teamon

// akka-actor cheatsheet
// extract from http://doc.akka.io/actors-scala

class MyActor extends Actor { // Logging is included in Actor
    // messages
    def receive = {
        case "foo" => 
            doBar
            
        case "logging" =>

teamon

@doc """
Validate each array element with validator

Examples
  iex> changeset
  ...> |> validate_each(:emails, &validate_email)
  ...> |> validate_each(:phones, &validate_format(&1, &2, ~r/\d+/))
  ...> |> validate_each(:phones, &validate_length/3, is: 4)
"""
def validate_each(changeset, field, validator, opts) do

teamon

# gem "ruby-prof"


  around_filter :profiler

  def profiler(&block)
    data = RubyProf::Profile.profile(&block)
    filepath = Rails.root.join("tmp", "profiler.html")
    File.open(filepath, "w") do |f|
      RubyProf::CallStackPrinter.new(data).print(f)

teamon

1. Download and install d2xx drivers http://www.ftdichip.com/Drivers/D2XX/MacOSX/D2XX1.0.4.dmg (from http://www.ftdichip.com/Drivers/D2XX.htm)


2. Install OpenOCD from homebrew (http://mxcl.github.com/homebrew/)

  $ brew install openocd --enable-ft2232_libftdi

teamon

// POST http://staginginfo.marketmaker4.com/api/v1/projects.json
{
    "project": {
        "actor_uid": "7ajxdiGvTvZ8DJoT2uY4",
        "list": {
            "name": "Test 1329343404",
            "companies": [
                {
                    "contact_person": {
                        "email": "dellis@monachem.mc",

teamon

# Much simplified version based on https://github.com/zhangsoledad/alchemic_avatar
# Avatar.generate/2 returns a Plug.Upload that can be passed directly
# into Ecto.Changeset (as for example fallback image)

defmodule Avatar do
  @defaults [
    size:             300,
    font_path:        Application.app_dir(:my_app, "priv/fonts/Roboto.ttf"),
    font_size:        40,
    font_weight:      500,

teamon

defmodule Twin do
  @moduledoc """
  See http://teamon.eu/2017/different-approach-to-elixir-mocks-doubles/
  """

  ## PROXY

  defmodule Proxy do
    def unquote(:"$handle_undefined_function")(fun, args) do
      [{__MODULE__, mod} | rest] = Enum.reverse(args)

teamon

defmodule Test do
  def run(x) do
    with :error <- try_one(x),
         :error <- try_two(x),
         :error <- try_three(x) do
      :error
    end
  end

  defp try_one(1), do: {:ok, "one"}

teamon

⌘ ~/code/tesla (master) λ mix xref graph
lib/tesla.ex
├── lib/tesla/adapter/hackney.ex (compile)
│   ├── lib/tesla/multipart.ex (compile)
│   └── lib/tesla.ex
├── lib/tesla/adapter/httpc.ex (compile)
│   ├── lib/tesla/adapter/shared.ex (compile)
│   ├── lib/tesla/multipart.ex (compile)
│   └── lib/tesla.ex
├── lib/tesla/adapter/ibrowse.ex (compile)

teamon

defmodule Sync.Middleware.RateLimit do
  @defaults [
    delay:        2000,
    max_retries:  5
  ]

  def call(env, next, opts) do
    opts        = opts || []
    delay       = Keyword.get(opts, :delay,       @defaults[:delay])
    max_retries = Keyword.get(opts, :max_retries, @defaults[:max_retries])