paolodm / erlang_dc_workshop

ErlangDC Elixir Workshop

This is the code and text for a three hour elixir workshop on December 7, 2013 in Washington, D.C. for the ErlangDC one day conference.

Running it

To run this presentation, do the following:

bundle # Then make sure you've done a `git submodule init; git submodule update` in the reveal-ck gem
cd deck/introduction_to_elixir/basic_elixir/
reveal-ck generate
servedir # this is an alias I have that just does `ruby -run -e httpd . -p 9091` to serve current dir files on port 9091

Prep Work

There will be live coding examples, so go ahead and get a tmux session open on both monitors so you don't have to look at the screen to see what you're typing:

In one terminal, which goes on your laptop screen:

tmux
# (then rename the session to 'examples')

And in another, which goes on the projector:

tmux a -t examples

• Introduction to Elixir
  • Basic Elixir [25 minutes]
  • Testing [20 minutes]
  • Slightly less basic Elixir (but still pretty basic) [25 minutes]
• Introduction to OTP with Elixir
  • Servers [15 minutes]
  • Finite State Machines [20 minutes]
  • GenEvent [15 minutes]
  • Supervisors [20 minutes]

Outline

Since it's a comically long talk, it's broken up into the following sections:

• Introduction to Elixir
  • Basic Elixir [25 minutes]
    • Data Types
      • Atoms
      • Numbers
      • Lists
      • Tuples
      • Keyword Lists
      • Regular Expressions
      • Booleans
    • Pattern Matching
      • Match Operator
      • Some basic matches
      • Function Definitions
      • Case Statements
    • Functions
      • Defining Anonymous Functions
      • Calling Anonymous Functions
      • Using Functions as First-Class Types
    • Mix and Modules
      • Using mix to begin a new project
      • Defining a module
      • Compiling a module
      • Module definitions have return values
      • Document a Module
      • Generating documentation output using ExDoc
  • Testing [20 minutes]
    • What is Testing For?
    • Unit Testing
      • ExUnit
      • Defining Tests
      • Assertions
      • Examples / live coding
      • Plug Exercism.io
      • Doctests - ZOMG
  • Slightly less basic Elixir (but still pretty basic) [25 minutes]
    • List Comprehensions
    • Records
    • Pipe Operator
    • Recursion
    • Processes
• Introduction to OTP with Elixir
  • Servers [15 minutes]
  • Finite State Machines [20 minutes]
  • GenEvent [15 minutes]
  • Supervisors [20 minutes]
    • Basic
    • Adding Persistent State (let it crash...but don't forget stuff)
• Building a project with Elixir
  • Unsure what project I need to do here...figure it out