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
350
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
2.7k
About HealthKit nutrition
coe
0
410
iOSDC 2023 Web in tvOS and watchOS
coe
1
640
iOSDC 2023 Push To Talk
coe
1
2k
iOSDC手で触れずにアプリを動かす技術
coe
1
1.7k
iOSDC令和時代のXML処理を考える
coe
3
2.5k
iOSDC 2021 Restore
coe
6
2k
詳解Storyboard
coe
7
3.6k
あなたの知らない連絡先の世界
coe
15
8.2k
Other Decks in Technology
See All in Technology
Кто отправит outbox? Валентин Удальцов, автор канала Пых
lamodatech
0
330
監視のこれまでとこれから/sakura monitoring seminar 2025
fujiwara3
11
3.8k
[TechNight #90-1] 本当に使える?ZDMの新機能を実践検証してみた
oracle4engineer
PRO
3
160
“社内”だけで完結していた私が、AWS Community Builder になるまで
nagisa53
1
330
A2Aのクライアントを自作する
rynsuke
1
160
GitHub Copilot の概要
tomokusaba
1
130
AWS テクニカルサポートとエンドカスタマーの中間地点から見えるより良いサポートの活用方法
kazzpapa3
2
490
Абьюзим random_bytes(). Фёдор Кулаков, разработчик Lamoda Tech
lamodatech
0
320
PostgreSQL 18 cancel request key長の変更とRailsへの関連
yahonda
0
120
LinkX_GitHubを基点にした_AI時代のプロジェクトマネジメント.pdf
iotcomjpadmin
0
170
CSS、JSをHTMLテンプレートにまとめるフロントエンド戦略
d120145
0
270
Fabric + Databricks 2025.6 の最新情報ピックアップ
ryomaru0825
1
120
Featured
See All Featured
RailsConf & Balkan Ruby 2019: The Past, Present, and Future of Rails at GitHub
eileencodes
138
34k
I Don’t Have Time: Getting Over the Fear to Launch Your Podcast
jcasabona
32
2.3k
ReactJS: Keep Simple. Everything can be a component!
pedronauck
667
120k
10 Git Anti Patterns You Should be Aware of
lemiorhan
PRO
657
60k
Visualization
eitanlees
146
16k
Keith and Marios Guide to Fast Websites
keithpitt
411
22k
Let's Do A Bunch of Simple Stuff to Make Websites Faster
chriscoyier
507
140k
RailsConf 2023
tenderlove
30
1.1k
Music & Morning Musume
bryan
46
6.6k
Statistics for Hackers
jakevdp
799
220k
A Modern Web Designer's Workflow
chriscoyier
693
190k
Fashionably flexible responsive web design (full day workshop)
malarkey
407
66k
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