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Sure, I could learn
Objective-C but...
Isn’t there something better?
Joshua Ballanco
@manhattanmetric
https://github.com/jballanc
Joshua Ballanco
@manhattanmetric
https://github.com/jballanc
What is Objective-C?
• Object Oriented
• Message Passing
• SmallTalk Inspired
• Strict Superset of C
Objective-C Explosion

Why?
Duh...
Is there another option?
What is Ruby?
• Object Oriented
• Message Passing
• SmallTalk Inspired
• Strict Superset of C
RubyMotion is Ruby
for iOS and OS X
Learning a New Language
Stage 1
I understand what you’re saying...
but I have no idea how to reply
Learning a New Language
Stage 2
I know how to construct statements,
but they are direct translations
from that other language I know
Learning a New Language
Stage 3
I get it!
How to learn RubyMotion?
• If you don’t know Objective-C...
• GREAT! Go for it!
How to learn RubyMotion?
• Directly Translate
• Apply Ruby Refactorings
• Re-Open Core Types (Monkey-Patching)
• Build Modules
• Use Wrappers
JTGestureBasedTableView
https://github.com/jamztang/JTGestureBasedTableViewDemo
GestureTable Sample
https://github.com/HipByte/RubyMotionSamples/tree/master/ios/GestureTable
Direct Translation
Obj-C

RubyMotion
Direct Translation
Direct Translation
Direct Translation
Obj-C
RubyMotion
Direct Translation
Obj-C
RubyMotion
Direct Translation
Obj-C

RubyMotion
Direct Translation
Obj-C

RubyMotion
Ruby Refactoring
Ruby Refactoring
Re-Open Core Classes
Modules
Modules
Wrappers
http://motionwrappers.com/
Wrappers
http://motionwrappers.com/
Wrappers
http://motionwrappers.com/
Wrappers
http://motionwrappers.com/
Wrappers
http://motionwrappers.com/
Why should I use
Objective-C
• Speed
• Interface directly with C libraries
• Like long method names
Why should I use
RubyMotion
• Development speed
• Clear, concise business logic
• Use high-level wrapper libraries
Moral of the Story...
Use the best tool for the job...
and there is more than one tool!

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Sure, I Could Learn Objective-C, but...