plukevdh

class Order
  has_one :receipt

  def paid(receipt)
    self.receipt = receipt
  end
end

class Receipt
  belongs_to :order

plukevdh

class Roda
  module RodaPlugins
    module Storage
      def self.configure(app, options: {})
        app.opts[:redis] = Redis.new url: (options[:redis_url] || ENV['REDIS_URL'])
      end
      
      # ...
      
    end

plukevdh

require 'benchmark/ips'

class Bass
  def initialize(hash)
    @hash = hash
  end
end

class Testing < Bass
  def []=(key, value)

plukevdh

defmodule Streem do
  def fb(n) when rem(n,15) == 0, do: "FizzBuzz"
  def fb(n) when rem(n,3) == 0, do: "Fizz"
  def fb(n) when rem(n,5) == 0, do: "Buzz"
  def fb(n), do: n
end

plukevdh

require 'sinatra/base'
require 'rbtrace'

proc {
  Dir.chdir("/tmp") do
    Dir.pwd
    Process.pid
    sleep 30

    class Demo < Sinatra::Base

plukevdh

GithubClient.config do |c|
  c.endpoint "https://api.github.com/"
  c.default_handler JSONHandler   # handles responses as JSON
end

class JSONHandler
  def initialize(data)
    @data = data
  end

plukevdh

# This...

def by_id(id)
  filter_by(:id, id)
end

def by_email(email)
  filter_by(:email, email)
end

plukevdh

iex(8)> list = [:width, 1024, :height, 768, :content_type, "image/png", :postProcess, true]
[:width, 1024, :height, 768, :content_type, "image/png", :postProcess, true]

iex(9)> is_list list
true

iex(10)> :erlang.list_to_binary list
** (ArgumentError) argument error
    :erlang.list_to_binary([:width, 1024, :height, 768, :content_type, "image/png", :postProcess, true])
    

plukevdh

namespace :db do
  desc "Run migrations"
  task :migrate, [:version] do |t, args|
    require "sequel"

    Sequel.extension :migration
    db = Sequel.connect(ENV.fetch("DATABASE_URL"))

    if args[:version]
      puts "Migrating to version #{args[:version]}"

plukevdh

$> rspec test_case.rb
F.

Failures:

  1) a failing case expects success
     Failure/Error: expect(production_code(response)).to eq 'success'

       expected: "success"
            got: "failure"