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
筋肉kt.pdf
Search
shogo.yamada
November 29, 2018
0
2.5k
筋肉kt.pdf
shogo.yamada
November 29, 2018
Tweet
Share
More Decks by shogo.yamada
See All by shogo.yamada
Jetpack ComposeへのリファクタリングのTIPS: CustomViewの便利な使い方 / Refactoring TIPS to Jetpack Compose: Useful usage of CustomView
yshogo
0
830
Android StudioのLiveTemplateの便利な使い方 / Android LiveTemplate Method
yshogo
0
1.3k
ZOZOの新規サービス 「FAANS」の開発 Android編/FAAN App Create on Android
yshogo
0
1.4k
PORT_Firebase___Algolia.pdf
yshogo
0
230
Flutter_meetup_tokyo__10.pdf
yshogo
0
5.9k
PORT Firebase x Flutter
yshogo
0
400
ZOZOTech meetup Frontend #10
yshogo
2
1.7k
flutter-meetup.pdf
yshogo
0
62
Potetochips #61
yshogo
1
510
Featured
See All Featured
Fireside Chat
paigeccino
37
3.4k
Thoughts on Productivity
jonyablonski
69
4.6k
Embracing the Ebb and Flow
colly
85
4.7k
Practical Tips for Bootstrapping Information Extraction Pipelines
honnibal
PRO
19
1.2k
Designing for Performance
lara
608
69k
Design and Strategy: How to Deal with People Who Don’t "Get" Design
morganepeng
129
19k
How To Stay Up To Date on Web Technology
chriscoyier
790
250k
Large-scale JavaScript Application Architecture
addyosmani
512
110k
[RailsConf 2023] Rails as a piece of cake
palkan
54
5.5k
Rails Girls Zürich Keynote
gr2m
94
13k
How GitHub (no longer) Works
holman
314
140k
Designing Dashboards & Data Visualisations in Web Apps
destraynor
231
53k
Transcript
Copyright © ZOZO Technologies, Inc. All Right Reserved. גࣜձࣾ;0;0ςΫϊϩδʔζ ։ൃ෦
ࢁాঘޗ ,PUMJO1B[[MFST͔Βग़͠· ͢ʂʂʂ
ϓϩϑΟʔϧ 5XJUUFS ;0;0ςΫϊϩδʔζ ։ൃ෦ ࢁాঘޗ Copyright © ZOZO Technologies, Inc.
All Right Reserved. !ZTIPHP (JUIVC !ZTIPHP ދࢹᚳʑͱ 'MVUUFSؔ࿈هࣄ IUUQTXXXTIPHPHFFLDPN
ϓϩϑΟʔϧ Copyright © ZOZO Technologies, Inc. All Right Reserved. ϕϯνϓϨεLH
σοτϦϑτLH εΫϫοτLH ɾϘσΟϏϧ͕͖ ɾυΣΠϯδϣϯιϯʹͳΓ͍ͨ
Copyright © ZOZO Technologies, Inc. All Right Reserved. 'MVUUFSࣸਅڞ༗ΞϓϦ ʮ(SPVQ"MCVNʯ
ݱࡏ$IBUػೳΛ࣮͍ͯ͠·͢ʂ
Copyright © ZOZO Technologies, Inc. All Right Reserved. ,PUMJO1B[[MFSTͱʁ Kotlin
ConfͰൃද͞ΕͨʮKotlinΫΠζʯΈ͍ͨͳͷ https://www.youtube.com/watch?v=Xq9vBZs0j-8
Copyright © ZOZO Technologies, Inc. All Right Reserved. ,PUMJO1B[[MFSTͱʁ ιʔείʔυͱղઆԼهͷϦϙδτϦʹ͋Δ
