Let's talk swift - an introduction

Let’s Talk SWIFT 30 min / 30 slides

Hej! Mig?

�  linkedin.com/jacobhhansen

�  IT-Minds siden 2011

�  iOS siden 2012

1.

Definition

“builds on the best of C and Objective-C”

“Swift has been years in the making.”

“a new language for the future of Apple software development.”

2.

Definition

“builds on the best of C and Objective-C”

“Swift has been years in the making.”

“a new language for the future of Apple software development.”

2.

Ny syntax! 3.

Deklarer en variable �  Variabler og konstanter

Var myInt : Int = 2

Let myString : String = “Hej”

�  Strongly Typed

�  Type Inference

�  Og....Emojies

4.

Funktioner 5.

NSLog(@”Hej”);

Println(“Hej”)

NSLog(@”Hej %@”, navn);

Println(“Hej \(navn)”)

6. Print Variabler

Standard Types �  String

�  Character

�  Int (32 / 64 bits)

�  Double / Float

�  Bool

�  Array

�  Dictionary

7.

Array / Dictionary �  Has a type!

�  Short Hand

�  Shortest Hand

�  Mutable / Immutable

8.

Objective-C kompabilitet �  Bridge Header filer

�  Generated Header (#import “appname-swift.h”

9.

Platform

�  iOS7 + 8

�  OS X Yosemite + Mavericks

10.

PlayGrounds

11.

PlayGrounds

11.

PlayGrounds 11.

PlayGrounds

11.

PlayGrounds

11.

Enum

12.

Switch �  Must be exhaustive

�  Don’t falll through on its own

�  Pattern Matching

13.

Associated/Raw Values

14.

Optionals �  Alt kan være nil

15.

Optional binding

16.

Optional Chaining 17.

Protocols �  No optionals

�  Er typer (Delegation)

�  Blueprint

Metoder

Operatorer

Subscripts

Properties

18.

Protocols 18.

REPL �  Read-Eval-Print-Loop

�  Kør Scripts!

19.

Closures �  Fungerer som blocks / lambdas

�  Global / Nested / Expressions

20.

Tuple �  Midlertidig datastruktur

21.

Ranges �  Shortcut!

22.

Ranges �  Shortcut!

22.

Operators �  Overload Operators (class / struct level)

�  Custom operators

Infix / Prefix / Postfix

/, =, -, +, !, *, %, <, >, &, |, ^, or ~

23.

Struct / Class

�  Class er reference (heap)

�  Struct er værdi (stack) + ingen nedarvning

24.

No Header! �  Show what it is

25.

Init / Deinit �  Alt skal initialiseres!

26.

Init / Deinit �  Alt skal initialiseres!

26.

Init / Deinit �  Alt skal initialiseres!

26.

Init more

27.

Generics

28.

Generics

+Type Constraints

28.

Og meget mere…

�  Private / Public

�  Property Observers

�  Subscripts

�  Extensions

29.

Lær Mere! �  https://developer.apple.com/swift/

�  The Swift Programming Language

�  Using Swift with Cocoa and Objective-C

�  WWDC14

30.