RasPhilCo

RasPhilCo

Repos

• fjord
  • rasphilco/fjord
  • Simplified local node/python/ruby app development for MacOS. Powered by Heroku buildpacks.
• rabbit hole
  • rasphilco/rh
  • Find any executable on $PATH and view its symlink chain
• oclif

RasPhilCo

require 'singleton'

class Subscriber
  include Singleton
  attr_reader :subscriptions

  def initialize
    @subscriptions = {}
  end

RasPhilCo

Basic CompSci Topics

from Cracking the Coding Interview

Data Structures

Linked lists

RasPhilCo

• Design Patterns in Ruby
• Game Programming Patterns

RasPhilCo

# -*- mode: ruby -*-
# vi: set ft=ruby :

Vagrant.configure(2) do |config|
  config.vm.box = "ubuntu/trusty64"

  config.vm.provider "virtualbox" do |vb|
    vb.memory = "4096"
    vb.cpus = "2"
  end

RasPhilCo

# git aliases
alias g 'git'
alias gst 'git status'
alias gd 'git diff'
alias gco 'git checkout'
alias ga 'git add'
alias gcm 'git commit -m'
alias gl "git log --graph --abbrev-commit --decorate --date=relative --format=format:'%C(bold blue)%h%C(reset) - %C(bold 
green)(%ar)%C(reset) %C(white)%s%C(reset) %C(dim white)- %an%C(reset)%C(bold yellow)%d%C(reset)' --all"

RasPhilCo

require 'minitest/autorun'
require 'minitest/mock'

# From the Queen herself, Sandi Metz
# https://www.youtube.com/watch?v=URSWYvyc42M
# http://jnoconor.github.io/images/unit-testing-chart-sandi-metz.png

class Gear
  attr_reader :chainring, :cog, :wheel, :observer

RasPhilCo

require 'minitest/autorun'

Tree = Struct.new(:value, :left, :right)


class TestTree < Minitest::Test
  def test_is_tree_sorted_true
    seven = Tree.new(7)
    three = Tree.new(3)
    five = Tree.new(5, three, seven)

RasPhilCo

# extended from https://stackoverflow.com/questions/10661610/implement-a-tree-iterator 

class Node
  attr_accessor :data, :children

  def initialize(data, *children)
    @data = data
    @children = children
  end

RasPhilCo

Larry Wall, Three Virtues --

There are three great virtues of a programmer:

1. Laziness: The quality that makes you go to great effort to reduce overall energy expenditure. It makes you write labor-saving programs that other people will find useful and document what you wrote so you don't have to answer so many questions about it.
2. Impatience: The anger you feel when the computer is being lazy. This makes you write programs that don't just react to your needs, but actually anticipate them. Or at least pretend to.
3. Hubris: The quality that makes you write (and maintain) programs that other people won't want to say bad things about.

Sandi Metz, Ruby Rouges podcast --

Four rules for developers: