1. MacRuby & RubyMotion
Programming OS X and iOS apps with Ruby

2. Hi
I’m @MarkVillacampa

3. Blame
Him

4. MacRuby
An implementation of the Ruby language that
runs on top of the Objective-C runtime and
garbage collection (libauto)
Based on Ruby 1.9
Uses LLVM and supports both ahead-of-time
and just-in-time compilation
Ships with OS X 10.7 Lion!!

5. MacRuby
Started by Laurent Sansonetti inside Apple
Initial 0.1 release in March 2008
Latest stable release (0.10) March 2011
Nightlies are very stable (0.12)
http://macruby.org/
https://github.com/MacRuby/MacRuby

6. Cocoa
Apple's native object-oriented API for the
Mac OS X operating system
Foundation Kit + Application Kit + Core Data
frameworks
Cocoa Touch: Includes gesture recognition
and different UI to use in iOS

8. How to install
Install XCode (Mac App Store, Free)
Install Command Line Tools (Preferences >
Downloads)
Install MacRuby Nightly
If you are in OS X 10.6.8, install Bridge
Support Preview 3
https://github.com/MacRuby/MacRuby/wiki/Setting-up-MacRuby

9. Key concepts:
MacRuby objects are Objective-C objects
>> "Hello Madridrb!".class.ancestors
=> [String, NSMutableString, NSString, Comparable, NSObject,
Kernel]
Can use Ruby & Cocoa methods
>> "Hello Madridrb!".upcase <- Ruby
=> "HELLO MADRIDRB!"
>> "Hello Madridrb!".uppercaseString <- Cocoa
=> "HELLO MADRIDRB!"

10. Key concepts:
Cocoa classes need to be allocated and initialized
>> NSString.alloc.initWithString(“Hello Madridrb!”)
=> "Hello Madridrb!"
New method syntax: named parameters
>> NSDictionary.alloc.initWithObjects(["foo"], forKeys:
["bar"])
=> {"foo"=>"bar"}

11. 1. The syntax

12. Objective-C:
NSMutableDictionary *dict = [NSMutableDictionary dictionary];
[dict setObject:[NSArray arrayWithObjects:@"bar", @"baz"]
forKey:@"foo"];
[dict setObject:[NSNumber numberWithInt:2] forKey:@"oof"];
Ruby:
a = {"foo" => ["bar", "baz"], "oof" => 2}

13. Objective-C:
NSMutableDictionary *dict = [NSMutableDictionary dictionary];
[dict setObject:[NSArray arrayWithObjects:@"bar", @"baz"]
forKey:@"foo"];
[dict setObject:[NSNumber numberWithInt:2] forKey:@"oof"];
Ruby:
a = {"foo" => ["bar", "baz"], "oof" => 2}

14. 2. XCode

16. Interface Builder

17. 3. REPL Console
( Read Eval Print Loop )

19. 4. Gems

20. Any gem that works with Ruby 1.9
should work with MacRuby

21. 5. Behaviour-Driven Development

22. MacBacon
A small RSpec clone, with NSRunLoop
powers.
https://github.com/alloy/MacBacon

23. 6. Mac App Store

24. http://briquetteapp.com/

25. http://shop.oreilly.com/product/
0636920000723.do
http://manning.com/lim/

26. RubyMotion
Built on top of MacRuby
Uses a new LLVM-based static compiler that
generates optimized machine code
Memory model similar to Objective-C ARC
Based on Rake
http://www.rubymotion.com/

27. RubyMotion
Commercial product. Educational licenses
available at discounted price.
Laurent Sansonetti left Apple to work on it.
Released May 3rd, 2012
Fast growing community!

29. $ motion create HelloMadridrb
HelloMadridrb
app .rb files
app_delegate.rb Main delegate
resources Images, Sounds, .xib files
spec Tests
main_spec.rb
.gitignore
Rakefile
Configuration file

30. 1. Interactive Console

31. Holding and clicking in a
UI element assigns that
element to the self variable in
the console

32. 2. CocoaPods

33. CocoaPods is like RubyGems but for Ojective-C
projects.
$ sudo gem install cocoapods
$ pod setup
$ sudo gem install motion-cocoapods
Choose a pod:
https://github.com/CocoaPods/Specs
Edit Rakefile:
require 'motion-cocoapods'
Motion::Project::App.setup do |app|
# ...
app.pods do
dependency 'JSONKit'
end
end

34. 3. TestFlight

35. TestFlight helps you distribute development builds
of your app to your betatesters.
$ sudo gem install motion-testflight
Download TestFlight’s SDK and put it in the “vendor” directory inside your
app. http://testflightapp.com/sdk/download
Edit Rakefile:
require 'motion-testflight'
Motion::Project::App.setup do |app|
# ...
app.testflight.sdk = 'vendor/TestFlight'
app.testflight.api_token = '<API token>'
app.testflight.team_token = '<team token>'
end
Run:
$ rake testflight notes='First release!'

36. 4. App Store

37. Mustachio
http://itunes.apple.com/us/app/
mustachio/id525324802
https://github.com/HipByte/
Mustachio

38. Demo time

39. Questions?

40. No, it doesn’t run Rails.