jjb

def my_method(arg1, arg2)
  Foo.typecheck arg1
  Bar.typecheck arg2

  puts "The method finished!"
end

jjb

# First do this
Time.zone = 'EST'

# Now you can do this
Time.zone.now

# and this!
Time.zone.local(2013, 1, 1)

# rails/activerecord/arel work with it:

jjb

class Foo
  def bar
    Bar.find(bar_id)
  end
end

jjb

describe "#bar" do
  let(:foo){FactoryGirl.build_stubbed(:foo)}
  let(:bar_id){double("bar_id")}
  let(:bar){double("bar")}
  subject{foo.bar}
  before do
    foo.stub(:bar_id){bar_id}
    Foo.stub(:find).with(bar_id){bar}
  end

jjb

describe "#bar" do
  let(:bar){FactoryGirl.create(:bar)}
  let(:foo){FactoryGirl.create(:foo, bar_id: bar.id)}
  subject{foo.bar}

  it{should eq bar}
end

jjb

class Product
  attr_accessible :price
  attr_accessible :name

  def long_listing
    "The price of #{name} is #{human_price}"
  end
  
  def short_listing
    "#{name}: #{human_price}"

jjb

def divisible_by_3?(number)
  number%3 == 0
end

def commaifier(number)
  reversed = number.to_s.reverse

  result = ""

  number.to_s.size.times do |i|

jjb

def calculate_thing_ratio
  sub_things / total_things
end

jjb

class CreateFoos < ActiveRecord::Migration
  def change
    create_table :foos do |t|
      t.json :bar # this blows up in Rails 3
      t.timestamps
    end
  end
end

jjb

class Foo < ActiveRecord::Base
  serialize :bar, JSON
end