nokogiri.rb

require "nokogiri"

# 1) What is your favorite Ruby class/library or method and why?

# 2) Given HTML: "<div class="images"><img src="/pic.jpg"></div>" Using Nokogiri how would you select the src attribute from
# the image? Show me two different ways to do that correctly the HTML given.
html = Nokogiri::HTML('<div class="images"><img src="/pic.jpg"></div>')
w1 = html.css('img')[0]['src'] # => "/pic.jpg"
w2 = html.xpath('//img/@src') # => "/pic.jpg"

# 3) If found HTML was a collection of li tags within a div with class="attr"
# how would you use Nokogiri to collect that information into one array?
html = Nokogiri::HTML("<div class='attr'><ul><li>first</li><li>second</li></ul></div>")
arr = html.xpath("//div[@class='attr']//ul//li").map(&:text) # => ["first", "second"]


#4) Please collect all of the data presented into a key-value store. Please include code and the output.
# Given the following HTML:
html = Nokogiri::HTML(<<-HTML
<div class='listing'>
    <div class='row'>
        <span class='left'>Title:</span>
        <span class='right'>The Well-Grounded Rubyist</span>
    </div>
    <div class='row'>
        <span class='left'>Author:</span>
        <span class='right'>David A. Black</span>
    </div>
    <div class='row'>
        <span class='left'>Price:</span>
        <span class='right'>$34.99</span>
    </div>
    <div class='row'>
        <span class='left'>Description:</span>
        <span class='right'>A great book for Rubyists</span>
    </div>
    <div class='row'>
        <span class='left'>Seller:</span>
        <span class='right'>Ruby Scholar</span>
    </div>
</div>
HTML
)

hash = {}
html.css('.row').map do |row|
   hash[row.css('.left').text.to_sym]=row.css('.right').text
end
hash.each { |key, value| puts "#{key}  #{value}" }

# =>
# Title::  The Well-Grounded Rubyist
# Author::  David A. Black
# Price::  $34.99
# Description::  A great book for Rubyists
# Seller::  Ruby Scholar

# 5) What Ruby feature do you hate?