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

Fun with Swift 4 KeyPaths

Sponsored · SiteGround - Reliable hosting with speed, security, and support you can count on. →
Avatar for John Estropia John Estropia
September 17, 2017
Technology
1
650

Fun with Swift 4 KeyPaths

My Lightning Talk at iOSDC 2017 Japan

Avatar for John Estropia

John Estropia

September 17, 2017
Tweet

More Decks by John Estropia

See All by John Estropia
WWDC Party Intro to CoreStore
Avatar for John Estropia johnestropia
0
64
Making an Efficient Deploy Bot
Avatar for John Estropia johnestropia
0
450
Creating Keyboard Extensions
Avatar for John Estropia johnestropia
0
81
Making Sense of Neural Network Training
Avatar for John Estropia johnestropia
0
84
My journey taming Core Data: An intro to the CoreStore library
Avatar for John Estropia johnestropia
0
170
Pairs JP Team's iOS Deployment
Avatar for John Estropia johnestropia
0
950
Making Slackbots deploy iOS apps for you
Avatar for John Estropia johnestropia
2
230
OSSの作法（本題）
Avatar for John Estropia johnestropia
0
80

Other Decks in Technology

See All in Technology
Cosmos World Foundation Model Platform for Physical AI
Avatar for Takuya MINAGAWA takmin
0
930
SRE Enabling戦記 - 急成長する組織にSREを浸透させる戦いの歴史
Avatar for Masaki Ishigaki markie1009
0
130
SREじゃなかった僕らがenablingを通じて「SRE実践者」になるまでのリアル / SRE Kaigi 2026
Avatar for AEON aeonpeople
6
2.5k
【Ubie】AIを活用した広告アセット「爆速」生成事例 | AI_Ops_Community_Vol.2
Avatar for Yoshiki yoshiki_0316
1
100
FinTech SREのAWSサービス活用/Leveraging AWS Services in FinTech SRE
Avatar for maaaato maaaato
0
130
コスト削減から「セキュリティと利便性」を担うプラットフォームへ
Avatar for SansanTech sansantech
PRO
3
1.5k
データの整合性を保ちたいだけなんだ
Avatar for ShoheiMitani shoheimitani
8
3.1k
セキュリティについて学ぶ会 / 2026 01 25 Takamatsu WordPress Meetup
Avatar for Rocket Martue rocketmartue
1
310
30万人の同時アクセスに耐えたい！新サービスの盤石なリリースを支える負荷試験 / SRE Kaigi 2026
Avatar for GENDA genda
4
1.3k
OCI Database Management サービス詳細
Avatar for oracle4engineer oracle4engineer
PRO
1
7.4k
Bedrock PolicyでAmazon Bedrock Guardrails利用を強制してみた
Avatar for Yudai Jinno yuu551
0
240
配列に見る bash と zsh の違い
Avatar for kazzpapa3 kazzpapa3
3
160

Featured

See All Featured
From π to Pie charts
Avatar for Rasagy Sharma rasagy
0
120
Breaking role norms: Why Content Design is so much more than writing copy - Taylor Woolridge
Avatar for UX Y'all uxyall
0
170
Impact Scores and Hybrid Strategies: The future of link building
Avatar for Tamara Novitovic tamaranovitovic
0
200
16th Malabo Montpellier Forum Presentation
Avatar for AKADEMIYA2063 akademiya2063
PRO
0
51
Fashionably flexible responsive web design (full day workshop)
Avatar for Andy Clarke malarkey
408
66k
Building Applications with DynamoDB
Avatar for Matt Wood mza
96
6.9k
svc-hook: hooking system calls on ARM64 by binary rewriting
Avatar for Akira Moroo retrage
1
100
Producing Creativity
Avatar for Steve Smith orderedlist
PRO
348
40k
Templates, Plugins, & Blocks: Oh My! Creating the theme that thinks of everything
Avatar for Michelle Schulp Hunt marktimemedia
31
2.7k
The Web Performance Landscape in 2024 [PerfNow 2024]
Avatar for Tammy Everts tammyeverts
12
1k
Navigating the Design Leadership Dip - Product Design Week Design Leaders+ Conference 2024
Avatar for Andy Polaine apolaine
0
180
Odyssey Design
Avatar for Ryan Kendrick rkendrick25
PRO
1
500

Transcript

  1. Fun with Swift 4 KeyPaths iOSDC 2017 John Estropia

  2. • @JohnEstropia • Senior Engineer @ • iOS։ൃ • OSS

    ࣗݾ঺հ http://github.com/JohnEstropia/CoreStore

  3. Swift 4 Smart Keypaths

  4. KVC: Before vs. After Swift 3 Swift 4

  5. KVC: Before vs. After Swift 3 Swift 4

  6. KVO: After Swift 4

  7. Fun with Swift 4 KeyPaths

  8. Predicates (Before)

  9. ͜ͷॻ͖ํ͕Ͱ͖Δͱ࠷ߴͰ͠ΐ͏ʁ

  10. ͜ͷॻ͖ํ͕Ͱ͖Δͱ࠷ߴͰ͠ΐ͏ʁ

  11. KeyPath × Generics × Custom Operator

  12. Custom Operator

  13. KeyPath Generics

  14. KeyPath Generics ͕͜͜Smartʂ

  15. KeyPath→String

  16. ൿີຐ๏property KeyPath→String

  17. Nice Predicates

  18. Sample: CoreStore ( prototype/queryBuilders branch )

  19. Sample: CoreStore ( prototype/queryBuilders branch )

  20. Ҏ্ɺThanks!

  21. େืूதʂ