Upgrade to Pro — share decks privately, control downloads, hide ads and more …

Optional 遇到的問題 - 公司內分享會

Avatar for Li-Hsuan Chen Li-Hsuan Chen
August 18, 2016
Programming
0
150

Optional 遇到的問題 - 公司內分享會

這週主題是專案上使用 Swift 的 optional 時所碰到的問題。
包含了使用 [unowned self] 以及 @IBOutlet 時碰到的問題與解決的方式。
Avatar for Li-Hsuan Chen

Li-Hsuan Chen

August 18, 2016
Tweet

More Decks by Li-Hsuan Chen

See All by Li-Hsuan Chen
The UX thinking of PAY ID
Avatar for Li-Hsuan Chen vc7
2
450
From Onboarding to Value Delivering in iOS
Avatar for Li-Hsuan Chen vc7
0
270
Merciless Refactoring
Avatar for Li-Hsuan Chen vc7
0
760
Protocol 的實例、測試和心得
Avatar for Li-Hsuan Chen vc7
2
800
共有経済
Avatar for Li-Hsuan Chen vc7
0
170
.gitignore
Avatar for Li-Hsuan Chen vc7
1
95
Git Workshop 03
Avatar for Li-Hsuan Chen vc7
0
120
Git Workshop 02
Avatar for Li-Hsuan Chen vc7
0
110
Escaping Closures in Swift - 公司內分享會
Avatar for Li-Hsuan Chen vc7
1
240

Other Decks in Programming

See All in Programming
Hack Claude Code with Claude Code
Avatar for Akihiro Okuno choplin
5
2.4k
Railsアプリケーションと パフォーマンスチューニング ー 秒間5万リクエストの モバイルオーダーシステムを支える事例 ー Rubyセミナー 大阪
Avatar for Hayato OKUMOTO falcon8823
5
1.4k
Rails Frontend Evolution: It Was a Setup All Along
Avatar for Svyatoslav Kryukov skryukov
0
230
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
Avatar for 武田 憲太郎 kentaroutakeda
2
990
Modern Angular with Signals and Signal Store: New Rules for Your Architecture @enterJS Advanced Angular Day 2025
Avatar for Manfred Steyer manfredsteyer
PRO
0
240
RailsGirls IZUMO スポンサーLT
Avatar for 16bit_idol 16bitidol
0
190
Deep Dive into ~/.claude/projects
Avatar for Yuya Hirayama hiragram
14
8.4k
The Evolution of Enterprise Java with Jakarta EE 11 and Beyond
Avatar for ivargrimstad ivargrimstad
0
150
テスト駆動Kaggle
Avatar for ねぼすけAI isax1015
1
490
Agentic Coding: The Future of Software Development with Agents
Avatar for Armin Ronacher mitsuhiko
0
120
The Niche of CDK Grant オブジェクトって何者？/the-niche-of-cdk-what-isgrant-object
Avatar for hassaku63 hassaku63
1
430
What's new in AppKit on macOS 26
Avatar for 1024jp 1024jp
0
130

Featured

See All Featured
"I'm Feeling Lucky" - Building Great Search Experiences for Today's Users (#IAC19)
Avatar for Dan Newman danielanewman
229
22k
Build The Right Thing And Hit Your Dates
Avatar for Maggie C. maggiecrowley
36
2.8k
Adopting Sorbet at Scale
Avatar for Ufuk Kayserilioglu ufuk
77
9.5k
The Power of CSS Pseudo Elements
Avatar for Geoffrey Crofte geoffreycrofte
77
5.9k
[Rails World 2023 - Day 1 Closing Keynote] - The Magic of Rails
Avatar for Eileen M. Uchitelle eileencodes
35
2.4k
Reflections from 52 weeks, 52 projects
Avatar for Jefferson Lam jeffersonlam
351
21k
Music & Morning Musume
Avatar for Bryan Veloso bryan
46
6.7k
Building Applications with DynamoDB
Avatar for Matt Wood mza
95
6.5k
Why You Should Never Use an ORM
Avatar for John Nunemaker jnunemaker
PRO
58
9.4k
The MySQL Ecosystem @ GitHub 2015
Avatar for Sam Lambert samlambert
251
13k
Fireside Chat
Avatar for paigeccino paigeccino
37
3.5k
Fantastic passwords and where to find them - at NoRuKo
Avatar for Phil Nash philnash
51
3.3k

Transcript

  1. 遇到的問題 Optional 陳 澧萱 @ 午餐分享會 2016/08/18

  2. 目錄 • [unowned self] • @IBOutlet త !

  3. [unowned self]

  4. Crash TFMGඃᬶ์ޙ ࡏDMPTVSFཫݺڣTFMG଄੒DSBTI ʢᙛ൛ຊҎ্ʣ

  5. 解決方法 Ŏ አ[weak self] Ŏ 矑茐አguard letᴠ纠

  6. @IBOutlet 的 !

  7. @IBOutlet Ŏ 䨝ڊԪጱ碻秚牫 Ŏ viewDidLoad()౲ฎloadView()ԏ獮 Ŏ ౮㹓虋碍ಅࣁጱᇔկᤩ朰硯ധԧ @IBOutlet var messageLabel:

    UILabel!

  8. 結語 Ŏ ဳ఺LPSOLFLWO\XQZUDSSHGRSWLRQDO Ŏ 胼犋ᥝአ牧疰犋ᥝአ Ŏ ဳ఺ᇔկጱOLIHF\FOH牧犋ᥝॡፘמਥොጱ