lucaspolo

import os
import time

from celery import Celery

app = Celery('tasks', broker=os.getenv('BROKER_URL', 'redis://localhost/0'))

@app.task
def envia_email():
  ...

lucaspolo

import os
import time

from celery import Celery

app = Celery('tasks', broker=os.getenv('BROKER_URL', 'redis://localhost/0'))

@app.task
def envia_email():
    lista_de_usuarios = [

lucaspolo

lucaspolo@notebook:~$ hyperfine --warmup 3 python fibonacci.py 
Benchmark #1: python
  Time (mean ± σ):      44.2 ms ±   1.8 ms    [User: 49.1 ms, System: 8.8 ms]
  Range (min … max):    41.2 ms …  51.0 ms    67 runs
 
Benchmark #2: fibonacci.py
Error: Command terminated with non-zero exit code. Use the '-i'/'--ignore-failure' option if you want to ignore this. Alternatively, use the '--show-output' option to debug what went wrong.

lucaspolo

lucaspolo@notebook:~$ hyperfine python fibonacci.py 
Benchmark #1: python
  Time (mean ± σ):      44.9 ms ±   4.5 ms    [User: 50.8 ms, System: 8.2 ms]
  Range (min … max):    42.1 ms …  71.3 ms    41 runs
 
  Warning: The first benchmarking run for this command was significantly slower than the rest (71.3 ms). This could be caused by (filesystem) caches that were not filled until after the first run. You should consider using the '--warmup' option to fill those caches before the actual benchmark. Alternatively, use the '--prepare' option to clear the caches before each timing run.
 
Benchmark #2: fibonacci.py
Error: Command terminated with non-zero exit code. Use the '-i'/'--ignore-failure' option if you want to ignore this. Alternatively, use the '--show-output' option to debug what went wrong.
lucaspolo@notebook:~$ 

lucaspolo

object CasamentoDePadroes extends App {
  // Pattern matching apicado a recuperação de valores de uma lista
  val lista = List(1,2,3,4,5)
  val primeiro :: resto = lista

  println(primeiro)
  println(resto)

  // Utilizando guardas como filtro
  val pares = for {

lucaspolo

object CasamentoDePadroes extends App {
  case class Pessoa(nome: String, idade: Int);

  var pessoa = Pessoa("Linus", 51);

  var mensagem = pessoa match {
    case Pessoa("Lucas", _) => "Olá programador Lucas"
    case Pessoa(nome, idade) if idade > 50 => s"Olá Sr(a) $nome"
    case Pessoa(nome, _) => s"Olá $nome"
    case _: Pessoa => "Olá desconhecido"

lucaspolo

object CasamentoDePadroes extends App {
  case class Pessoa(nome: String, idade: Int);

  var pessoa = Pessoa("Linus", 51);

  pessoa match {
    case Pessoa("Lucas", _) => println("Olá programador Lucas")
    case Pessoa(nome, idade) if idade > 50 => println(s"Olá Sr(a) $nome")
    case Pessoa(nome, _) => println(s"Olá $nome")
    case _: Pessoa => println("Olá desconhecido")

lucaspolo

object CasamentoDePadroes extends App {
  var x: Any = "Desconhecido porém string";

  x match {
    case "oi" => println("Hello")
    case "Scala" => println("Hello Scala")
    case value: String => println(s"This is a string: $value")
    case _ => println("A strange object")
  }
}

lucaspolo

package com.company;

public class Main {
    public enum Veiculos {
        BICICLETA(0), MOTO(1), CARRO(2), ONIBUS(4), CAMINHAO(3);

        private final float tarifa;

        Veiculos(float tarifa) {
            this.tarifa = tarifa;

lucaspolo

package com.company;

public class Main {
    public enum Veiculos {
        BICICLETA, MOTO, CARRO, ONIBUS, CAMINHAO
    }

    public static void main(String[] args) {
        var veiculo = Veiculos.CAMINHAO;
        float valorPedagio = switch (veiculo) {