booch

#### Debian Installer preseed file for Debian 7.2 (Wheezy) minimal install.

# Allow installer to ask questions interactively - for now.
d-i preseed/interactive boolean true
d-i debconf/frontend string newt

# Set localization (language, country, and locale).
d-i debian-installer/locale string en_US
d-i localechooser/preferred-locale select en_US.UTF-8

booch

What If We Could Mark Pure Methods?

Me

• Craig Buchek
• @CraigBuchek
• github.com/booch

booch

# Allow multiple classes to be declared via A|B instead of [A, B].
class Class
    def |(*other_classes)
        SetOfClasses.new(self, other_classes)
    end
end

require 'set'
class SetOfClasses
    attr_reader :classes

booch

Ruby ORMs

Abstract

Rails is really a collection of pieces that can be put together to create a web app. You can enhance or replace many of the components - how you write views, how controllers work, and how you build models. While models are built on top of ActiveRecord in the

booch

# TODO:
# 
# Allow specifying number of runs.
# Ensure child contexts get run multiple times.
# Check what happens on failure in one of the runs.
# Different color for dots.
# Shrinking.


module RandomlyGenerated

booch

These are ideas that came up during reading articles and discussions about the recent happenings in Ferguson.

New Laws

1. All police officers shall have their names clearly displayed at all times while in uniform. Violation shall be a felony of impersonating a police officer. The names must be in a legible font, at least 30 points in size.

2. All police officers shall wear video recording devices. These recordings shall

booch

Here are some general guidelines to consider when reviewing a pull request:

• Is the code covered by tests? *
• Are there any tests cases that are missing? *
  • Unit tests - for any model changes *
  • Acceptance tests - ???infrastructure needed
  • Integration tests - for any front end behavior change *
  • Black box testing? infrastructure needed
  • Controller tests - for any controller changes *
• Rake / release tasks - manually run them? *

booch

  * '...' - Using for Atom.
  * "..." - Using for Text.
  * [...] - Using this for List (and maybe Map).
  * {...} - Using this for Block.
  * <...> - No good, as it's too hard to parse differently than < and >.
  * (...) - Already overloaded for precedence and method call invocation. Tuple?
  * [<...>] - Looks like a really good choice. Map?
  * [!...!] - Might be too hard to parse ! inside a List then. (Unless we don't have a ! operator.)
  * [@...@] - Probably too hard to parse $ sigil inside a List then.
  * [#...#] - Probably too hard to parse comments then. Might use for nestable block comments.

booch

# From http://blog.boochtek.com/2015/02/23/hexagonal-rails-controllers
class OrderController < ApplicationController

  def index
    interactor.on(:display) { |orders| render orders }
    interactor.list
  end

  def show
    interactor.on(:display) { |order| render order }

booch

Please have Vagrant and VirtualBox installed ahead of the workshop, if possible. We'll be providing a virtual machine (on USB keys) with the lab exercises. Having Vagrant ready to run the VM will help us get started quickly. That said, we'll have a few minutes of slide presentation to get started. You might be able to get things working then. If you're unable to get Vagrant working, we'll have you pair up with a neighbor.