Venturing Into The Wild: A .NET Developer's Experience As A Ruby Developer

From CodeMash 2011

Transcript

1. by Jon Kruger
2. Independent consultant in Columbus, OH .NET, Ruby on Rails, Agile Email: jon@jonkruger.com Twitter: @JonKruger Blog: http://jonkruger.com/blog
4. public void Page_Load(Object sender, EventArgs e) { }
7. “Sometimes I want to do Ruby because it means that I’m more likely to be able to do TDD.” -- Greg Malcolm
8. “I feel like the shackles have been taken off.” -- Leon Gersing
9. public interface IGetObjectService<T> where T : EntityBase { public T Get(int id); public IList<T> GetAll(); } public class GetObjectService<T> : IGetObjectService<T> { public GetObjectService(IRepository<T> repository) { } public T Get(int id) { ... } public IList<T> GetAll() { ... } }
13. ASP .NET MVC and Rails are very similar
14. Learning the Ruby/UNIX way
15. You can do more with less code
16. create table Users ( id int, name varchar(100), user_status_id int, created_at datetime, updated_at datetime ) class User < ActiveRecord::Base belongs_to :user_status has_many :roles, :through => :user_roles validates_length_of :name, :maximum => 100 named_scope :active, :conditions => ["user_status.id = ?", UserStatus::ACTIVE] end
17. create table Users ( id int, name varchar(100), user_status_id int, created_at datetime, updated_at datetime ) class User < ActiveRecord::Base belongs_to :user_status has_many :roles, :through => :user_roles validates_length_of :name, :maximum => 100 named_scope :active, :conditions => ["user_status.id = ?", UserStatus::ACTIVE] end
18. create table Users ( id int, name varchar(100), user_status_id int, created_at datetime, updated_at datetime ) class User < ActiveRecord::Base belongs_to :user_status has_many :roles, :through => :user_roles validates_length_of :name, :maximum => 100 named_scope :active, :conditions => ["user_status.id = ?", UserStatus::ACTIVE] end
19. create table Users ( id int, name varchar(100), user_status_id int, created_at datetime, updated_at datetime ) class User < ActiveRecord::Base belongs_to :user_status has_many :roles, :through => :user_roles validates_length_of :name, :maximum => 100 named_scope :active, :conditions => ["user_status.id = ?", UserStatus::ACTIVE] end
20. create table Users ( id int, name varchar(100), user_status_id int, created_at datetime, updated_at datetime ) class User < ActiveRecord::Base belongs_to :user_status has_many :roles, :through => :user_roles validates_length_of :name, :maximum => 100 named_scope :active, :conditions => ["user_status.id = ?", UserStatus::ACTIVE] end
21. create table Users ( id int, name varchar(100), user_status_id int, created_at datetime, updated_at datetime ) class User < ActiveRecord::Base belongs_to :user_status has_many :roles, :through => :user_roles validates_length_of :name, :maximum => 100 named_scope :active, :conditions => ["user_status.id = ?", UserStatus::ACTIVE] end
22. If it’s hard, you’re probably doing it wrong
23. Innovation is everywhere
24. Patterns and “best practices” are different between static and dynamic languages
25. public class Employee { public static Employee Load(int id) { ... } public bool Save() { ... } public bool Delete() { ... } }  How do I stub out the Load method in a test?  How can I implement cross-cutting concerns (e.g. caching when saving) without duplicating code?
26.  In Ruby, I can stub out class methods (i.e. static methods)
27. class Employee < ActiveRecord::Base include Cacheable end module Cacheable def save Cache.save(self) super end end  In Ruby, I can mix in modules that will modify the class
30. Twitter Github Hulu Groupon
31.  Rails for .NET Developers  by Jeff Cohen and Brian Eng  Agile Web Development With Rails  by Sam Ruby, Dave Thomas, David Heinemeier Hansson  Programming Ruby 1.9 (aka the “Pickaxe” book)  by Dave Thomas, with Chad Fowler and Andy Hunt  All found at http://pragprog.com
32.  Ruby Koans  http://rubykoans.com  Railscasts  http://railscasts.com  Why’s Poignant Guide To Ruby  http://mislav.uniqpath.com/poignant-guide/
33.  Email: jon@jonkruger.com  Twitter: @JonKruger  Blog: http://jonkruger.com/blog