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

Fun with Swift 4 KeyPaths

Avatar for John Estropia John Estropia
September 17, 2017
Technology
660
1

Fun with Swift 4 KeyPaths

My Lightning Talk at iOSDC 2017 Japan

Avatar for John Estropia

John Estropia

September 17, 2017

More Decks by John Estropia

See All by John Estropia
WWDC Party Intro to CoreStore
Avatar for John Estropia johnestropia
0
70
Making an Efficient Deploy Bot
Avatar for John Estropia johnestropia
0
460
Creating Keyboard Extensions
Avatar for John Estropia johnestropia
0
87
Making Sense of Neural Network Training
Avatar for John Estropia johnestropia
0
100
My journey taming Core Data: An intro to the CoreStore library
Avatar for John Estropia johnestropia
0
180
Pairs JP Team's iOS Deployment
Avatar for John Estropia johnestropia
0
970
Making Slackbots deploy iOS apps for you
Avatar for John Estropia johnestropia
2
250
OSSの作法（本題）
Avatar for John Estropia johnestropia
0
85

Other Decks in Technology

See All in Technology
[RSJ26] AnoleVLA: Lightweight Vision-Language-Action Model with Deep State Space Models for Mobile Manipulation
Avatar for Semantic Machine Intelligence Lab., Keio Univ. keio_smilab
PRO
0
120
PfEingのアプローチで働こう
Avatar for rin（林晃 / Akira Hayashi） rindrics
0
130
[RSJ26] Flow as Flow: Modeling Robot Velocity Fields as Probability Velocity Fields
Avatar for Semantic Machine Intelligence Lab., Keio Univ. keio_smilab
PRO
0
190
本番に近いテストをもっと手軽に - Postmanで広がるAPIテストの世界 / Expanding the World of API Testing with Postman
Avatar for Yoichi Kawasaki yokawasa
1
240
リージョンの壁を越える、 ちょっと変わったAWSサービスの話
Avatar for Michael Tedder falken
PRO
0
160
Bet AI Day 2026丨AIを「使う」から、AIが「働く」へ ― LayerXが進める「組織AI」の社会実装
Avatar for LayerX layerx
PRO
2
1.8k
【試作】IoT x AIエージェント
Avatar for コロッケそば happysamurai294
0
110
作り直せるコードは迅速に 作り直せないDBは慎重に - AI時代のプロダクトエンジニアが「判断の不可逆性」で開発速度を変える話
Avatar for kinosuke01 kinosuke01
0
140
Guerilla InnerSource in enterprises, during the AI hype
Avatar for Oleg Nenashev onenashev
PRO
0
140
Bet AI Day 2026丨AIによって本質に戻るシステムリスク管理
Avatar for LayerX layerx
PRO
0
700
Instana&Bob トラブルシュートハンズオン
Avatar for 山崎政憲 mayamasaki68
0
110
Backstageでつくるセルフサービスな社内開発基盤
Avatar for Sakazaki Kikunosuke kikunosuke75
1
220

Featured

See All Featured
Unsuck your backbone
Avatar for Amy Palamountain ammeep
672
58k
Why Your Marketing Sucks and What You Can Do About It - Sophie Logan
Avatar for Sophie Logan marketingsoph
0
400
How Software Deployment tools have changed in the past 20 years
Avatar for Geshan Manandhar geshan
1
34k
SEO Brein meetup: CTRL+C is not how to scale international SEO
Avatar for Linda Hogenes lindahogenes
1
2.9k
Lightning talk: Run Django tests with GitHub Actions
Avatar for Sarah Abderemane sabderemane
0
250
Primal Persuasion: How to Engage the Brain for Learning That Lasts
Avatar for Mike Taylor tmiket
0
440
The Myth of the Modular Monolith - Day 2 Keynote - Rails World 2024
Avatar for Eileen M. Uchitelle eileencodes
28
3.6k
Code Review Best Practice
Avatar for Trisha Gee trishagee
74
20k
Documentation Writing (for coders)
Avatar for Carmen Chung carmenintech
77
5.5k
Fantastic passwords and where to find them - at NoRuKo
Avatar for Phil Nash philnash
52
3.8k
How to Build an AI Search Optimization Roadmap - Criteria and Steps to Take #SEOIRL
Avatar for Aleyda Solis aleyda
1
2.2k
Ruling the World: When Life Gets Gamed
Avatar for Sebastian Deterding codingconduct
0
320

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