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// Exercise 2 - Closures
// Wrap the following code in a closure and export only the "countdown" function.

(function(scope, functionName) {
  var index;
  
  function log(){
    console.log(index);
  }

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function isCreditCard(CC) {
  if (CC.length < 20) {
    for (var i = 0, l = CC.length, double = false, sum = 0; 
         i < l;
         i++, double = !double) {
      var digit = CC.substring(l-i-1,l-i),
          tproduct = parseInt(digit ,10) * (double ? 2 : 1);
      
      sum += Math.floor(tproduct / 10) + tproduct % 10;
    }

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#!/usr/bin/env ruby

color = ENV['TM_SELECTED_TEXT'] || ENV['TM_CURRENT_WORD']

if color =~ /^\#?(([0-9a-f]{3}){1,2})$/i
  hex = $1
  hexes = if hex.length == 3
    [hex[0, 1] * 2, hex[1, 1] * 2, hex[2, 1] * 2]
  else
    [hex[0, 2], hex[2, 2], hex[4, 2]]

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/**
 * Style definitions for banner management
 */

.ui-split {
  position: relative;
}

.ui-split-pane {
  position: absolute;

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module Mongoid
  module Markdown
    def self.included(base)
      base.extend ClassMethods
    end
    
    module ClassMethods
      def markdown(*attributes)
        write_inheritable_attribute(:markdown_attributes, markdown_attributes + Array(attributes))
        @markdown_unicode = String.new.respond_to? :chars

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module Mongoid
  module DeepCloning
    def deep_clone(attrs = {}, obj = nil)
      returning obj || self.class.new do |o|
        o.write_attributes(@attributes.merge(attrs).except("_id", "versions").except(*o.class.associations.keys))
        yield o if block_given?
        o.save
        @attributes.each_pair do |key, value|
          next unless proxy = self.associations[key]
          case proxy.association

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class Account
  include Mongoid::Document
  include Mongoid::Timestamps
  
  field :subdomain, :type => String
  embeds_many :users
  accepts_nested_attributes_for :users
  
  validates_presence_of :name, :subdomain
  validates_uniqueness_of :subdomain, :case_sensitive => false

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class InlinePremailer < ::Premailer
  def initialize(string, options = {})
    @options = {:warn_level => Warnings::SAFE, 
                :line_length => 65, 
                :link_query_string => nil, 
                :base_url => nil,
                :remove_classes => false}.merge(options)

    @html_file = @options[:base_url]
    @is_local_file = false

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require File.expand_path(File.dirname(__FILE__) + "/../../../spec_helper")

class ValidationTest
  include ActiveModel::Validations

  before_validate :do_something
  validates_presence_of :something
  
  def do_something
    raise "callback"

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class Post
  key :title, String
  key :slug, String

  validates_presence_of :title, :slug
  validates_uniqueness_of :slug
  before_create :fill_in_slug

protected
  def fill_in_slug