Swift: The Basics

Brooklyn Swift Developers Meetup June 17, 2014

Swift: The Basics

WWDC 2014

Brooklyn Swift Developers Meetup

“And One More Thing…”

Early Reactions

“HOLY FUCK”- me

Early Reactions

“FUCK YEAH”- me 5 min later

Early Reactions

Convenience of a Modern Scripting language with the Performance of Objective-C

Swift vs. Objective-C

Namespaces• Class names scoped to module

(ie. framework)• No more class prefixes

Type Safety• Compiler performs type checks

to find mismatched types• Allows for type inference

var heyStr = “Hey”

Closures• Nameless function constructed

as another function's argument• Equivalent to Blocks

numbers.map({ (number: Int) -> Int in let result = 3 * number return result})

Tuples• Group multiple values to single value• Supports multiple typeslet someTuple = (10, true, “Hello”)// type (Int, Bool, String)let anotherTuple = (arg1: 100, arg2: “Hi”)// anotherTuple.arg1, anotherTuple.arg2

Playground

• Interactive coding environment for testing• Immediate feedback

Questions?

Resources

• The Swift Programming Languagehttps://itunes.apple.com/us/book/swift-programming-language/id881256329?mt=11

• WWDC 2014 Videoshttps://developer.apple.com/videos/wwdc/2014

• Ray Wenderlich Tutorialshttp://www.raywenderlich.com/tutorials

• Swift Video Tutorialshttp://swiftvideotutorials.com

Github: https://github.com/marcdownTwitter: @creativemessdev!

Source: https://github.com/marcdown/SwiftPlayground

Thanks!

Swift: The Basics

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