The document summarizes the key points from a Brooklyn Swift Developers Meetup. It discusses the presenter's early excited reactions to Swift being announced at WWDC 2014. The meetup then covered an introduction to Swift, comparing it to Objective-C by highlighting features like namespaces, type safety, closures and tuples in Swift. It demonstrated Swift in a Playground and answered audience questions. Resources for learning more about Swift were provided at the end.

1. Brooklyn Swift Developers Meetup
June 17, 2014
Swift: The Basics

2. WWDC 2014
Brooklyn Swift Developers Meetup

3. “And One More Thing…”
Brooklyn Swift Developers Meetup

4. Early Reactions
Brooklyn Swift Developers Meetup

5. Early Reactions
Brooklyn Swift Developers Meetup

6. Early Reactions
Brooklyn Swift Developers Meetup

7. Early Reactions
Brooklyn Swift Developers Meetup
“HOLY FUCK”
- me

8. Early Reactions
Brooklyn Swift Developers Meetup
“FUCK YEAH”
- me 5 min later

9. Early Reactions
Brooklyn Swift Developers Meetup

10. Early Reactions
Brooklyn Swift Developers Meetup

11. Early Reactions
Brooklyn Swift Developers Meetup

12. Early Reactions
Brooklyn Swift Developers Meetup

13. Early Reactions
Brooklyn Swift Developers Meetup

14. Swift
Brooklyn Swift Developers Meetup

15. Swift
Brooklyn Swift Developers Meetup
Convenience of a Modern
Scripting language with the
Performance of Objective-C

16. Swift vs. Objective-C
Brooklyn Swift Developers Meetup

17. Swift vs. Objective-C
Brooklyn Swift Developers Meetup
Namespaces
• Class names scoped to module
(ie. framework)
• No more class prefixes

18. Swift vs. Objective-C
Brooklyn Swift Developers Meetup
Type Safety
• Compiler performs type checks
to find mismatched types
• Allows for type inference
var heyStr = “Hey”

19. Swift vs. Objective-C
Brooklyn Swift Developers Meetup
Closures
• Nameless function constructed
as another function's argument
• Equivalent to Blocks
numbers.map({
(number: Int) -> Int in
let result = 3 * number
return result
})

20. Swift vs. Objective-C
Brooklyn Swift Developers Meetup
Tuples
• Group multiple values to single value
• Supports multiple types
let someTuple = (10, true, “Hello”)
// type (Int, Bool, String)
let anotherTuple = (arg1: 100,
arg2: “Hi”)
// anotherTuple.arg1, anotherTuple.arg2

21. Playground
Brooklyn Swift Developers Meetup

22. Playground
Brooklyn Swift Developers Meetup
• Interactive coding environment for testing
• Immediate feedback

23. Brooklyn Swift Developers Meetup

24. DEMO
Brooklyn Swift Developers Meetup

25. Questions?
Brooklyn Swift Developers Meetup

26. Resources
Brooklyn Swift Developers Meetup
• The Swift Programming Language
https://itunes.apple.com/us/book/swift-programming-language/
id881256329?mt=11
• WWDC 2014 Videos
https://developer.apple.com/videos/wwdc/2014
• Ray Wenderlich Tutorials
http://www.raywenderlich.com/tutorials
• Swift Video Tutorials
http://swiftvideotutorials.com

27. Github: https://github.com/marcdown
Twitter: @creativemessdev
!
Source: https://github.com/marcdown/SwiftPlayground
Brooklyn Swift Developers Meetup
Thanks!