A wealth of information sits waiting on the Internet. Instant Nokogiri helps you access this information today with Nokogiri, a slick and fast HTML and XML parsing engine. Bundled in an easy-to-use Ruby gem, Nokogiri empowers you to combine disparate data sources and gain an unprecedented insight into your Ruby applications.

"Instant Nokogiri" is a hands-on guide to extracting information from the sources available on the Internet, sources that are not traditionally accessible to developers. You will learn the secrets of identifying content, extracting just the right parts, and incorporating the new data in your Ruby applications.

"Instant Nokogiri" provides step-by-step instructions on how to incorporate the power of the Nokogiri gem and data parsing into your Ruby projects. You will learn all the basics of designing a project around data parsing, exploring disparate data sources, and refining strategies and theories. You will also combine your thoughts in a real-world, real-data sample application. This book will examine common Nokogiri and Ruby methods useful in scraping and parsing complete with practical code samples. You will also learn the secrets behind effective caching, rate limiting, and masking your identity. Instant Nokogiri will teach you how to get targeted data out of HTML and into Ruby, as well as tons of tips, tricks, code snippets, and expert advice.

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Spis treści

Instant Nokogiri. Learning data scraping and parsing in Ruby using the Nokogiri gem eBook -- spis treści

• Instant Nokogiri
  • Instant Nokogiri
  • Credits
  • About the Author
  • About the Reviewer
  • www.packtpub.com
    • Support files, eBooks, discount offers, and more
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    • Free Access for Packt account holders
  • 1. Instant Nokogiri
    • So, what is Nokogiri?
    • Installation
      • Step 1 what do I need?
      • Step 2 Ruby
      • Step 3 RubyGems
      • Step 4 Nokogiri and Bundler
      • Step 5 verify
      • And thats it
    • Quick start creating your first Nokogiri application
      • Step 1 research
      • Step 2 explore
      • Step 3 write
      • Step 4 extend
    • Top 13 features you need to know about
      • The css method
      • The length method
      • The each method 1
      • The each method 2
      • The content method
      • The at_css method
      • The xpath method
      • The at_xpath method
      • The to_s method
      • Spoofing browser agents
      • Caching
      • SSL
      • Mechanize
    • People and places you should get to know
      • Official sites
      • Articles and tutorials
      • Community
      • Twitter