joeljackson

add_subscription(user, subscription)

def add_subscription(%User{subscription: nil} = user, subscription) do
  #Add subscription here using user
end

def add_subscription(_user, _subscription) do
  raise "This user already has a subscription"
end

joeljackson

add_subscription(user, subscription)

def add_subscription(%User{subscription: nil}, subscription) do
  #Add subscription here
end

def add_subscription(_user, _subscription) do
  raise "This user already has a subscription"
end

joeljackson

defmodule Fib do 
  def fib(0), do: 0
  def fib(1), do: 1
  def fib(n), do: fib(n-1) + fib(n-2)
end

joeljackson

def fib(num)
  return 0 if num == 0
  return 1 if num == 1
  return fib(num - 1) + fib(num - 2)
end

joeljackson

alias Rebirth.Subscription
alias Ecto.Query
Subscription |> Query.where([s], not is_nil(s.user_id))

joeljackson

alias Rebirth.Subscription
alias Ecto.Query
Subscription |> Query.where([s], s.user_id != nil)

joeljackson

select * from subscriptions where user_id is not null;

joeljackson

alias Rebirth.Repo
query = from o in Rebirth.Order, []
orders = Repo.all query

joeljackson

alias Ecto.Repo
query = from o in Rebirth.Order, []
orders = Repo.all query

joeljackson

try{Typekit.load({ async: false });}catch(e){}

var sheet = (function() {
	var style = document.createElement("style");
	style.appendChild(document.createTextNode(""));
	document.head.appendChild(style);

	return style.sheet;
})();