https://github.com/angryziber/kotlin-puzzlers
Copyright © ZOZO Technologies, Inc. All Right Reserved. ͬͦ͘͞ߦͧ͘ʂʂʂ Έͳ͞ΜҰॹʹߟ͑ͯΈ·͠ΐ͏ʂ
Copyright © ZOZO Technologies, Inc. All Right Reserved. ୈ̍
Copyright © ZOZO Technologies, Inc. All Right Reserved. wB USVF
USVF wC GBMTF GBMTF wD OVMM OVMM wE 8JMMOPUDPNQJMF
Copyright © ZOZO Technologies, Inc. All Right Reserved. ୈ̍ ਖ਼ղͱղઆ
Copyright © ZOZO Technologies, Inc. All Right Reserved. ୈ̍ղઆ ਖ਼ղ
d) Will not compile a -> A ɺ b -> Bɺ c -> bar ͱͨ͠ͱ͖ʹɺ foo(bar<A, B> b)
Copyright © ZOZO Technologies, Inc. All Right Reserved. ୈ̍ղઆ ਖ਼ղ
d) Will not compile a -> A ɺ b -> Bɺ c -> bar ͱͨ͠ͱ͖ʹɺ foo(bar<A, B> b) ͻͱͭͷFunction(ؔ)ͱͯ͠ධՁ͞ΕΔ
Copyright © ZOZO Technologies, Inc. All Right Reserved. ୈ̍ղઆ ίϯύΠϧΛ௨͢ʹ
foo((c < a), b > d)
Copyright © ZOZO Technologies, Inc. All Right Reserved. ୈ̎
Copyright © ZOZO Technologies, Inc. All Right Reserved. wB ,
wC /VMM1PJOUFS&YDFQUJPO wD *MMFHBM4UBUF&YDFQUJPO wE 8JMMOPUDPNQJMF
Copyright © ZOZO Technologies, Inc. All Right Reserved. ୈ̎ ਖ਼ղͱղઆ
Copyright © ZOZO Technologies, Inc. All Right Reserved. ୈ̎ղઆ nameͱ͍͏มʹσʔλ͕ೖΔલʹɺ
logo͕ධՁ͞ΕΔ͔Βɻ KotlinΫϥεΛ Object Kotlin ʹ͢Δͱಈ͘ ਖ਼ղ b) NullPointerException
Copyright © ZOZO Technologies, Inc. All Right Reserved. ୈ
Copyright © ZOZO Technologies, Inc. All Right Reserved. wB )FMMP8PSME
wC )FMMP8PSMEGBMTF wD )FMMP8PSMEUSVF wE XJMMOPUDPNQJMF
Copyright © ZOZO Technologies, Inc. All Right Reserved. ୈ ਖ਼ղͱղઆ
Copyright © ZOZO Technologies, Inc. All Right Reserved. ୈղઆ ɾprintln
ݺͼग़͞Εͨॠؒग़ྗ͞ΕΔ ɾVoid ϝιου Unit Λฦ͢ ɾUnit γϯάϧτϯͰɺ͍͠ͱఆ͞ΕΔ ɾҰ൪֎ͷ print ͕࣮ߦ͞ΕΔલʹ return false͞ΕΔ ਖ਼ղ a) HelloWorld
Copyright © ZOZO Technologies, Inc. All Right Reserved. ୈ̐
Copyright © ZOZO Technologies, Inc. All Right Reserved. wB
wC wD wE
Copyright © ZOZO Technologies, Inc. All Right Reserved. ୈ ਖ਼ղͱղઆ
Copyright © ZOZO Technologies, Inc. All Right Reserved. ୈղઆ ઌʹͷ৭͕ධՁ͞ΕΔɻ
val sum = x?:0 + y ਖ਼ղ c)2
Copyright © ZOZO Technologies, Inc. All Right Reserved. ୈղઆ ઌʹͷ৭͕ධՁ͞ΕΔɻ
val sum = x?:0 + y ܭࢉॲཧͨ݁͠ՌΛnull͔Ͳ͏͔ఆ͢Δ(ΤϧϏεԋࢉࢠ) val sum = x?: 3
Copyright © ZOZO Technologies, Inc. All Right Reserved. ,PUMJOΛͳΊ͍ͯͨ օ͞Μ
ؚࣗΉ
Copyright © ZOZO Technologies, Inc. All Right Reserved. ͝੩ௌ͋Γ͕ͱ͏͍͟͝·ͨ͠ʙʂ ͥͻ࠙ձͰ͓͠·͠ΐ͏ʂʂ