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
Kotlin Dynamic type
Search
coe
September 26, 2023
Technology
0
320
Kotlin Dynamic type
集まれSwift好き!Swift愛好会 vol.77 @ DeNA
2023/09/26
coe
September 26, 2023
Tweet
Share
More Decks by coe
See All by coe
すべてのヘルスケアデータを紐解く.pdf
coe
0
2.4k
About HealthKit nutrition
coe
0
380
iOSDC 2023 Web in tvOS and watchOS
coe
1
590
iOSDC 2023 Push To Talk
coe
1
1.8k
iOSDC手で触れずにアプリを動かす技術
coe
1
1.6k
iOSDC令和時代のXML処理を考える
coe
3
2.3k
iOSDC 2021 Restore
coe
6
1.9k
詳解Storyboard
coe
7
3.5k
あなたの知らない連絡先の世界
coe
15
8.1k
Other Decks in Technology
See All in Technology
Snowflake ML モデルを dbt データパイプラインに組み込む
estie
0
110
Autonomous Database Serverless 技術詳細 / adb-s_technical_detail_jp
oracle4engineer
PRO
17
45k
プルリクエストレビューを終わらせるためのチーム体制 / The Team for Completing Pull Request Reviews
nekonenene
1
240
エンジニアリング価値を黒字化する バリューベース戦略を用いた 技術戦略策定の道のり
kzkmaeda
7
3.2k
生成AI×財務経理:PoCで挑むSlack AI Bot開発と現場巻き込みのリアル
pohdccoe
1
780
EMConf JP 2025 懇親会LT / EMConf JP 2025 social gathering
sugamasao
2
200
Change Managerを活用して本番環境へのセキュアなGUIアクセスを統制する / Control Secure GUI Access to the Production Environment with Change Manager
yuj1osm
0
110
技術スタックだけじゃない、業務ドメイン知識のオンボーディングも同じくらいの量が必要な話
niftycorp
PRO
0
120
DeepSeekとは?何がいいの? - Databricksと学ぶDeepSeek! 〜これからのLLMに備えよ!〜
taka_aki
1
170
AIエージェント時代のエンジニアになろう #jawsug #jawsdays2025 / 20250301 Agentic AI Engineering
yoshidashingo
8
4k
役員・マネージャー・著者・エンジニアそれぞれの立場から見たAWS認定資格
nrinetcom
PRO
4
6.5k
AIエージェント元年@日本生成AIユーザ会
shukob
1
250
Featured
See All Featured
Fontdeck: Realign not Redesign
paulrobertlloyd
83
5.4k
The Language of Interfaces
destraynor
156
24k
Statistics for Hackers
jakevdp
797
220k
CoffeeScript is Beautiful & I Never Want to Write Plain JavaScript Again
sstephenson
160
15k
Rails Girls Zürich Keynote
gr2m
94
13k
How to train your dragon (web standard)
notwaldorf
91
5.9k
[RailsConf 2023] Rails as a piece of cake
palkan
53
5.3k
What's in a price? How to price your products and services
michaelherold
244
12k
Being A Developer After 40
akosma
89
590k
Building a Scalable Design System with Sketch
lauravandoore
461
33k
CSS Pre-Processors: Stylus, Less & Sass
bermonpainter
356
29k
The Art of Delivering Value - GDevCon NA Keynote
reverentgeek
11
1.3k
Transcript
ڧ݄ %ZOBNJDUZQF ू·Ε4XJGU͖ʂ4XJGUѪձWPM ू·Ε,PUMJO͖ʂ,PUMJOѪձWPM!%F/"
w ڧ w J04ΤϯδχΞ
%ZOBNJDUZQF
w ڧ w J04Τ ϯδχ Ξ
%ZOBNJD UZQF
fun dynamicFun(x: dynamic): Unit { val dyn: dynamic = ...
} ,PUMJO%ZOBNJDUZQF
%ZOBNJDUZQF
%ZOBNJDUZQF w EZOBNJDܕ w WBMEZOEZOBNJDʜ w ͳΜͰೖΔ
fun dynamicFun(x: dynamic): Unit { }
fun dynamicFun(x: dynamic): Unit { } fun anyFun(x: Any): Unit
{ }
fun dynamicFun(x: dynamic): Unit { x.god } fun anyFun(x: Any):
Unit { x.god // ←ίϯύΠϧΤϥʔ }
%ZOBNJDUZQF w EZOBNJDܕ w WBMEZOEZOBNJDʜ w ͳΜͰೖΔ w ܕνΣοΫΛߦΘͳ͍ʢίϯύΠϧΤϥʔʹͳΒͳ͍ʣ
// xHuman fun dynamicFun(x: dynamic): Unit { x.back.left.left.up.scratch() } class
Back { val left: Back get() = Back() val right: Back get() = Back() val up: Back get() = Back() val down: Back get() = Back() fun scratch(): Unit { println(“ຬʂ”) } } class Human { val back = Back() }
%ZOBNJDUZQF w EZOBNJDܕ w WBMEZOEZOBNJDʜ w ͳΜͰೖΔ w ܕνΣοΫΛߦΘͳ͍ʢίϯύΠϧΤϥʔʹͳΒͳ͍ʣ w
ࣗ༝ʹϓϩύςΟؔΛݺΔ w EZOBNJDܕͷϓϩύςΟؔͷϦλʔϯEZOBNJDܕ
fun dynamicPlus(x: dynamic, y: dynamic): Unit { x + y
}
fun dynamicPlus(x: dynamic, y: dynamic): Unit { x + y
// 3 } dynamicPlus(1, 2)
fun dynamicPlus(x: dynamic, y: dynamic): Unit { x + y
// ڧ } dynamicPlus(“”, “ڧ”)
fun dynamicPlus(x: dynamic, y: dynamic): Unit { x + y
// iOSΤϯδχΞ } dynamicPlus(“iOS”, “ΤϯδχΞ”)
fun dynamicPlus(x: dynamic, y: dynamic): Unit { x + y
// 105ΤϯδχΞ } dynamicPlus(105, “ΤϯδχΞ”)
%ZOBNJDUZQF w EZOBNJDܕ w WBMEZOEZOBNJDʜ w ͳΜͰೖΔ w ܕνΣοΫߦΘͳ͍ʢίϯύΠϧΤϥʔʹͳΒͳ͍ʣ w
ࣗ༝ʹϓϩύςΟؔΛݺΔ w EZOBNJDܕͷϓϩύςΟEZOBNJDܕ w EZOBNJDಉ࢜ͷܭࢉՄೳ
͍͢͝ʂ
͡ΊΑ͏
,PUMJO+4
IUUQTLPUMJOMBOHPSHEPDTEZOBNJDUZQFIUNM %ZOBNJDUZQF
None