DanielVartanov

def create_proc(cofactor)
  proc = proc { |arg| arg * cofactor }
end

proc1 = create_proc(3)
proc2 = create_proc(5)

proc1.call(2)
 => 6 
proc2.call(2)

DanielVartanov

class User
  include Mongoid::Document
  include Mongoid::Timestamps::Created

  field :language 
  
  has_many :profiles

  scope :english, ->() do
    where(:language => "english")

DanielVartanov

describe Account do
  contex "given an empty account" do
    subject { Account.new(0) }
    
    context "when I put money there" do
      before { subject.put_money(120) }
      
      its(:amount) { should == 120 }
      
      it { should_not be_empty }

DanielVartanov

qsort([Threshold | Tail]) ->
  { Left, Right } = split(Threshold, Tail),
  
  qsort(Left) ++ [Threshold] ++ qsort(Right)
;
qsort([]) -> [].

DanielVartanov

require "activerecord"

ActiveRecord::Base.establish_connection :adapter => "sqlite3", :database  => "test.sqlite"

class CategoriesMigration < ActiveRecord::Migration
  def self.up
    create_table :categories do |t|
      t.string  :name
      t.string  :type
    end

DanielVartanov

var zombie = require("zombie");
var assert = require("assert");

// Load the page from localhost                                                                                                                                                    
zombie.visit("http://localhost:3000/", function (err, browser, status) {

        // Fill email, password and submit form                                                                                                                                    
        browser.
            fill("session[email]", "[email protected]").
            fill("session[password]", "123456").

DanielVartanov

Genuine === genuine # => true
Genuine === proxy   # => false

DanielVartanov

proxy = UltimateProxy.new(genuine)
proxy.class            # => Genuine   (despite this looks good...)
access_granted?(proxy) # => false  (... we fail)

DanielVartanov

genuine = Genuine.new
access_granted?(genuine) # => true

DanielVartanov

class Genuine; end;

def access_granted?(object)
  case object
  when Genuine
    true
  else
    false
  end
end