This document introduces MacRuby, a Ruby implementation that allows Ruby code to be used to script and build applications for Mac OS X. MacRuby provides a complete Ruby 1.9 environment and allows Ruby code to interface with Cocoa and Objective-C to build graphical user interface applications. Performance benchmarks show that MacRuby code runs nearly as fast as native Objective-C. MacRuby is currently available as a preview release but will be included in Mac OS X 10.7 Lion.

1. GUI Programming with
MacRuby

2. GUI Programming with
MacRuby
Who?
What?
When?
Where?
Why?
How?

3. Who?

4. Erik Michaels-Ober?

5. sferik
on Twitter, GitHub, Gmail, IRC, &c.

6. Code for America
APPLY WITHIN

7. I’ve committed to...
rails oauth2 rvm
rails_admin faraday bunder
merb_admin thor travis-ci
twitter multi_json dummy_data
twurl multi_xml git-pulls
simple_oauth octokit mlb

8. HubCap

9. Who else?
@lrz @benstiglitz
@merbist @importantshock
@rich_kilmer @naixn
@alloy @watson1978
@vincentisambart @Psychs
@macruby macruby-devel

10. What?

11. What
MacRuby
1. A complete implementation of Ruby 1.9

12. Ruby apps MacRuby apps

13. DEMO

14. What
MacRuby
1. A complete implementation of Ruby 1.9
2. Allows you to script existing Mac apps
3. Allows you to create new Mac apps

15. Let me tell you a
secret...

17. AppleScript

18. Objective-C

19. Ruby Method Invocation
object.method parameter

20. Objective-C Method Invocation
[object method:parameter];

21. Ruby Array Initialization and Assignment
array = []

22. Objective-C Array Initialization and Assignment
NSMutableArray *array =
[[NSMutableArray alloc] init];

23. RubyCocoa

25. MacRuby Hello World
require 'hotcocoa'
include HotCocoa
application do |app|
win = window :size => [100,50]
b = button :title => 'Hello'
b.on_action { puts 'World!' }
win << b
end

26. RubyCocoa Hello World
require 'osx/cocoa'
include OSX
app = NSApplication.sharedApplication
win = NSWindow.alloc.initWithContentRect_styleMask_backing_defer(
[0, 0, 200, 60],
NSTitledWindowMask|NSClosableWindowMask|NSMiniaturizableWindowMask|NSResizableWindowMask,
NSBackingStoreBuffered, false)
win.title = 'Hello World'
button = NSButton.alloc.initWithFrame(NSZeroRect)
win.contentView.addSubview(button)
button.bezelStyle = NSRoundedBezelStyle
button.title = 'Hello!'
button.sizeToFit
button.frameOrigin = NSMakePoint((win.contentView.frameSize.width / 2.0) - (button.frameSize.width / 2.0),
(win.contentView.frameSize.height / 2.0) - (button.frameSize.height / 2.0))
button_controller = Object.new
def button_controller.sayHello(sender)
puts "Hello World!"
end
button.target = button_controller
button.action = 'sayHello:'
win.display
win.orderFrontRegardless
app.run

27. Java

28. Objective-J

29. When?

30. When
MacRuby
NOW!
Version 0.10
Version 1.0 coming soon

31. When
MacRuby
MacRuby will be included
with Mac OS X 10.7 Lion*
*currently as a private framework :(

32. Why?

33. Why
MacRuby
• You already know Ruby
• Use existing Ruby gems
• Ruby 1.9.2
• No GIL
• Multi-threaded generational GC
• Fast!

34. Performance Benchmarks
8
Ruby 1.9 MacRuby
7
6
5
4
3
2
1
app_answer app_tarai so_object vm1_ivar_set vm2_proc vm2_zsuper

35. Average Selling Price
$12.00
$10.00
$8.00
$6.00
$11.21
$4.00
$2.00 $4.19
$1.57
iPhone iPad Mac

36. How?

37. How
MacRuby
macruby.com

38. How
MacRuby
rvm get head
rvm install macruby

40. How
MacRuby
brew install llvm
port install llvm

42. How
MacRuby
Free with ADC account at
developer.apple.com/tools/xcode
or $4.99 on the Mac App Store

46. sferik
on Twitter, GitHub, Gmail, IRC, &c.