ruby-ll
Nokogiri
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ruby-ll
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How SerpApi sped up data extraction from HTML from 3s to 800ms (or How to profile and optimize Ruby code and C extension)
But some tests were failing with LL::ParserError from ruby-ll that is used in Oga.
Nokogiri
- Web Scraping in Python – The Complete Guide
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Did you know Nokogiri now has opt-in HTML5 parsing?
release planning: v1.16.0 · Issue #2897 · sparklemotion/nokogiri
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As a Go developer, I’m surprised Crystal isn’t more popular
What's holding me back from going all in with Crystal is I have a lot of pre-existing Ruby code, and porting Ruby code to Crystal can be tricky. For example, Crystal lacks an Enumerator class (aka generators) due to captured block semantics. I also wish the shards ecosystem was a little more mature; for example there's multiple HTML parsing libraries, but none have all of the features that Ruby's Nokogiri has. For new greenfield backend projects, I would totally use Crystal.
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Two months into learning Ruby, it is the most beautiful language I ever learned
Welcome! Ruby isn't exactly "dying", but the hype/popularity is definitely fading. This is primarily because Ruby is no longer "new", most of Ruby's popularity came from Rails, and now Rails is no longer the "new hotness". However, Ruby still has lots of awesome features and lots of awesome other libraries and frameworks, such as the new fancy irb gem that uses reline, nokogiri, chunky_png, the async gems, Dragon Ruby, SciRuby, Ronin, and the new Hanami web framework.
- What should I be learning?
- Comparable maintained Kimurai alternative?
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In "Your Name" (2016), Mitsuha and Tesshi are seen turning a tree into their makeshift café, which is why one of the trees in the town is later missing
great for hacking at xml
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Ditch Your Version Manager
Mike has worked hard over the years to have Nokogiri come with its dependencies. It does come with libxml and all that is required.
From https://nokogiri.org
> These dependencies are met by default by Nokogiri's packaged versions of the libxml2 and libxslt source code, but a configuration option --use-system-libraries is provided to allow specification of alternative library locations.
Some authors work hard to have their tools do the right thing and consistently.
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Web scraping with rails
If the page is rendered as html you can use Nokogiri. It has great support and is pretty easy to get started with too.
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Nokogiri 1.12 supports HTML5 parsing (after assimilating Nokogumbo)
And even now, pulling in a Java-based HTML5 parser is still probably easier than re-implementing in FFI, which is why I created https://github.com/sparklemotion/nokogiri/issues/2227 and would love to have this the conversation there if possible.
What are some alternatives?
rbspy - Sampling CPU profiler for Ruby
Oga - Oga is an XML/HTML parser written in Ruby.
bcc - BCC - Tools for BPF-based Linux IO analysis, networking, monitoring, and more
Ox - Ruby Optimized XML Parser
perf_data_converter - Tool to convert Linux perf files to the profile.proto format used by pprof
HTML::Pipeline - HTML processing filters and utilities
nokogiri-rust - Ruby FFI wrapper around scraper crate to be used instead of Nokogiri. Status: proof of concept.
Oj - Optimized JSON
ROXML - ROXML is a module for binding Ruby classes to XML. It supports custom mapping and bidirectional marshalling between Ruby and XML using annotation-style class methods, via Nokogiri or LibXML.
HappyMapper - Object to XML mapping library, using Nokogiri (Fork from John Nunemaker's Happymapper)
Sablon - Ruby Document Template Processor based on docx templates and Mail Merge fields.
rubygems - Library packaging and distribution for Ruby.