leandronsp

require 'test/unit'
require 'digest'
require 'date'

class PurchasesChecker
  attr_reader :authorizations

  def initialize
    @authorizations = []
    @purchases_idx = {}

leandronsp

class Integer
  def method_missing(m, right)
    return if m != :sum

    bitwise_sum(self, right)
  end

  private

  def bitwise_sum(left, right)

leandronsp

OOP in Bash script

Wait, what?

Inspired by this awesome article.

Prelude about OOP

According to wikipedia, OOP is a programming paradigm or technique based on the concept of "objects". The object structure contain data and behaviour.

Data is the object's state, which should be isolated and must be private.

leandronsp

#!/bin/bash

## Create the response FIFO
rm -f response
mkfifo response

function handle_GET_home() {
  RESPONSE=$(cat home.html | \
    sed "s/{{$COOKIE_NAME}}/$COOKIE_VALUE/")
}

leandronsp

{
  "annotations": {
    "list": [
      {
        "builtIn": 1,
        "datasource": {
          "type": "grafana",
          "uid": "-- Grafana --"
        },
        "enable": true,

leandronsp

DROP INDEX IF EXISTS transfers_in, transfers_out;
CREATE INDEX transfers_in ON transfers (target_account_id);
CREATE INDEX transfers_out ON transfers (source_account_id);

leandronsp

class Dog
  def name
    # retorna variável de instância
    @name
  end
end

doguinho = Dog.new

# Chamando método de instância

leandronsp

require 'socket'
require 'cgi'

PORT = 3000
socket = TCPServer.new('0.0.0.0', PORT)

puts "Listening to the port #{PORT}..."

loop do
  # Wait for a new TCP connection..."

leandronsp

class Cractor
  def initialize(*args, &block)
    @inbox  = Queue.new
    @outbox = Queue.new

    Thread.new do
      result = yield(self, *args)

      self.yield(result)
    end

leandronsp

/* 
  Reverse a word 
 */
const reverse = (word) => {
  const letters = word.split('')
  const lastIdx = letters.length - 1

  return letters
    .map((letter, idx) => { return letters[lastIdx - idx] })
    .join('')