RubyならMacでしょう Ruby, on your Mac of course

1. Ruby Mac
Ruby, on your Mac of course
Vincent Isambart

2. Ruby Mac
Ruby, on your Mac of course
/ Self-introduction
MacRuby / MacRuby’s story
MacRuby / In development
Q&A

3. Self-introduction
Vincent Isambart (IRC: scritch)
@vincentisambart
2003: Ruby / Discovered Ruby
2006: RHG / RHG translation
2008-2009: MacRuby

4. Mac Ruby
Ruby on Mac
% ruby -v
ruby 1.8.6
(2008-08-11 patchlevel 287)

5. RubyCocoa

6. RubyCocoa
RubyCocoa’s problems
Threading
Method names
Speed
Type conversion

7. 2008: MacRuby
MacRuby starts
(Mac)
Ruby
Goal: Best Ruby implementation for
the (Mac) desktop

8. Ruby 1.9
Why based on Ruby 1.9?
1.9
1.9 was unstable
1.9
Some features Few people knew 1.9
were not finished

9. Ruby 1.9
Why based on Ruby 1.9?
Starting from scratch
is too much work
1.9 Ruby 1.9 1.8
1.9 is Ruby’s future 1.9 is better than 1.8
Open-source

10. 1.9 MacRuby 0.4
Diff between 1.9 and MR 0.4
Ruby GC Obj-C GC
Ruby object Obj-C object
Ruby core class Obj-C core class

11. ( )
What did not change (much)
/ Parser
YARV
Ruby
Ruby standard library

12. Cocoa more Ruby-like
HotCocoa

13. MacRuby 0.4
MacRuby 0.4’s problems
Incompatibilities Threading
with 1.9
Merging 1.9 Speed

14. 12 : 0.5
Dec 2009: 0.5 dev started
0.4
Goal: Solving all 0.4’s problems

15. How?
VM
By creating a new VM
rm vm*.c # bye bye YARV

16. Speed and threads
Calculations are
super-fast
You can use multiple cores

17. Testing
test-vm.rb
RubySpec

18. AOT compiling
Fast start time
Hide the code

19. C
Stop creating C libraries
ruby-ffi

20. MacRuby 0.5
MacRuby 0.5’s weak points
Memory allocation is slow
Not very portable
32
Does not work in 32 bits
Hard to compile
C
JIT
C extensions don’t work JIT takes time
Rake does not work properly

21. MacRuby 0.5
MacRuby 0.5’s weak points
In development

22. MacRuby 0.5
MacRuby 0.5’s weak points
Memory allocation is slow
Not very portable
32
Does not work in 32 bits
Hard to compile
C
JIT
C extensions don’t work JIT takes time
Rake does not work properly

23. Cocoa
Creating a Cocoa application
: RubyCocoa
: MacRuby 0.4
: MacRuby 0.5

24. If you want to help
1.9 / Learn 1.9
RubySpec / Help RubySpec
Ruby / Make pure Ruby libs
/ Make tutorials

25. Q&A
http://www.macruby.org
twitter: @macruby
IRC: #ruby-osx (freenode)

26. FAQ
iPhone...
CPU
The CPU is different
Investigating
JIT
Can’t use the JIT ObjC GC
Can’t use the ObjC GC