Upgrade to Pro
— share decks privately, control downloads, hide ads and more …
Speaker Deck
Features
Speaker Deck
PRO
Sign in
Sign up for free
Search
Search
Start using Swift.
Search
DAloG
January 14, 2016
Programming
1
120
Start using Swift.
DAloG
January 14, 2016
Tweet
Share
More Decks by DAloG
See All by DAloG
State normalization (RU)
dalog
0
190
Redux + MQTT
dalog
1
770
От задач к проблемам
dalog
1
250
Unlimited power of Data-Driven UI
dalog
4
640
Data-Driven View Controllers. Tips and Tricks
dalog
5
1.9k
2 years of Redux in iOS. Lessons learned
dalog
0
370
Why unidirectional architecture matter for iOS.
dalog
1
290
Mobile backend without REST
dalog
2
100
Self managed teams 101
dalog
0
150
Other Decks in Programming
See All in Programming
PHP 8.4の新機能「プロパティフック」から学ぶオブジェクト指向設計とリスコフの置換原則
kentaroutakeda
2
900
iOS 26にアップデートすると実機でのHot Reloadができない?
umigishiaoi
0
130
レベル1の開発生産性向上に取り組む − 日々の作業の効率化・自動化を通じた改善活動
kesoji
0
220
Porting a visionOS App to Android XR
akkeylab
0
470
生成AI時代のコンポーネントライブラリの作り方
touyou
1
220
おやつのお供はお決まりですか?@WWDC25 Recap -Japan-\(region).swift
shingangan
0
140
明示と暗黙 ー PHPとGoの インターフェイスの違いを知る
shimabox
2
510
ruby.wasmで多人数リアルタイム通信ゲームを作ろう
lnit
3
490
システム成長を止めない!本番無停止テーブル移行の全貌
sakawe_ee
1
200
Google Agent Development Kit でLINE Botを作ってみた
ymd65536
2
250
Quand Symfony, ApiPlatform, OpenAI et LangChain s'allient pour exploiter vos PDF : de la théorie à la production…
ahmedbhs123
0
190
今ならAmazon ECSのサービス間通信をどう選ぶか / Selection of ECS Interservice Communication 2025
tkikuc
21
4k
Featured
See All Featured
The Invisible Side of Design
smashingmag
301
51k
The Cult of Friendly URLs
andyhume
79
6.5k
CoffeeScript is Beautiful & I Never Want to Write Plain JavaScript Again
sstephenson
161
15k
Git: the NoSQL Database
bkeepers
PRO
430
65k
The Success of Rails: Ensuring Growth for the Next 100 Years
eileencodes
45
7.5k
VelocityConf: Rendering Performance Case Studies
addyosmani
332
24k
Bash Introduction
62gerente
613
210k
Side Projects
sachag
455
42k
Building Adaptive Systems
keathley
43
2.7k
[RailsConf 2023 Opening Keynote] The Magic of Rails
eileencodes
29
9.6k
How GitHub (no longer) Works
holman
314
140k
Bootstrapping a Software Product
garrettdimon
PRO
307
110k
Transcript
20.01.2016 Forget Objective-C. Start Swift. for Kharkiv Mobile Devs #15
Alexey Demedetskiy ✤ twitter: @DAlooG ✤ email:
[email protected]
✤ skype:
nobidon
Objective-C ✤ KVO/KVC ✤ UIKit ✤ Monolithic namespace ✤ Partially
defined behavior ✤ CoreData
Swift ✤ Closures ✤ Immutability ✤ Value types ✤ Generics
✤ Optionals
Swift ✤ Protocols ✤ Nested types ✤ Static ✤ Default
values ✤ Operators
How to Swift? ✤ Add Swift to existing project ✤
Start new project
Why? ✤ Strong types —> Less errors ✤ More instruments
—> Cleaner code ✤ Better syntax —> Easy to read and write
Optionals vs ‘nil’
nil ✤ [nil aMessage:@«text»] - ✅ ✤ [list addObject:nil] -
❌
Optional<T> ✤ T! ✤ T? ✤ T
Dirty Types ✤ UIKit ✤ External data (Network etc) ✤
Objective-C
How to clear types? ✤ as? : Any -> T?
✤ as! : Any -> T
None
None
None
WTF Immutability. ✤ Reference and Value types ✤ let -
immutable name ✤ var - mutable name
Struct trickery ✤ How many objects will be created? ✤
How many times `print` will write? ✤ What `t1.b` will print?
Struct trickery ✤ 0. There is no objects. ✤ 1.
✤ 4.
Class trickery ✤ How many objects will be created? ✤
How many times `print` will write? ✤ What `t1.b` will print?
Class trickery ✤ 1 ✤ 1 ✤ -1
let == const?
let == const?
Value types Pros ✤ Immutable. Even with `var` ✤ `init`
from compiler ✤ No inheritance
Properties ✤ no setter / getter methods. ✤ …unless `dynamic`
is specified ✤ `willSet` / `didSet` with references to new/old values ✤ `public private(set) var …` is ok
enum vs NS_ENUM
enum vs NS_ENUM
Shadow types!
None
None
When use enum? ✤ Flags ✤ States ✤ Options ✤
Shadow type
Alamofire vs AFNetworking
Namespaces ✤ Nested types ✤ Frameworks ✤ Targets
Nested types
Nested types
Nested types
Nested types
Nested types
let = vs dispatch_once
Outro ✤ Run away from Obj-C ✤ Build your own
logic modules ✤ Use Value Types ✤ Don’t use generics + inheritance + UIKit