tiagopog

# rails g paperclip {{model_name}} avatar && rake db:migrate
module Avatar
  extend ActiveSupport::Concern

  included do
    avatar_options = WMR::Constants::AVATAR_OPTIONS

    if Rails.env.production?
      avatar_options.merge!(WMR::Constants::S3_CREDENTIALS)
    end

tiagopog

require 'benchmark'
require 'parallel'

def expensive_calculation(letter)
  letter *= 1_000_000_000
  puts letter[rand(0..999_999_999)]
end

Benchmark.bm do |x|
  x.report("With Parallel: \n", in_thread: 3) do

tiagopog

# Each object in Ruby also has its own metaclass,
# a Class that can have methods, but is only attached to the object itself.

matz = Object.new

def matz.speak
  "Place your burden to machine's shoulders"
end

# What's going on here is that we're adding the speak method to matz's 

tiagopog

// Old way...
function Person(name) {
  this._name = name;
};

Person.prototype.getName = function() {
  return this._name;
};

person = new Person('Foo');

tiagopog

Pilha de linguagens pretendida para os próximos dois anos (ordem de relevância):

• Ruby
• Execução: interpretada (script);
• Paradigma: orientada a objetos;
• Tipagem: dinâmica/forte;
• Motivação: diversão, produtividade, prototipação e aspectos gerais.
• Go
  • Execução: compilada;
• Paradigma: multi-paradigma;

tiagopog

worker_processes  1;
pid /var/run/nginx.pid;

events {
  worker_connections  1024;
}

http {
    include       mime.types;
    default_type  application/octet-stream;

tiagopog

require "./lib/mailer"
require "benchmark"
require "celluloid"

class MailWorker
  include Celluloid

  def send_email(id)
    Mailer.deliver do 
      from    "eki_#{id}@eqbalq.com"

tiagopog

require 'memory_profiler'

report = MemoryProfiler.report do
  a = 0
  b = 1
  1_000.times do |e|
    c = a + b
    a = b
    b = c
    puts c # Check how large is the allocation of memory for String

tiagopog

class TipCalculator {
  let total: Double
  let taxPct: Double
  let subtotal: Double
  
  // Class constructor:
  init(total: Double, taxPct: Double) {
    // Here we need to use "self" so the compiler will not get confused about the variables with the same name:
    self.total = total
    self.taxPct = taxPct

tiagopog

class NamedShape {
    var numberOfSides = 0
    var name: String

    init(name: String) {
       self.name = name
    }

    func simpleDescription() -> String {
       return "A shape with \(numberOfSides) sides."