RubyMotion - Geneva.rb

Presentation of RubyMotion to some fellow rubyists.
Keynote download : http://cl.ly/N3XE

Transcript

1. by @FredericJacobs RubyMotion
2. Getting the bias out of the way
3. iOS Developer
4. from an Objective-C Developer Perspective RubyMotion
5. Requirements
6. Requirements
7. Requirements
8. Requirements
9. Requirements
10. What is RubyMotion not ?
11. What is RubyMotion ?
12. iOS SDK Foundation Framework Objective-C Runtime Objective-C
13. iOS SDK Foundation Framework Objective-C Runtime RubyMotion Objective-C
14. FAST
15. Wait, how can that possibly work ?
16. The Man @lrz Laurent Sansonetti
17. The Man @lrz MacRuby 7 years of experience at Apple Mac OS X IDA Pro GNOME Laurent Sansonetti RubyCocoa RubyMotion iLife
18. Smalltalk
19. Smalltalk Objective-C Ruby(Motion)
20. Mixins Objective-C • No mixins available in ObjC language • Runtime Implementation : class_addMethod(Class cls, SEL name, IMP imp, const char *types); Ruby(Motion) module CapitalNames def capitalized_name name.upcase end end class User include CapitalNames def initialize name @name = name end def name @name end end
21. Open-Classes Objective-C • Objective-C is using “Categories” •Implementation : @implementation NSNumber (TimeDiff) - (NSNumber *)days { return [NSNumber numberWithInteger:([self intValue] * 24 * 60 * 60)]; } - (NSDate *)ago { return [NSDate dateWithTimeIntervalSinceNow:[self intValue]]; } @end Ruby(Motion) class Fixnum def days self * 24 * 60 * 60 end def ago Time.now - self end end
22. So why RubyMotion ?
23. And Ruby loves iOS You Love Ruby Well, now Ruby loves iOS
24. Ruby way of doing things Objective-C NSFileManager *mgr = [NSFileManager defaultManager]; NSArray *paths =[mgr contentsOfDirectoryAtPath:@"/etc" error:nil]; [paths enumerateObjectsUsingBlock:^(id obj, ...) { NSLog(@"%@", obj); }]; Ruby(Motion) Dir["/etc"].each do |name| puts name end
25. Keep your tools
26. Command Line Debugging
27. Documentation
28. But how to deal with Objective-C weirdness ? Objective-C [string drawAtPoint:point withFont:font]; Ruby(Motion) string.drawAtPoint(point, withFont:font)
29. Demo Time
30. You’re not alone Wrappers Especially BubbleWrap
31. @FredericJacobs Email : frederic.jacobs@mac.com GitHub : github.com/FredericJacobs Slides : speakerdeck.com/FredericJacobs