tiagopog

FROM elixir:1.10.4

##
# Install system dependencies & tooling
##

RUN apt-get update
RUN apt-get -y upgrade

RUN apt-get install -y bash curl apt-utils build-essential inotify-tools

tiagopog

/*
 * 1. Create a sample table to store our bookings:
 */

> CREATE TABLE bookings (id INT, scheduled_date DATE, start_time TIMESTAMP, end_time TIMESTAMP, timezone_id VARCHAR(40))

> \d bookings
-- +----------------+-----------------------------+-------------+
-- | Column         | Type                        | Modifiers   |
-- |----------------+-----------------------------+-------------|

tiagopog

##
# Implementation
##

# config/config.exs
config :my_app, :kv_store_adapter, KVStore

defmodule KVStore do
  #...
end

tiagopog

# Configuration for Alacritty, the GPU enhanced terminal emulator.

# Any items in the `env` entry below will be added as
# environment variables. Some entries may override variables
# set by alacritty itself.
# env:
  # TERM variable
  #
  # This value is used to set the `$TERM` environment variable for
  # each instance of Alacritty. If it is not present, alacritty will

tiagopog

# An usual class is a subclass of object
class Human(object):
    # Defining class variables
    species = "H. Sapiens"

    def __init__(self, first_name, last_name):
        # Assign instance variables (also called attributes):
        self.__internal = "secret"   # Private attribute (externally accessed via: human._Human_internal)
        self.first_name = first_name # Public attribute (externally accessed via human.first_name)
        self.last_name = last_name # Since last_name has not a getter/setter below

tiagopog

type Query {
  allPersons(last: Int): [Person!]!
}

type Mutation {
  createPerson(name: String!, age: Int!): Person!
}

type Subscription {
  newPerson: Person!

tiagopog

class CreateFoo < ActiveRecord::Migration[5.0]
  def change
    create_table(:foos, force: true) do |t|
      t.text     :message, null: false
      t.datetime :created_at,  null: false
    end
  end
end

tiagopog

# Body-recursive
#
# Note: "+" is actually the last call, not calculate/1.
defmodule Fibonacci do
  def calculate(x) when x <= 2, do: 1
  def calculate(x), do: calculate(x - 1) + calculate(x - 2)
end

# Tail-recursive (Tail Call Optimization)
#

tiagopog

FROM elixir:1.4.2

ENV DEBIAN_FRONTEND=noninteractive
ENV HOME=/opt/app/ TERM=xterm

# Install Hex+Rebar
RUN mix local.hex --force && \
    mix local.rebar --force

WORKDIR /opt/app

tiagopog

defmodule Iugu.Resource do
  @moduledoc """
  Mixin module to easily include all the common functionality across the resources.
  """

  defmacro __using__([name: resource, actions: actions]) do
    quote do
      @derive [Poison.Encoder]
      @resource unquote(resource)
      defstruct unquote(fields(resource))