microsoft hellas dev days 09: ironruby

The .Net Ruby VM

Dec 2009Nikos Dimitrakopoulos

Nikos Dimitrakopoulos on IronRuby Microsoft DevDays 2009

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Me

Software developer Pamediakopes.gr (now) Rento.gr (past) Individually (past + now)

Bachelor in Telecommunications (main emphasis on web) from University of Peloponnese

Programming experience: Ruby C# JavaScript Java, Objective-C, …


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Pamediakopes.gr

Travel agency Airtickets Hotels Ferry Tickets Car rentals …

Travel agency. But: Fully electronic Fully automated (ok, almost…) A software house

Tools of the trade: C#, SQL, ASP.Net, JavaScript plus a million different technologies for internal stuff (ruby,

python, c, …)


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Scope

Do the laundry Sys-admin Do small but amazingly repetitive tasks

Prototype – fast! Don’t reinvent the wheel!

Combine 2, 3 or 10s of different software ecosystems! Testing

Unit Functional Integration Easier/less time consuming than C# with NUnit (for

example)


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So?

Ruby is amazingly good for: Sys-admin scripts Implementing simple (and not so simple)

libraries Rapid prototyping

Rails Sinatra …

Reusing code Strong community & ecosystem after 2004 (Rails) Almost everything is Open Source


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Ruby

A fully Object-Oriented Language Everything is an object

Functional Paradigm Lambdas / procs map(), each(), inject()

Fully Dynamic Interpreted Dynamically typed Totally extensible (even core classes)


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Ruby

Cross platform Open source Multiple VMs

Vanilla Ruby (MRI, aka Matz’s Original Interpreter) Runs on all platforms C bindings

JRuby (On JVM, aka the Java Virtual Machine) Runs where Java Runs Java bindings

MacRuby (On Mac OS X) Runs on Mac OS X Objective-C & Cocoa bindings


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Ruby

Origins in Japan Zen is everywhere in the language

Simple Effective “No-fluff”


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Demo!


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Famous quotes

It doesn’t scale It’s slow It’s immature Not enterprise …


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But

jRuby MacRuby Rubinius MagLev IronRuby


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IronRuby


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What is IronRuby

An alternative Ruby VM Implemented on top of the DLR Tight integration with .Net Part of the “Iron” languages

implemented in .Net Python Ruby LISP …


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A Ruby VM

Ruby interpreter (compliant with v 1.8.6) Faster than vanilla MRI Ruby (usually) Standard tools included:

Console (irb) Libraries (rubygems) Documentation (ri / RDoc)


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.Net Integration

Interoperability with .Net Consume all the C# code you want!

The huge .Net library ecosystem External .Net libraries Custom / existing C# code


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Additionally

“Translations” of idioms: object.SomeMethod() <-> object.some_method System.Core <-> System::Core

C# lambdas and delegates <-> Ruby clojures

>>> l = System::Byte.instance_methods(false).last=> 'get_type_code'

>>> l.ruby_name=> "get_type_code"

>>> l.clr_name=> "GetTypeCode"


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# Demo


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.Net Integration

Test .Net code with Cucumber & RSpec!


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# Demo


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.Net Integration

Extend existing .Net classes the ruby way!


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.Net Integration

Call ruby code from .Net!


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# Demo


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.Net Integration

Deploy on .Net infrastructure Web apps on IIS (Rails on .Net!) Consume Azure services! Use .Net services

SQL Office Active Directory Exchange etc...


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.Net Integration

Deploy on .Net infrastructure Desktop applications on Windows Desktop applications on everywhere (Mono)


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Additionally

Interoperability with the other scripting languages! Python …

Use code also from there!


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Silverlight

Silverlight integration Write ruby instead of javascript in your

pages! (Gestalt project)


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Silverlight


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Limitations

No support for native C gems Some rough edges in interoperability


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Status

RC1 Runs on .Net 3.5 & .Net 4.0 (different

builds) Passing ~93% of the Ruby specs Already faster than vanilla Ruby (in a lot of

cases) 1.0 expected soon

Full compatibility with Ruby 1.8.6 Common build for .Net 3.5 & .Net 4.0

(hopefully)


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Status


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Future

Speed Be on par with JRuby

Ruby 1.9 (maybe?) ???


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Thanks!

Thanks a lot & happy hacking!


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Links

IronRuby: http://ironruby.net/ http://ironruby.codeplex.com/

Rubyst.es http://rubyst.es http://groups.google.com/ruby-hellug

Pamediakopes http://www.pamediakopes.gr http://www.airtickets24.com

Me http://blog.nikosd.com http://twitter.com/nikosd nospam - at - nikosd - dom – com

Code samples : http://nikosd.com/f/ironruby-code-samples.zip

http://ironruby.net/

http://ironruby.codeplex.com/

http://rubyst.es/

http://groups.google.com/ruby-hellug

http://www.pamediakopes.gr/

http://www.airtickets24.com/

http://blog.nikosd.com/

http://twitter.com/nikosd

http://nikosd.com/ironruby-code-samples.zip

http://nikosd.com/ironruby-code-samples.zip

microsoft hellas dev days 09: ironruby

Technology