nearley
ruby
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nearley | ruby | |
---|---|---|
3 | 182 | |
3,548 | 21,526 | |
- | 0.8% | |
0.0 | 10.0 | |
8 months ago | 4 days ago | |
JavaScript | Ruby | |
MIT License | 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.
nearley
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Writing a C compiler in 500 lines of Python
While I suspect I would learn more writing a tokenizer and parsing logic myself I find grammars much easier to read and maintain.
ANTLR is pretty good and is supported across several languages and something I had previously used for some quick Elasticsearch query syntax munging in Python. It also means you can often start from an already existing grammar.
The JS version of ANTLR didn't seem to work for me so for the SQL/JSONPath stuff ended up using the Moo lever and Nearly parser which was rather pleasant. https://nearley.js.org
- Parser generators vs. handwritten parsers: surveying major languages in 2021
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Applicative Parsing
Parsers in nearley.js [1] are written in a very readable EBNF-like DSL; then they get desugared down to a JS file that's a lot like your snippet.
[1] https://github.com/kach/nearley
ruby
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🚀Secure Rails Authentication: A Step-by-Step Guide to Sign Up, Log In, and Log Out
To create a new Rails app, you should have Ruby and Rails installed on your machine. You can find how to install Ruby on your local machine using the Ruby docs. You can install Rails by running the following command:
- Ruby – Implement Chilled Strings
- Ruby 3.3
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Tests Everywhere - Ruby
Ruby testing with RSpec
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YJIT Is the Most Memory-Efficient Ruby JIT
Not parent poster and do not have production YJIT experience. =)
My guess is that you would monitor `RubyVM::YJIT.runtime_stats[:code_region_size]` and/or `RubyVM::YJIT.runtime_stats[:code_gc_count]` so that you can get a feel for a reasonable value for your application, as well as know whether or not the "code GC" is running frequently.
https://github.com/ruby/ruby/blob/master/doc/yjit/yjit.md#pe...
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M:N thread scheduler for Ractors has been merged!
Link to the commit
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GitHub and Developer Ecosystem Control
Part of the major userbase pull in GitHub revolves around hosting a considerable number of popular projects including Angular, React, Kubernetes, cpython, Ruby, tensorflow, and well even the software that powers this site Forem.
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Undocumented Features of GitHub
Hold option and click on the “collapse file” button in the Files view of a commit or pull request, and it will collapse all the files.
Select text in a comment, issue, or pull request description and press r—the selected text (including markdown formatting) will get pre-populated as a markdown block quote reply in the next comment box.
Add .patch or .diff to any pull request URL if you want to see a plain-text diff of the pull request (e.g. maybe you want to quickly `curl ... | git apply -` an unmerged pull request into a local copy of the repo without trying to add and fetch the git remote that the pull request is from).
There are lots of keyboard shortcuts. For example, / to jump to the file finder.
Not so much a secret but more like a hiding in plain sight: when looking at a commit GitHub will show you the earliest and latest tag (i.e. release) that includes the commit. For example, this commit[1] first appeared in v3_2_0_preview3.
[1]: https://github.com/ruby/ruby/commit/892f350a7db4d2cc99c5061d...
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Ruby Outperforms C: Breaking the Catch-22
The title is misleading, just like other commenters mentioned. Just check how much indirection "rb_iv_get()" has to make (at the end, it will call [1], which isn't "a light" call). Now, check generated JIT code (in a blog post) for the same action where JIT knows how to shave off unnecessary indirection.
We are comparing apples and oranges here.
[1] https://github.com/ruby/ruby/blob/b635a66e957e4dd3fed83ef1d7...
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How to Check If a Variable Is Defined with Ruby's Defined? Keyword
I'm not sure why, but all the source values are listed here: https://github.com/ruby/ruby/blob/1cc700907d3ad3368272488a6f...
Maybe someone knowledgeable in the underpinnings of Ruby will explain why "class variable" was not hyphenated.
What are some alternatives?
PEG.js - PEG.js: Parser generator for JavaScript
CocoaPods - The Cocoa Dependency Manager.
Jison - Bison in JavaScript.
advent-of-code - My solutions for Advent of Code
Chevrotain - Parser Building Toolkit for JavaScript
SimpleCov - Code coverage for Ruby with a powerful configuration library and automatic merging of coverage across test suites
markdown-it - Markdown parser, done right. 100% CommonMark support, extensions, syntax plugins & high speed
Ruby on Rails - Ruby on Rails
xml2js - XML to JavaScript object converter.
CPython - The Python programming language
parse5 - HTML parsing/serialization toolset for Node.js. WHATWG HTML Living Standard (aka HTML5)-compliant.
yjit - Optimizing JIT compiler built inside CRuby