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require 'nokogiri'
require 'open-uri'

# Fetch and parse HTML document
doc = Nokogiri::HTML(open('http://www.nokogiri.org/tutorials/installing_nokogiri.html'))

puts "### Search for nodes by css"
doc.css('nav ul.menu li a', 'article h2').each do |link|
  puts link.content
end

puts "### Search for nodes by xpath"
doc.xpath('//nav//ul//li/a', '//article//h2').each do |link|
  puts link.content
end

puts "### Or mix and match."
doc.search('nav ul.menu li a', '//article//h2').each do |link|
  puts link.content
end