mjansen401

class CoinChanger
  def self.change(amount)
    change = []
    [25,10,5,1].each do |coin|
      while amount >= coin
        change << coin
        amount -= coin
      end
    end
    change

mjansen401

bundle exec rake spec
/Users/mike/.rvm/rubies/ruby-1.9.2-p180/bin/ruby -S bundle exec rspec ./spec/favicon_spec.rb ./spec/integration_spec.rb ./spec/page_spec.rb ./spec/server_helpers_spec.rb ./spec/server_spec.rb ./spec/stores/couch_spec.rb
.FFFFFFFFFFFFFFFFFFFFF......F..FFFF.......FFFF.........................F[{"type"=>"paragraph", "id"=>"435d07cf9bf34a70", "text"=>"Here we list neighborhood pages with those most recently changed listed first. See also [[Local Changes]]."}, {"type"=>"activity", "id"=>"e9e9f102158e1382"}]
F.*...........

Pending:
  GET /recent-changes.json the JSON does not show page with journal but without date
    # No reason given
    # ./spec/server_spec.rb:195

mjansen401

def payment_account
  PaymentAccountPresenter.new(@member)
end

class PaymentAccountPresenter
  def billing_info
    ...
  end

  def subscription

mjansen401

class Stock
  def initialize(symbol)
    @symbol = symbol
    @observers = []
  end

  def register_observer(observer)
    @observers << observer
  end

mjansen401

;Original function, p. 41 of FP for OO

user=> (def shift
         (fn [this xinc yinc]
           (Point (+ (x this) xinc)
                  (+ (y this) yinc))))
CompilerException java.lang.RuntimeException: Unable to resolve symbol: y in this context, compiling:(NO_SOURCE_PATH:1) 

;Updated function with correct :x :y key use
user=> (def shift

mjansen401

;the code

(ns gilded-rose.core)

(def vest "+5 Dexterity Vest")
(def brie "Aged Brie")
(def elixir "Elixir of the Mongoose")
(def sulfuras "Sulfuras, Hand of Ragnaros")
(def passes "Backstage passes to a TAFKAL80ETC concert")
(def cake "Conjured Mana Cake")

mjansen401

(ns coin-changer.core)

(defn can-use-coin? [coin amount]
  (<= coin amount))

(defn largest-coin [amount]
  (some #(if (can-use-coin? % amount) %) [25 10 5 1])) 

(defn change-for [n]
  (loop [amount n coins []]

mjansen401

A solution to the Gilded Rose kata in Ruby with specs included. 
Tests:

describe GildedRose do

  VEST = "+5 Dexterity Vest"
  ELIXIR = "Elixir of the Mongoose"
  BRIE = "Aged Brie"
  SULFURAS = "Sulfuras, Hand of Ragnaros"
  BACKSTAGE_PASSES = "Backstage passes to a TAFKAL80ETC concert"

mjansen401

Courtesy of http://www.rubyenterpriseedition.com/documentation.html#_garbage_collector_performance_tuning

Add to your .bash_profile: 

export RUBY_HEAP_MIN_SLOTS=500000
export RUBY_HEAP_SLOTS_INCREMENT=250000
export RUBY_HEAP_SLOTS_GROWTH_FACTOR=1
export RUBY_GC_MALLOC_LIMIT=50000000

mjansen401

namespace("Todo.collections", {
  Todos : Backbone.Collection.extend({
    model: Todo.models.Todo
    url: "todos"
  })
});