Onde mora a produtividade do Ruby on Rails?

Onde mora a produtividade do Ruby on Rails? Fabio Kung fabio.kung@caelum.com.br fabiokung @ twitter

Scaffold

Dinamismo

“Skilled programmers can write better programmers than they can hire” -- Giles Bowkett

Expressividade

Domain Specific Languages

10.days.ago

rufus-scheduler

rufus-scheduler scheduler.in '20m' do puts "go home" end scheduler.every '5m' do puts "check blood pressure" end

<div class="listitemchk"> <h3 class="smller"> <a href="URL_DO_PERFIL">QUEM_POSTOU</a>: </h3> <div class="para "> TEXTO DO RECADO <div class="selr"> ... </div> </div> </div>

<div class="listitemchk"> <h3 class="smller"> <a href="URL_DO_PERFIL">QUEM_POSTOU</a>: </h3> <div class="para "> TEXTO DO RECADO <div class="selr"> ... </div> </div> </div> doc = Hpricot(texto) doc / "div.listitemchk" / "h3.smller" / "a" doc / "div.listitemchk" / "div.para"

User.select { |m| m.name == 'jon' && m.age == 21 } "SELECT * FROM users WHERE users.name = 'jon' AND users.age = 21"

User.select { |m| m.name == 'jon' && m.age == 21 } "SELECT * FROM users WHERE users.name = 'jon' AND users.age = 21" User.select { |u| [1, 2, 3, 4].include? u.id } # SELECT * FROM users WHERE users.id IN (1,2,3,4) User.select { |u| u.friends.name =~ /bi/ } # SELECT * FROM users LEFT OUTER JOIN ... WHERE friends.name ~ 'bi'

class Company < ActiveRecord::Base has_many :jobs validates_presence_of :name validates_presence_of :contact_name validates_presence_of :ddd, :phone validates_uniqueness_of :cnpj validates_uniqueness_of :razao_social validates_numericality_of :ddd, :phone validates_unchangeable :email validates_unchangeable :cnpj acts_as_authentic end

Novos paradigmas

Erlang, Scala, ...

MapReduce

Enumerable

Ecossistema

TATFT (Test All The Fucking Time)

TDD class PostTest < ActiveSupport::TestCase def test_title post = Post.new :title => "Post 1" assert_equal "Post 1!", post.title end end

BDD class PostTest < ActiveSupport::TestCase def test_title_is_required post = Post.new assert ! post.valid? end end

Dúvidas? Obrigado! fabio.kung@caelum.com.br http://fabiokung.com twitter: fabiokung

Onde mora a produtividade do Ruby on Rails?

by Fabio Kung on Aug 09, 2009

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