let swift(16)

Do�Swift:Swift�무작정�해보기

김윤봉

I’m

김윤봉�@y8k�

OSXDev.org�2016�Swift�Study�Staff�

iOS�Developer�@�Viva�Republica�

iOSTip�FB�page��

LET�me�lOg

let swift(16)

INTRO

Swift�Project�시작

Swift�Release�History

Swift�1.0

2010

2014

2015 Swift�2.0

Swift�3.02016

WWDC�2014

WWDC�2015�/�Open�Sourced

by�Chris�Lattner

WWDC�2016

I�felt

&�I�decided

“그래도�Objective-C가�짱이지!!”

What?!

To quote Apple, “Objective-C is not going away, both Swift and Objective-C are first class citizens for doing Cocoa and Cocoa Touch development.”

So you can still use Objective-C. However, Apple seems to be encouraging you to use Swift for any new development, while not expecting you to go back and re-write all of your Objective-C code.

Although this is pure speculation, we are guessing Apple will also be moving away from Objective-C for future Framework and API development, and some day Objective-C may even be deprecated. So, hop aboard with the rest of the raywenderlich.com Team on the Swift train :]

Is Swift meant to replace Objective-C, or supplement it?

* https://www.raywenderlich.com/74138/swift-language-faq

TIOBE�Index

* http://www.tiobe.com/tiobe_index?page=index

TIOBE�Index�-�Swift

TIOBE�Index�-�Objective-C

StackOverflow�Report

* http://stackoverflow.com/research/developer-survey-2016#technology-most-loved-dreaded-and-wanted

So..

let swift(16)

I�Did�…

5DUCKS

Swift�1.2�

2015년�중반�

SK�Planet�(SK�Telecom)�

iOS�개발자�2명

바로예약

Swift�2.2�

2016년�초중반�

야놀자�

iOS�개발자�3명

let swift(16)

EPISODE

Do�We�Swift?!

Swift Okay?!

Swift는�1.2부터�안정화�되었다…�하지만…

Just�Do�It!

let swift(16)

Anyway,�Let’s�Swift

Bottlenecks

손가락이�기억하고�있는�“[“,�“]”,�“;”,�“NS”,�“@“�

에라�모르겠다�모든�변수는�var로�통일한다!

Optional and Binding

Collection Types

Property

Optional

var name: String! = “초기값�필수”

var email: String?

Binding

var nickName: String? nickName = “y8k”

if let name = nickName { self.nameLabel.text = name} else { self.nameLabel.text = “NoName” }

guard let name = nickName else { self.nameLabel.text = “NoName” return} self.nameLabel.text = name

Collection�Types

let alphabets: Array<String> = [“A”, “B”, “C”]

let roomAndNames: Dictionary<String, String>

= [“101” : “Kim”, “102” : “Lee”]

let alphabets: [String] = [“A”, “B”, “C”]

let roomAndNames: [String : String]

= [“101” : “Kim”, “102” : “Lee”]

let selectedNums: Set<Int> = [1, 2, 3]

Property

var name: String {

get {

}

set {

}

}

class fullName: Name {

override var firstName: String {

}

}

Property

class fullName: Name {

var number: Int = 0 {

willSet(value) { }

didSet {

}

}

}

Next

Generics�

Closure�

Extension�

Protocol-Oriented�Programming

Protocol-Oriented�Programming

protocol Drivable {

var topSpeed: Int { get } }

protocol Transport { var seatCount: Int { get } }

struct Car: Drivable, Transport { var topSpeed = 150 var seatCount = 5 }

Cons.

Framework�API�사용은�거의�유사하다.�

Objective-C�능숙자는�여기까지만�알아도�큰�어려움�없이�Swift로�넘어올�수�있다.�하면서�배우게�되더라…�

Swift의�빠른�버전업으로�유지/보수�비용이�증가하나�코드의�간결성과�확장�용이로�인해�증가된�유지/보수�비용이�보상이�되기도�한다.�

Swift를�이용한�Open�Source�프로젝트�전�분야에�걸쳐�많은�시도가�일어나고�있다.�

Objective-C�코드와�Swift�코드는�한�프로젝트�내에서�혼합하여�사용가능하다.�단,�한�파일�내에�두�언어의�코드�혼합은�안됨.

OSXDev.org�Swift�Study

매달�1회�오프라인�스터디�진행�

Open�Study�

The�Swift�Programming�Language�by�Apple�inc.

3.0….�What�the…

let swift(16)