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namespace :resque do
  nemaspace :failed_job do
    desc 'restart the N latest failed jobs and remove them from failed jobs queue.'
    task :restart, [:n_latest] => [:environment] do |t, args|
      args.with_defaults(n_latest: 20)
      start_at = Resque::Failure.count - args[:n_latest] - 1
      finished_at = Resque::Failure.count - 1
      (start_at..finished_at).each do |index|
        Resque::Failure.requeue_and_remove(index)
      end

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## Requirements:
##
## ruby installed

$> gem install awesome_print
Fetching: awesome_print-1.2.0.gem (100%)
Successfully installed awesome_print-1.2.0
Parsing documentation for awesome_print-1.2.0
Installing ri documentation for awesome_print-1.2.0
Done installing documentation for awesome_print after 0 seconds

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# Required: 

# Mac OS
$> brew install exiftool

# Ubuntu && Debian
$> sudo apt-get install libimage-exiftool-perl


# Example: Set orientation to Normal (0°)

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# In the following example some simple default options are set.
class Dir
  @list_options = { hidden_files: /^\./, visible_files: /^[^\.]/, files: // }

  def self.list(path = '.', option = :visible_files)
    entries(path).grep(@list_options[option])
  end
end

# Examples

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require 'minitest/autorun'

class ExtractAndSortTest < MiniTest::Unit::TestCase
  def setup
    @lines = [
      'Article 1 -- (45)',
      'Article 2 -- (42)',
      'Article 3 -- (62)',
    'Article 4 -- ()'
    ]

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# Example: List of all sports of the Olympic Games
# HTML Structure:
#
# <div id="content">
#   <ul>
#     <li>
#       <a href="...">SPORT'S NAME</a>
#     </li>
#   </ul>  
# </div>

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class Time
  def self.yesterday
    Time.now - (24 * 60 * 60)
  end

  def self.tomorrow
    Time.now + (24 * 60 * 60)    
  end

  def self.day_after_tomorrow

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# Concrete case: Google search result URLs
#
# Requirement:
# gem install nokogiri

require 'nokogiri'
require 'net/http'
require 'uri'

def get(url)

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# The goal of this code snippet isn't to make an email validator..
# So the REGEX is not steady but works for simple cases.
#
# You can extract whatever you want by changing the Regex. :)

line = "Congratulation ! here is your email : mehdi-farsi@long-and_boring-company_name.com. Are you happy ?"

email = line[/(\w|[\.\-])+@(\w|[\.\-])+\.[a-zA-Z]+/]

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class Vehicle; end

class Car < Vehicle
  def initialize
    # A composition to separate standalone Engine class.
    # That permit to create a class Bicycle without give it
    # the property of an engine Vehicle.
    @engine = GasolineEngine.new
  end