davejachimiak

countChange :: Integer -> [Integer] -> Integer
countChange amount denominations
    | null denominations || amount < 0 = 0
    | amount == 0 = 1
    | otherwise = countChange amount (tail denominations) + countChange (amount - head denominations) denominations

davejachimiak

module Curryable
  def def_function &block
    @function = block
  end

  def call arg
    unless @function
      raise StandardError, 'must define a function with def_function'
    end

davejachimiak

SELECT DISTINCT main_genres.*
FROM main_genres
JOIN movie_genres ON movie_genres.genre_id = main_genres.genre_id
JOIN netflix_instant_movies ON netflix_instant_movies.id = movie_genres.netflix_instant_movie_id
JOIN rotten_tomatoes ON rotten_tomatoes.netflix_instant_movie_id = netflix_instant_movies.id
JOIN netflix_instant_movie_imports ON netflix_instant_movie_imports.netflix_instant_movie_id = netflix_instant_movies.id
JOIN netflix_instant_imports ON netflix_instant_imports.id = netflix_instant_movie_imports.netflix_instant_import_id
WHERE netflix_instant_imports.id =
    (SELECT id
     FROM netflix_instant_imports

davejachimiak

module FromHashable
  def initialize hash
    @hash = hash

    set_ivars
    set_methods
    set_as_hash
  end

  private

davejachimiak

module LoggingObserver
  def self.included base
    base.extend ClassMethods
  end

  module ClassMethods
    def new *args
      @instance = super
      override_methods
      @instance

davejachimiak

REMOTE_SHA=`git rev-parse origin/my_branch`
PULL_NUMBER=`git ls-remote origin | grep $REMOTE_SHA | grep pull | perl -n -e '/pull\/(.*)\/head/ && print $1'`

git ls-remote origin | grep refs\/pull\/$PULL_NUMBER\/merge | awk '{ print $1 };'

davejachimiak

old_instance_methods = Object.instance_methods

require 'minitest/spec'

$infected_assertions = Object.instance_methods - old_instance_methods

module Kernel
  def expect object
    Expect.new object
  end

davejachimiak

" ...
function! OpenRelatedCoffeeFile(action)
  let action = a:action
  if match(expand('%'), 'app/assets') != -1
    exec action . " " . expand("%:s?app/assets?spec?:s?.js.coffee?_spec.js.coffee?")
  else                                                                                                                                    
    exec action . " " . expand("%:s?^spec?app/assets?:s?_spec??")
  endif
endfunction

davejachimiak

class Cohabitant < ActiveRecord::Base
  VALID_EMAIL_REGEX = /\A[\w+\-.]+@[a-z\d\-.]+\.[a-z]+\z/i

  validates_presence_of :department, :location, :contact_name, :contact_email
  validates :contact_email, :format => { :with => VALID_EMAIL_REGEX }
  
  has_and_belongs_to_many :notifications
end

davejachimiak

@cohabitant = Cohabitant.find(2)
@cohabitant.notification_ids
  
# => [11, 13, 14]

@cohabitant.notifications.each do |n|
  puts n.created_at.strftime("%A, %B %e, %Y") + " by #{n.user.name}"
end

# => Tuesday, June 26, 2012 by New Guy