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RubyMotion

@justincampbell

Dividata iOS

bit.ly/dividata-ios-beta

iOS #1

  • iPhone 3G/App Store
  • First Mac
  • Inexperienced
  • Everything was NDA

iOS #2

  • Movitas
  • Only Mac user in office
  • PhoneGap/SIP

iOS #3

  • RubyMotion
  • May 2012
  • Prototype in 4 hours
  • Finished/polished 1 month

RubyMotion

  • Laurent Sansonetti (@lrz)
  • HipByte
  • MacRuby
  • $199

What is RubyMotion?

  • Ruby compiler for iOS
  • Rake workflow
  • 1.9 (ish)
  • Missing require/eval
  • Named-parameters

Named Parameters

[@"Ruby"
  compare:@"ruby"
  options:NSCaseInsensitiveSearch];

Named Parameters

NSString
-compare:options:

Named Parameters

"Ruby".compare("ruby",
  options: NSCaseInsensitiveSearch)

Named Parameters

"Ruby".compare "ruby",
  options: NSCaseInsensitiveSearch

Named Parameters

def application(application,
  didFinishLoadingWithOptions: options)
  # ...
end

Types

String < NSMutableString
Array < NSMutableArray
Hash < NSMutableDictionary
Time < NSDate
...

Selector Shorcuts

alias foo= setFoo:
alias foo? isFoo
alias []   objectForKey:
alias []=  setObject:forKey:

Pointers

pointer = Pointer.new :object

Concurrency

Dispatch::Queue.concurrent.async do
  Dispatch::Queue.main.sync do
    puts "Hi!"
  end
end

Demo

New App

Demo

Dividata + REPL

Demo

TestFlight

Questions?

Thanks!

@justincampbell