timuruski

def foo(d=[]):
    d.append('a')
    return d

print foo() # => ['a']
print foo() # => ['a', 'a']
print foo() # => ['a', 'a', 'a']

timuruski

I'm putting this up here so that I can see that the GitHub Gist CLI tool works properly.

timuruski

#! /bin/bash
find vim/bundle -name "config" | grep .git | while read d; do echo "submodule add " $(grep "url = " $d | awk '{print $3}') $(echo $d | sed -e "s/\.git\/config//") | xargs git; done

timuruski

image_a = Image.make
stub(image_a).migrated? { false }
stub(image_a).local_filename { 'spec/fixtures/backdrop.jpg' }

image_b = Image.make
stub(image_b).migrated? { false }
stub(image_b).local_filename { 'spec/fixtures/backdrop.jpg' }

document = Movie.new(:title => 'Test Movie', :images => [image_a, image_b])

timuruski

// Operational
{
  "operational": true,
  "message": null
}

// Failing
{
  "operational": false,
  "message": "We'll be right back."

timuruski

x = 129
a = (0...x).map { |n| (n % x) }.uniq
puts a.size == x # true

x = 129
a = (0...(x-1)).map { |n| (n % x) }.uniq
puts a.size == x # false

timuruski

class Post
  def self.find_by_id(id)
    self.new
  end

  def comments
    CommentCollection.new
  end
end

timuruski

# As illustrated in http://confreaks.net/videos/427-rubyconf2010-zomg-why-is-this-code-so-slow

Person = Struct.new(:name)
people = [Person.new('steve'), Person.new('bill'), Person.new('larry')]

puts people.inject({}) { |table,person| table[person.name] = person; table }
puts Hash[people.map { |person| [person.name, person] }]

# {"steve"=>#<struct Person name="steve">, "bill"=>#<struct Person name="bill">, "larry"=>#<struct Person name="larry">}

timuruski

describe "validations" do
  context "birthday" do
    ["bad format","2100-01-01","1800-01-01","2000-13-01","2000-00-01","2000-01-32","2000-01-00"].each do |bday|
      it "errors with invalid date - #{bday}" do
        person = Person.create(:name => "not blank", :birthday => bday)
        person.errors.messages[:birthday].first.should == "is invalid"
      end
    end

    ["2099-12-31", nil].each do |bday|

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class Order < ActiveModel::Base
  module States
    UNPAID = 'unpaid'.freeze
    PAID = 'paid'.freeze
  end

  attr_accessor :state
  validates :state, :inclusion => { :in => [States::UNPAID, States::PAID] }
end