IronRuby – A brave new world for .Net@Ben_Hall, Developer\tester, 7digital.comBen@BenHall.me.uk Blog.BenHall.me.uk CodeBetter.com/blogs/BenHall

London (UK) based C# MVPWeb Developer @ 7digital.com

Working on a number of Open Source Projects

Co-Author of Testing ASP.net Web Applications

http://www.testingaspnet.com

Agenda

• Ruby• IronRuby• DLR• Merging IronRuby and C#

What is Ruby?

Why?

Right language for the right job

Everything is an object

“Hello World”.upcase

[5,3,4,1,6].sort

10.times { |i| puts “Loop count: #{i}” }

Blocks

10.times do |i| puts “Loop count: #{i}”

end

Loop count: 0Loop count: 1Loop count: 2Loop count: 3Loop count: 4Loop count: 5Loop count: 6Loop count: 7Loop count: 8Loop count: 9

Blocks

search_engines =   %W[Google Yahoo Bing].map do |engine|    "http://www.#{engine.downcase}.com"  end

search_engines = [ ‘http://www.google.com’, ‘http://www.yahoo.com’, ‘http://www.bing.com’]

Natural Programming

x = [1,2,3]y = [4,5,6]

>>> x + y => [1,2,3,4,5,6]

Duck Typing

# Message sends itself via some transport protocol

class Message def publish(transport) puts transport.send(self) endend

http://www.flickr.com/photos/normis/337183421/

Duck Typing

class Queue def send(message) @server.open @server.issue(message) @server.close endend

Duck Typing

class SmtpService def send(message) @service.post(message) endend

Duck Typing

m = Message.newm.subject = “Hello TechDays!”q = Queue.news = SmtpService.newm.publish(q)m.publish(s)

Duck Typing

class Postman def send(message) phone_number = 012398622 @john.call(phone_number) endend

m.publish(Postman.new)

Mixins

class ProductPage < CMS::BasePage

include Editable    include Themeable

include DroppableCustomisations

end

Extendable

class Fixnum def odd?() !even? end def even?() self % 2 == 0 endend

>>> 1.odd?

=> true>>>

1.even?=> false>>>

2.odd?=> false>>>

2.even?=> true

Blended of multiple languages

“Ruby is simple in appearance, but is very complex inside, just like our human body”

Yukihiro “matz” Matsumoto – Creator of Ruby

“trying to make Ruby natural, not simple”

Yukihiro “matz” Matsumoto – Creator of Ruby

If that’s

Ruby

http://www.flickr.com/photos/bflv/3328427869/

What’s IronRuby?

Static language => Dynamic language

http://github.com/BenHall/IronRuby_CSharp_Type_Interop

Ruby Frameworks - Exposing NHibernate domain model in a ‘RESTful’ way

http://github.com/BenHall/IronRestfulRails

@post = r.GetPost("PostID", params[:id].to_i)

class PostRepository def method_missing(m, *args) columnName = m.id2name.sub(/find_by_/, "") get_post columnName, *args endend

@post = r.find_by_PostID 1@post = r.find_by_Title “Post 1"http://github.com/BenHall/IronRestfulRails

Ruby Frameworks - erb

http://github.com/BenHall/IronRuby_Erb_Templating

C# Frameworks - WPF

C# Frameworks - MeerPush

http://github.com/BenHall/MeerPush

What is the DLR?

http://www.flickr.com/photos/lastrounds/3199561205/sizes/o/

IronRuby

DLR

CLR

IronPython ?

http://www.flickr.com/photos/mendhak/2117622450/sizes/o/

Combing the two

worlds

Embedding IronRuby into C#

http://github.com/BenHall/EmbeddedIronRuby

Extending C# applications using Ruby and MEF

http://github.com/BenHall/ExtendViaMEF

Data Gen Screenshot

Reflector Screenshot

Resolver Systems

C# 4.0 - dynamic

http://github.com/BenHall/IronRuby_CSharp_4

class Person def say_hello puts "Hello world from IronRuby!" endend

static void Main(string[] args) { Console.WriteLine("Executing from C#"); ScriptRuntime runtime = IronRuby.Ruby.CreateRuntime(); ScriptScope scope = runtime.ExecuteFile("person.rb"); dynamic person = scope.Engine.Execute("Person.new"); person.say_hello();

Console.ReadLine(); }

Program.cs

person.rb

Testing C# applications

http://github.com/BenHall/wipflash_cucumber_driven_example

Ruby Everywhere!

change

How will the DLR

your world?

@Ben_HallBen@BenHall.me.ukBlog.BenHall.me.uk

http://lolcatgenerator.com/lolcat/120/

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