This document summarizes a presentation about RubyMotion and mruby. It discusses: 1. RubyMotion is a tool that allows developing native iOS apps using Ruby. mruby is a lightweight Ruby implementation that can be used with RubyMotion to focus on specific domains or avoid limitations. 2. The presenter demonstrates using mruby with RubyMotion to build apps for the 64-bit A7 processor. Benchmark results show mruby performs well. 3. Potential uses of combining mruby and RubyMotion mentioned include game scripting and developing domain-specific languages. Hiding code using mruby bytecode is also briefly discussed.

1. RubyConf Taiw
an
RubyMotion Gets A
Cool New Friend
mruby on iOS

2. Who Am I?

3. 古傑芳

4. @josephku

6. !WHAT’S
RUBYMOTION?
A Ruby toolchain for iOS
Develop and test native iOS app in Ruby
Based on MacRuby

7. Objective-C
Objective-C Runtime
iOS SDK
Foundation Framework

8. Objective-C
Objective-C Runtime
iOS SDK
Foundation Framework
RubyMotion

9. !
WHY RUBYMOTION?
100% native code
Keep your editor
App Store compliant

14. !
DEPLOYMENT
Deploy your app to beta testers by TestFlight
!
!
Deploy to App Store
$ rake archive:distribution
$ gem install motion-testflight
$ rake testflight notes='Orz'

15. !UPDATES FOR
RUBYMOTION
Xcode 5.1 & iOS 7.1 support
OS X support
Templates
Fix tons of memory management issues
Background fetching
Performance improvements

16. WWDC 2013 June 10-14

17. Super aggressive team!

18. Babe, Let’s Rock!!

19. class Test
def test
foo = 42
Proc.new { foo + 123 }
end
end
!
Test.new.test.call # Crashes sometimes

20. mruby
1.0.0

22. How about mruby on
Apple’s 64-bit A7 SoC?

23. app.archs['iPhoneOS'] << 'arm64'
RubyMotion - Rakefile

24. MRuby::CrossBuild.new('ios-arm64') do |conf|
toolchain :gcc
!
conf.cc.flags << "-arch arm64"
conf.linker.flags << "-arch arm64”
# ...
!
end
mruby - build_config.rb

25. #define MRB_INT64

26. #define MRB_USE_FLOAT

27. #define MRB_USE_FLOAT; #define MRB_INT64
0%
1%
2%
3%
4%
5%
6%
bm_so_lists.rb fib39.rb
Benchmark on A7

30. 64-bit RiteVM

31. !WHY MRUBY &
RUBYMOTION?
Focusing
Avoiding limitations

32. DSL

33. mruby + RubyMotion = ?

34. Where to use?

35. Explain things better

37. {
"uuid": "B9407F30-F5F8-466E-AFF9-25556B57FE6D",
"events": [
{
"proximity": "immediate",
"url": "http://host.com/event/1"
},
{
"proximity": "near",
"url": "http://host.com/event/2"
},
{
"proximity": "far",
"url": "http://host.com/event/3"
}
]
}

39. beacon b1 do
uuid "B9407F30-F5F8-466E-AFF9-25556B57FE6D"
major 75682
minor 1
end
!
beacon b2 do
uuid "B9407F30-F5F8-466E-AFF9-25556B57FE6D"
major 75682
minor 2
end
!
beacon b3 do
uuid "B9407F30-F5F8-466E-AFF9-25556B57FE6D"
major 75682
minor 3
end
!
event b1.far, b2.near do
url “https://host.com/event/1"
end
!
event b2.immediate, !b3.far do
url “https://host.com/event/2"
end

40. Game scripting in mruby

41. Lua! Ruby!

42. Babe, Let’s Rock!!

43. Hide your code

44. #include <stdint.h>
const uint8_t nothing_here[] = {
0x52,0x49,0x54,0x45,0x30,0x30,0x30,0x32,0x1f,0xef,0x00,0x00,0x00,0x62,0x4d,0x41,
0x54,0x5a,0x30,0x30,0x30,0x30,0x49,0x52,0x45,0x50,0x00,0x00,0x00,0x44,0x30,0x30,
0x30,0x30,0x00,0x00,0x00,0x38,0x00,0x01,0x00,0x03,0x00,0x00,0x00,0x00,0x00,0x04,
0x00,0x80,0x00,0x06,0x01,0x00,0x00,0x3d,0x00,0x80,0x00,0xa0,0x00,0x00,0x00,0x4a,
0x00,0x00,0x00,0x01,0x00,0x00,0x08,0x74,0x6f,0x6c,0x64,0x20,0x79,0x6f,0x75,0x00,
0x00,0x00,0x01,0x00,0x04,0x70,0x75,0x74,0x73,0x00,0x45,0x4e,0x44,0x00,0x00,0x00,
0x00,0x08,
};
secret.c
$ mrbc -Bnothing_here secret.rb
mrb.read_irep nothing_here
mrb.run

45. Ruby Everywhere!!

46. Any questions?

47. Thank you!