regex
awk
regex | awk | |
---|---|---|
91 | 34 | |
3,355 | 1,923 | |
1.4% | - | |
8.9 | 8.3 | |
14 days ago | 2 days ago | |
Rust | C | |
Apache License 2.0 | GNU General Public License v3.0 or later |
Stars - the number of stars that a project has on GitHub. Growth - month over month growth in stars.
Activity is a relative number indicating how actively a project is being developed. Recent commits have higher weight than older ones.
For example, an activity of 9.0 indicates that a project is amongst the top 10% of the most actively developed projects that we are tracking.
regex
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Zed is now open source
The homepage has a benchmark that compares Zed's "insertion latency" to other editors, and this is the description:
> Open input.rs at the end of line 21 in rust-lang/regex. Type z 10 times, measure how long it takes for each z to display since hitting the z key.
Could someone clarify what that means? My interpretation of that was to go to https://github.com/rust-lang/regex/blob/master/regex-cli/arg... and start typing 'z' at the end of line 21, but that doesn't seem to make any sense. I guess that repo got refactored and those instructions are out of date?
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CryptoFlow: Building a secure and scalable system with Axum and SvelteKit - Part 3
We also used the avenue to sluggify the question title. We used regex to fish out and replace all occurrences of punctuation and symbol characters with an empty string and using the itertools crate, we joined the words back together into a single string, where each word is separated by a hyphen ("-").
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Command Line Rust is a great book
Command-Line Rust taught me how to use crates like clap, assert_cmd, and regex. I felt lost before because I didn't know about Rust's ecosystem--which is arguably as important as the language itself. Also, looking up and comparing libraries is a tiring task! blessed.rs is nice but Command-Line Rust really saved me from analysis paralysis.
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Common Rust Lifetime Misconceptions
burntsushi actually regrets making regex replace return a Cow: https://github.com/rust-lang/regex/issues/676#issuecomment-6.... I’m glad it does, and wish it took an impl Into> there, for the reasons discussed in the issue, but burntsushi has a lot more experience of the practical outcomes of this. Just something more to think about.
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Advent of Code 2023 is nigh
I'm not familiar with the AoC problem. You might be able to. But RegexSet doesn't give you match offsets.
You can drop down to regex-automata, which does let you do multi-regex search and it will tell you which patterns match[1]. The docs have an example of a simple lexer[2]. But... that will only give you non-overlapping matches.
You can drop down to an even lower level of abstraction and get multi-pattern overlapping matches[3], but it's awkward. The comment there explains that I had initially tried to provide a higher level API for it, but was unsure of what the semantics should be. Getting the starting position in particular is a bit of a wrinkle.
[1]: https://docs.rs/regex-automata/latest/regex_automata/meta/in...
[2]: https://docs.rs/regex-automata/latest/regex_automata/meta/st...
[3]: https://github.com/rust-lang/regex/blob/837fd85e79fac2a4ea64...
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Text Showdown: Gap Buffers vs. Ropes
It’s not quite that simple, but folks are working on it.
https://github.com/rust-lang/regex/issues/425#issuecomment-1...
https://github.com/helix-editor/helix/pull/211#issuecomment-...
- Please ask questions (rust-lang/regex)
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ScripterC - Rust-lang set
Dependencies used: - regex - unicode_reader - rust decimal - tokio
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Regex Engine Internals as a Library
https://www.cs.princeton.edu/courses/archive/fall19/cos226/l... and https://kean.blog/post/lets-build-regex are excellent introductions to implementing a (very) simplified regex engine: construct a nondetermistic finite state automaton for the regex, then perform a graph search on the resulting digraph; if the vertex corresponding to your end state is reachable, you have a match.
I think this exercise is valuable for anyone writing regexes to not only understand that there's less magic than one might think, but also to visualize a bunch of balls bouncing along an NFA - that bug you inevitably hit in production due to catastrophic backtracking now takes on a physical meaning!
Separately re: the OP, https://github.com/rust-lang/regex/issues/822 (and specifically BurntSushi's comment at the very end of the issue) adds really useful context to the paragraph in the OP about niche APIs: https://blog.burntsushi.net/regex-internals/#problem-request... - searching with multiple regexes simultaneously against a text is both incredibly complex and incredibly useful, and I can't wait to see what the community comes up with for this pattern!
awk
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Csvlens: Command line CSV file viewer. Like less but made for CSV
Awk now supports a `--csv` flag for processing csv's. https://github.com/onetrueawk/awk/blob/master/README.md
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Perl first commit: a “replacement” for Awk and sed
Right, "the one true awk" corresponds to a book written in 1988, very explicity. https://github.com/onetrueawk/awk
You were the one that that said POSIX awk to begin with, I was using your terms.
As far as shitting on the GMU tools, I don't think I've seen someone do that for over 20 years.
This is not a productive conversation. You can live life however you want
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[2022 all days][Awk] AoC in 101 lines of Awk
I also wrote a small program to benchmark and check the solutions across different Awk implementations (see the image). I use the macos system awk (which is pretty close to https://github.com/onetrueawk/awk if I'm not mistaken) as a reference (the first column), so all solutions had to work with that.
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Where is keyword behavior defined?
A simpler Yacc grammar is awk/awkgram.y.
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-🎄- 2022 Day 11 Solutions -🎄-
Neat, this is now the third year I'm using awk and still learning new tricks. (I'm using awk as the reference, so I don't use gnu extensions.)
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Capitalizing words in awk
I did this in nawk, which doesn't support extended regular expressions. If instead you're using gawk, which does, check out \b for word boundaries in extended regular expressions. The [^a-z][a-z] approach you showed consumes the prior character.
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Coffee with Brian Kernighan – Computerphile [video]
BWK’s commit and test files (mentioned in the video)
https://github.com/onetrueawk/awk/commit/d3a19e6f2533d479841...
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ลอง awk ภาษาไทยใช้ได้แล้วแต่ต้องใช้ branch ชื่อ unicode-support
git clone -b unicode-support https://github.com/onetrueawk/awk.git
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anon has a wholesome family
This is dumb as fuck. Brian Kernighan of K&R (The C Programming Language) is 80 and he’s still more intelligent than any of you retards. Mf just submitted a patch to awk a couple months ago https://github.com/onetrueawk/awk
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Unix legend Brian Kernighan, who is the "k" in "awk" and is 80 years old, keeps fixing things. He has added Unicode support to awk, but he couldn't figure out how use git, so he just emailed his changes to the current maintainer
The Unicode branch: https://github.com/onetrueawk/awk/tree/unicode-support
What are some alternatives?
re2 - modern regular expression syntax everywhere with a painless upgrade path [Moved to: https://github.com/SonOfLilit/kleenexp]
frawk - an efficient awk-like language
node-re2 - node.js bindings for RE2: fast, safe alternative to backtracking regular expression engines.
tectonic - A modernized, complete, self-contained TeX/LaTeX engine, powered by XeTeX and TeXLive.
zig - General-purpose programming language and toolchain for maintaining robust, optimal, and reusable software.
goawk - A POSIX-compliant AWK interpreter written in Go, with CSV support
ngrams - (Read-only) Generate n-grams
awesome-c - A curated list of awesome C frameworks, libraries, resources and other shiny things. Inspired by all the other awesome-... projects out there.
regex-benchmark - It's just a simple regex benchmark of different programming languages.
AwkUnicodeSplit - An awk(1) fragment for reassembling Unicode characters after a split()
whatlang-rs - Natural language detection library for Rust. Try demo online: https://whatlang.org/
calendar - print upcoming events