cypok

def quick(a)
  return a if a.min == a.max
  m = a[rand(a.size)]
  quick( a.select { |i| i <= m } ) +  quick( a.select { |i| i > m } )
end

describe "Quicksort" do
  it "should sort an empty array" do
    quick([]).should == []
  end

cypok

#pragma once

#include "../console/console.h"
#include <stdlib.h>
#include <stdio.h>

namespace MDS
{

#pragma pack(push, 1)

cypok

3.times do
  puts "Hello, world!"
end

puts "Tomorrow will be " + 24.hours.from_now

cypok

default_run_options[:pty] = true

set :application, "embplay"

set :user,        "deployer"
set :deploy_to,   "/home/deployer/#{application}"

set :use_sudo,    false

set :scm,         "git"

cypok

class UserSession < Authlogic::Session::Base
  acts_as_translatable_model

  login_blank_message       "не должен быть пустым"
  login_not_found_message   "не найден"
  password_blank_message    "не должен быть пустым"
  password_invalid_message  "неверный"
end

cypok

a = [3, 4, 5]
b = %w{a b c} # b = ['a', 'b', 'c'] - быстрая инициализация строковых массивов

a.each do |digit|
  puts digit.to_s # конвертируем в строку (хотя тут это необязательно)
end

# поиграй с этим в irb - интерактивная консоль для ruby
a + b
a - b

cypok

class Rate < ActiveRecord::Base
  belongs_to :user
  belongs_to :book

  validates_presence_of :user, :book, :value
  validates_numericality_of :value,
                            :only_integer => true
  validates_inclusion_of  :value,
                          :in => 1..10,
                          :message => "should be from 1 to 10"

cypok

Note that the object option is applied to all of the roles you specify in the argument list. As such,

  allow :devil, :son, :of => God
is equivalent to 

  allow :devil, :of => God
  allow :son,   :of => God

cypok

set nocompatible
set backspace=indent,eol,start
set history=50		" keep 50 lines of command line history
set ruler		" show the cursor position all the time
set showcmd		" display incomplete commands
set incsearch		" do incremental searching
set mouse=a
syntax on
set hlsearch

cypok

class ListNode
  attr_accessor :prev, :next, :value

  def initialize(prev, next, value)
    @prev = prev
    @next = next
    @value = value
  end
end