api_demo.rb

require 'json'
require 'open-uri'

puts "Username please"
username = gets.chomp

# TODO - Let's fetch name and bio from a given GitHub username
url = "https://api.github.com/users/#{username}"

user_serialized = open(url).read

user = JSON.parse(user_serialized)

puts "#{user["name"]} as #{user["public_repos"]}"

csv_demo.rb

require 'csv'

# TODO - let's read/write data from beers.csv
filepath    = 'data/beers.csv'

csv_options = { col_sep: ',', quote_char: '"', headers: :first_row }

origins = []

CSV.foreach(filepath, csv_options) do |row|
  origins << row["Origin"]
end

p origins.uniq.sort

json_demo.rb

require 'json'

# TODO - let's read/write data from beers.json
filepath    = 'data/beers.json'

serialized_beers = File.read(filepath)

json_beers = JSON.parse(serialized_beers)

p json_beers["beers"][1]["name"]

scraping.rb

require 'open-uri'
require 'nokogiri'

ingredient = 'chocolate'
url = "http://www.letscookfrench.com/recipes/find-recipe.aspx?s=#{ingredient}"

html_file = open(url).read
html_doc = Nokogiri::HTML(html_file)

html_doc.search('.m_titre_resultat a').each do |element|
  # puts element
  puts element.text.strip
  puts element.attribute('href').value
  puts "==============================================="
end

scraping_demo.rb

require 'open-uri'
require 'nokogiri'

# Let's scrape recipes from http://www.epicurious.com

storing_csv.rb

require 'csv'

csv_options = { col_sep: ',', force_quotes: true, quote_char: '"' }
filepath    = 'data/new_beers.csv'


beers = [
  { name: 'Asahi', appereance: 'Pale Lager', origin: 'Japan'},
  { name: 'Guinness', appereance: 'Stout', origin: 'Ireland'},
  { name: 'Cuvée des Trolls', appereance: 'Stout', origin: 'Ireland'},
]
CSV.open(filepath, 'wb', csv_options) do |csv|
  csv << ['Name', 'Appearance', 'Origin']

  beers.each do |beer|
    csv << [beer[:name], beer[:appereance], beer[:origin]]
  end
end

storing_json.rb

require 'json'

beers = [ beers: [
  {
    name:       'Edelweiss',
    appearance: 'White',
    origin:     'Austria'
  },
  {
    name:       'Guinness',
    appearance: 'Stout',
    origin:     'Ireland'
  }
]]

filepath = "data/new_beers.json"

File.open(filepath, 'wb') do |file|
  file.write(JSON.generate(beers))
end