denisdefreyne

"orange" == "red"   # => false
1 + 3 == 4          # => true
12 - 1 != 10        # => true

denisdefreyne

17 == 17      # => true
false != 12   # => true
1.2 == 3.4    # => false

denisdefreyne

class Point
  attr_reader :x
  attr_reader :y

  def initialize(x, y)
    @x = x
    @y = y
  end
end

denisdefreyne

class Employee
  attr_reader :id
  attr_reader :name

  def initialize(id, name)
    @id = id
    @name = name
  end
end

denisdefreyne

# Find the book “Gödel, Escher, Bach”
repo = BookRepository.new
geb      = repo.find(isbn: "978-0-14-028920-6")
geb_also = repo.find(isbn: "978-0-14-028920-6")

geb == geb_also # => false?!

denisdefreyne

AMOUNT = 100_000_000

num_tuesday_boy = 0
num_tuesday_boy_and_two_boys = 0

AMOUNT.times do
  weekday1 = [:mon, :tue, :wed, :thu, :fri, :sat, :sun].sample
  weekday2 = [:mon, :tue, :wed, :thu, :fri, :sat, :sun].sample
  gender1 = [:boy, :girl].sample
  gender2 = [:boy, :girl].sample

denisdefreyne

# frozen_string_literal: true

source 'https://rubygems.org'

gem 'rubocop', '~> 1.25'

gem 'benchmark-ips', '~> 2.9'
gem 'descriptive_statistics', '~> 2.5'

denisdefreyne

Person = new Class {{

  firstName: :attr,

  lastName: :attr,

  fullName: function {
    `${this.firstName} ${this.lastName}`
  },

denisdefreyne

const input1 = [[3], [7, 4], [2, 4, 6], [8, 5, 9, 3]];

// This should totes be part of JavaScript by default.
const maxBy = (arr, fn) => {
  if (arr.length === 0) {
    throw new Error("no!! just no");
  }

  if (arr.length === 1) {
    return arr[0];

denisdefreyne

################################################################################
# Helper functions and constants

YES = [[]]
NO = []

IF =
  lambda do |val, if_yes, if_no|
    val.each { return if_yes.call }
    if_no.call