2009, o ano do Ruby on Rails no Brasil - CaelumDay 2009

2009, ano do Ruby on Rails no Brasil Sunday, November 8, 2009

Cauê Guerra caue.guerra@caelum.com.br @caueguerra Sunday, November 8, 2009

Sunday, November 8, 2009

Ruby Sunday, November 8, 2009

Yukihiro Matsumoto (Matz) “Often people, especially computer engineers, focus on the machines. But in fact we need to focus on humans, on how humans care about doing programming or operating the application of the machines. We are the masters. They are the slaves.” Sunday, November 8, 2009

Características Sunday, November 8, 2009

Características Orientada a Objetos 2.times { puts “Olá” } Sunday, November 8, 2009

Características Orientada a Objetos 2.times { puts “Olá” } Tipagem dinâmica @nome = “Cauê Guerra” Sunday, November 8, 2009

Características Orientada a Objetos 2.times { puts “Olá” } Tipagem dinâmica @nome = “Cauê Guerra” Meta-programação Código que gera código Sunday, November 8, 2009

Características Orientada a Objetos 2.times { puts “Olá” } Tipagem dinâmica @nome = “Cauê Guerra” Meta-programação Código que gera código Programação funcional Sunday, November 8, 2009

Exemplo Sunday, November 8, 2009

Java class CalculadorDeMDC { public int calcula(int a, int b) { if (b == 0) return a; else return calcula(b, a % b); } } CalculadorDeMDC calculador = new CalculadorDeMDC(); System.out.println(calculador.calcula(28, 7)); Sunday, November 8, 2009

Ruby class CalculadorDeMDC def calcula(a, b) if b == 0 a else calcula(b, a % b) end end end calculador = CalculadorDeMDC.new puts calculador.calcula(28, 7) Sunday, November 8, 2009

Um outro exemplo Sunday, November 8, 2009

Java public String[] paraMaiuscula(String[] palavras) { String[] resposta = new String[palavras.length]; for (int i = 0; i < palavras.length; i++) resposta[i] = palavras[i].toUpperCase(); return resposta; } Sunday, November 8, 2009

Ruby def paraMaiuscula(palavras) palavras.map { |palavra| palavra.upcase } end Sunday, November 8, 2009

“Tornar as coisas simples, fáceis; e as complexas, possíveis” Filosoﬁa Ruby Sunday, November 8, 2009

1995 Sunday, November 8, 2009

2001 Dave Thomas Sunday, November 8, 2009

RubyConf 2001 Sunday, November 8, 2009

http://www.ruby-lang.org Sunday, November 8, 2009

Thomas Enebo 2006 Sunday, November 8, 2009

WTF?!? Sunday, November 8, 2009

- Busca textual - Autenticação - Autorização - Processamento assíncrono - Mensageria - WebServices ... Sunday, November 8, 2009

http://rubyonrails.org/ Sunday, November 8, 2009

Pilares Sunday, November 8, 2009

CoC Convention over Conﬁguration Sunday, November 8, 2009

DRY Don’t Repeat Yourself Sunday, November 8, 2009

MVC Sunday, November 8, 2009

Browser Sunday, November 8, 2009

Browser ApplicationController Sunday, November 8, 2009

Browser ApplicationController Controller Sunday, November 8, 2009

Browser ApplicationController Controller Model Sunday, November 8, 2009

Browser ApplicationController Controller Model DB Sunday, November 8, 2009

Browser ApplicationController View Controller Model DB Sunday, November 8, 2009

Aplicação Conﬁgurações Schema evolution Testes Sunday, November 8, 2009

Controller Model View Sunday, November 8, 2009

Testes Sunday, November 8, 2009

Test All The Fucking Time! Testes Sunday, November 8, 2009

TDD Test Driven Development BDD Behavior Driven Development Sunday, November 8, 2009

RSpec it "should require acceptance of terms of service" do @job.attributes = valid_job_attributes.except(:terms_accepted) @job.should_not be_valid @job.terms_accepted = false @job.should_not be_valid @job.terms_accepted = true @job.should be_valid end Sunday, November 8, 2009

Cucumber Feature: Job listing In order to see the job offers in my area and start working As a user I want to see a list of jobs ﬁltered by type and location Scenario: Listing when there is no jobs Given there is no jobs When I go to "java" Then I should see "Desculpe, não existem vagas disponíveis." And the "OndeTrabalhar.com" ﬁeld should contain "java" Sunday, November 8, 2009

Rails 3 = + Sunday, November 8, 2009

Yehuda Katz Sunday, November 8, 2009

José Valim Sunday, November 8, 2009

Por que não aprender Rails? Sunday, November 8, 2009

Rails não escala! Sunday, November 8, 2009

Hoje o Redeparede.com serve 7,5 milhões de acessos por mês usando Ruby on Rails. Rails escala, depende de você! Sunday, November 8, 2009

“Basecamp is now handling more than 50 million Rails requests per week. We're peaking out at around 200 req/sec. Damn!” “Basecamp's average response time is 90ms and 87% of all requests ﬁnish in less than 200ms.” Sunday, November 8, 2009

Não conheço ninguém que use Rails Sunday, November 8, 2009

http://www.workingwithrails.com/high-proﬁle-organisations Sunday, November 8, 2009

Martin Fowler 41 projetos Ruby de 2006 a 2008 - a maioria usando Rails Sunday, November 8, 2009

Ruby é mais produtivo? 13 5 5 3 2 1 1 Negativo 0 20% 50% 2X 5X 10X Sunday, November 8, 2009

Ruby foi a escolha certa? não 5 sim 36 Sunday, November 8, 2009

“As empresas estão cheias de guardas, impedindo as pessoas de mudar!” Sunday, November 8, 2009

Regis Pires IFPI - Piauí Sunday, November 8, 2009

Formação Rails RR-71: Desenvolvimento Ágil para RR-75: Ruby e Rails avançados: Web 2.0 com Ruby on Rails lidando com problemas do dia a dia Sunday, November 8, 2009

150 113 113 75 72 38 2009 0 2008 10 2007 Sunday, November 8, 2009

E daí? Sunday, November 8, 2009

http://ondetrabalhar.com/ruby+ou+rails Sunday, November 8, 2009

http://slideshare.net/caueguerra Sunday, November 8, 2009

2009, o ano do Ruby on Rails no Brasil - CaelumDay 2009

by Caue Guerra

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