
My current technique only gets applied to alternations of simple literals. But the idea is generalizeable and I speculate that it is actually impactful to generalize it.
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Rust: A Critical Retrospective
(I could use '_ => {}' instead of 'None' to save a few more.)
I do find the 'if let' variant to be a bit easier to read. It's optimizing for a particular and somewhat common case, so it does of course overlap with 'match'. But I don't find this particular overlap to be too bad. It's usually pretty clear when to use one vs the other.
But like I said, I could live without 'if let'. It is not a major quality of life enhancement to me. Neither will its impending extensions. i.e., 'if let pattern = foo && some_booolean_condition {'.
[1]: https://github.com/BurntSushi/regex-automata/blob/fbae906823...
[2]: https://github.com/BurntSushi/regex-automata/blob/fbae906823...
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Memchr 2.4 now has an implementation of substring search on arbitrary bytes
(The work on regex-automata 0.2 has been underway for over a year now.](https://github.com/BurntSushi/regex-automata/tree/ag/work) There's a lot done, but still a lot more to go. Once that's done, regex proper should be pretty close to a thin layer that glues regex-syntax, regex-automata, memchr and aho-corasick together. I don't currently expect regex to grow any more dependencies than that. And as it is, aho-corasick and memchr are both optional dependencies. Right now, regex-syntax is the only required dependency, but regex-automata will be added to that list.
What are some alternatives?
regexp2 - A full-featured regex engine in pure Go based on the .NET engine
pomsky - A new, portable, regular expression language
re2js - RE2JS is the JavaScript port of RE2, a regular expression engine that provides linear time matching
regex - An implementation of regular expressions for Rust. This implementation uses finite automata and guarantees linear time matching on all inputs.
poorman - A poor man's dependency free grammar of data manipulation
grex - A command-line tool and Rust library with Python bindings for generating regular expressions from user-provided test cases
RE-flex - A high-performance C++ regex library and lexical analyzer generator with Unicode support. Extends Flex++ with Unicode support, indent/dedent anchors, lazy quantifiers, functions for lex and syntax error reporting and more. Seamlessly integrates with Bison and other parsers.
rust-memchr - Optimized string search routines for Rust.
hyperscan - High-performance regular expression matching library
biscuit - Biscuit research OS
REFramework - Scripting platform, modding framework and VR support for all RE Engine games
sliceslice-rs - A fast implementation of single-pattern substring search using SIMD acceleration.