samkahchiin

# Save this file to your computer so you can run it 
# via the command line (Terminal) like so:
#   $ ruby deaf_aunty.rb
#
# Your method should wait for user input, which corresponds
# to you saying something to your Aunty.

# You'll probably want to write other methods, but this 
# encapsulates the core Aunty logic

samkahchiin

def to_roman(num)
  # Your code here
  roman_hash = { "M"  => 1000,
                 "CM" => 900,
                 "D"  => 500,
                 "CD" => 400,
                 "C"  => 100,
                 "XC" => 90,
                 "L"  => 50,
                 "XL" => 40,

samkahchiin

# This is how you define your own custom exception classes
class NoOrangesError < StandardError
end

class OrangeTree

  def initialize
    @age = 0
    @orange_on_tree = []
    @height = 0

samkahchiin

Octave CheatSheet

GNU Octave is a high-level interpreted language, primarily intended for numerical computations.
(via GNU Octave)

Basics

• not equal ~=
• logical AND &&

samkahchiin

Sign PGP Key on Github with Keybase

Set everything up

• Linux Computer (Windows or MacOS is compatible but you need to install GIT manually)
• You need to install Keybase, login or sign up one if you don't have.
• Your basic skill with Git and Github:

You need to know that Linux are have a default software: gpg for sign the GPG key. but we are going to use Keybase instead.

samkahchiin

Typing vagrant from the command line will display a list of all available commands.

Be sure that you are in the same directory as the Vagrantfile when running these commands!

Creating a VM

• vagrant init -- Initialize Vagrant with a Vagrantfile and ./.vagrant directory, using no specified base image. Before you can do vagrant up, you'll need to specify a base image in the Vagrantfile.
• vagrant init <boxpath> -- Initialize Vagrant with a specific box. To find a box, go to the public Vagrant box catalog. When you find one you like, just replace it's name with boxpath. For example, vagrant init ubuntu/trusty64.

Starting a VM

• vagrant up -- starts vagrant environment (also provisions only on the FIRST vagrant up)

samkahchiin

System Design Cheatsheet

Picking the right architecture = Picking the right battles + Managing trade-offs

Basic Steps

1. Clarify and agree on the scope of the system

• User cases (description of sequences of events that, taken together, lead to a system doing something useful)
  • Who is going to use it?
  • How are they going to use it?

samkahchiin

HTTP status code symbols for Rails

Thanks to Cody Fauser for this list of HTTP responce codes and their Ruby on Rails symbol mappings.

Status Code Symbol
1xx Informational
100 :continue
101 :switching_protocols
102 :processing