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Key benefits

Learn something new in an Instant! A short, fast, focused guide delivering immediate results

Master Nokogiri with the use of clear, step-by-step instructions and real world examples

Learn how to identify sources, parse documents, and extract information from them

Use the interactive Ruby shell and the features of Nokogiri to test and refine your theories in real-time

Description

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.

What you will learn

Set up a development environment for Nokogiri

Know when to use a parsing engine

Identify ideal sources from which to extract content and devise optimal strategies for selecting content

Use CSS and XPath selectors to target content

Test your theories in an interactive Ruby shell

Work with live web data

Avoid detection and be a good netizen

Incorporate your finished snippets in a full Sinatra application

What do you get with Print?

Instant access to your digital eBook copy whilst your Print order is Shipped

Paperback book shipped to your preferred address

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Frequently bought together

Instant Nokogiri

Aug 2013 52 pages

4.1 (8)

eBook

€8.99 ~~€15.99~~

Total € 19.99

€19.99

Total € 19.99

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Amazon verified reviews

JennyU Oct 31, 2013

Instant Nokogiri was an easy to read and implement manual. The examples have a good progression into complexity but never leave the reader behind. It is a good introduction into web scraping and provides intermediate to advanced uses for the gem. An understanding of Ruby on Rails and Ruby's gem system helps yet is not required. I wish more development books were this good.

Amazon Verified review

Felix Alcala Sep 24, 2014

Ich hätte sicher auch durch Blogeinträge usw. alles erlernen können -- aber Zeit ist Geld. Das Buch ist super aufgebaut und echt schnell zu lesen. Bin sehr zufrieden.

jr Nov 03, 2013

As a Ruby developer, I hate wasting my brain's CPU cycles. Technical books should be simple and easy to follow. If you agree with me and you need to get data from a website where there is no API provided, you will love this book.The author walks you through a step-by-step workflow of scraping and parsing a news headline (from The New York Times website) to creating a small news aggregation website using Sinatra. It also explains 13 features that will prevent you from ever needing to look for Nokogiri's documentation or scavenge hunting StackOverflow. Finally, if you need to interact with a page before scraping its data you will learn to use the Mechanize gem as a bonus.Whether you are a new or seasoned developer, you will benefit from this short but concise book.

Eduardo F. Oct 14, 2013

The technical content of this book is very good. You will easily learn how to do data scraping using the Nokogiri gem.The examples are simple and concise. It contains all what you need to know about Nokogiri.Also the good practices and tips are very well explained.If you want to know more about data scraping, you should definitely buy this book!

Shanison Nov 09, 2013

Hunter Powers organize and write this book in a way that is very easy to understand for readers and it is a good book to reference when you need to use Nokogiri instead of reading Nokogiri official documents. You can find my full review at [...]

Instant Nokogiri: Learning data scraping and parsing in Ruby using the Nokogiri gem

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