arnvald

module ShowMyMethods
  def self.included(base)
    puts (base.instance_methods - Object.instance_methods).sort
  end
end

class IncludeFirst
  include ShowMyMethods

  def it_wont_be_shown; end

arnvald

json.set! :files do
  json.array! [@car_photo] do |photo|
    json.id car_photo.id
    json.url  car_photo.car_photo.url(:thumb)
  end
end

arnvald

require 'rspec'

class MoneyChanger

  def initialize(notes=[200,100,50,20,10,5,2,1])
    @notes = notes.uniq.sort.reverse
  end

  def change(amount)
    possible_notes = @notes.select {|n| n <= amount}

arnvald

roman = %w(M CM D CD C XC L XL X IX V IV I)
arabic = [1000, 900, 500, 400, 100, 90, 50, 40, 10, 9, 5, 4, 1]
@roman_arabic = Hash[*roman.zip(arabic).flatten]

def arabic2roman(arabic)
  roman = ""
  @roman_arabic.each do |symbol,value|
    while arabic/value > 0
      roman << symbol
      arabic -= value

arnvald

Gra na biwak "Wędrowniczy Wybuch"

Spis treści:

1. Czas i miejsce
2. Uczestnicy
3. O Wybuchu
4. Koncepcja gry
5. TODO