Intro to Elixir

Structure of the presentation

  • Talk about problems you might be familiar with
  • Discuss some possible approaches
  • Overview of Elixir
  • Questions

 

Please interrupt me anytime if you have questions

Old state of Web Development

  • Come from Ruby or Python
  • Writing database heavy MVC based CRUD applications

Disadvantages

  • Need to rely on third party webservers
  • Application management becomes hard
  • Stateful applications become very hard

Elixir

  • Familiar syntax
  • Functional
  • Great tooling
  • "Let it crash" philosophy
  • Built on top of Erlang/OTP

Erlang/OTP

  • Developed by Ericsson

  • Been around for over 20 years

  • Built with concurrency and distributed systems in mind

  • Battle tested not only in telecom systems

Hello world example

defmodule HelloWorld do
  def hello do
     IO.puts "Hello, World!"
  end
end

HelloWorld.hello() # "Hello, World!"

Unique Language Features

Pattern Matching

# without pattern matching
def foobar(foo) do
  if foo == "foo" do
    "Foo"
  else
    "Bar"
  end
end

# with pattern matching
def foobar("foo"), do: "Foo"
def foobar(_foo), do: "Bar"

Pipes

foo = add1(1) # 2
foo = add1(foo) # 3
foo = add1(foo) # 4

1
|> add1() # 2
|> add1() # 3
|> add1() # 4

Ok, I'm interested. Where should I look for resources

  • elixir-lang.org
  • elixir-forum.com
  • irc/elixir slack

In summary

  • Write more maintainable applications
  • Take advantage of a mature ecosystem
  • Unique features that help with development

Fin

Intro to Elixir

By enilsen16

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Intro to Elixir

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