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
ScalaMatsuri CFPひとめぐり / ScalaMatsuri CFP quick ...
Search
Taisuke Oe
January 08, 2020
Technology
0
510
ScalaMatsuri CFPひとめぐり / ScalaMatsuri CFP quick tour
Presented on January 8th 2020 at Pre ScalaMatsuri meetup.
Taisuke Oe
January 08, 2020
Tweet
Share
More Decks by Taisuke Oe
See All by Taisuke Oe
ScalaMatsuriの座長を募集するワケ / Why we're looking for new chairperson
taisukeoe
0
1.6k
なぜ Scala 3 で変わったのか / Why things are changed in Scala3?
taisukeoe
6
3.1k
実践Monix導入 / Monix in Action
taisukeoe
4
1.3k
Scalaで関数型 再入門
taisukeoe
13
2.6k
Other Decks in Technology
See All in Technology
バクラク最古参プロダクトで重ねた技術投資を振り返る
ypresto
0
190
内製AIチャットボットで学んだDatadog LLM Observability活用術
mkdev10
0
140
AWS CDK「読めるけど書けない」を脱却するファーストステップ
smt7174
3
200
頼れる Agentic AI を支える Datadog のオブザーバビリティ / Powering Reliable Agentic AI with Datadog Observability
aoto
PRO
0
230
20260311 技術SWG活動報告(デジタルアイデンティティ人材育成推進WG Ph2 活動報告会)
oidfj
0
370
Windows ファイル共有(SMB)を再確認する
murachiakira
PRO
0
200
脳内メモリ、思ったより揮発性だった
koutorino
0
390
Kiro Powers 入門
k_adachi_01
0
120
詳解 強化学習 / In-depth Guide to Reinforcement Learning
prinlab
0
330
欠陥分析(ODC分析)における生成AIの活用プロセスと実践事例 / 20260320 Suguru Ishii & Naoki Yamakoshi & Mayu Yoshizawa
shift_evolve
PRO
0
180
[2] Power BI Deep Dive [2026-03]
ohata_bi
0
100
AI時代のSaaSとETL
shoe116
1
200
Featured
See All Featured
Collaborative Software Design: How to facilitate domain modelling decisions
baasie
0
160
Beyond borders and beyond the search box: How to win the global "messy middle" with AI-driven SEO
davidcarrasco
3
79
Deep Space Network (abreviated)
tonyrice
0
93
XXLCSS - How to scale CSS and keep your sanity
sugarenia
249
1.3M
Why Your Marketing Sucks and What You Can Do About It - Sophie Logan
marketingsoph
0
110
Information Architects: The Missing Link in Design Systems
soysaucechin
0
830
AI in Enterprises - Java and Open Source to the Rescue
ivargrimstad
0
1.2k
DevOps and Value Stream Thinking: Enabling flow, efficiency and business value
helenjbeal
1
150
Future Trends and Review - Lecture 12 - Web Technologies (1019888BNR)
signer
PRO
0
3.3k
Building an army of robots
kneath
306
46k
How to Build an AI Search Optimization Roadmap - Criteria and Steps to Take #SEOIRL
aleyda
1
2k
Large-scale JavaScript Application Architecture
addyosmani
515
110k
Transcript
4DBMB.BUTVSJ $'1ͻͱΊ͙Γ ϓϨ4DBMB.BUTVSJ
ࣗݾհ w 5BJTVLF0F w 5XJUUFS!0&@VJB w 4DBMB.BUTVSJΛओ࠵͍ͯ͠·͢ɻ w εϐʔΧʔܦݧ w
4DBMB%BZT w +$$POG w 4DBMBؔαϛοτ w 4DBMB.BUTVSJͳͲ
ࠓ͍͑ͨ͜ͱ w εϐʔΧʔָ͍ͬͯ͠Α w εϐʔΧʔͱͯ͠ୈҰาΛ౿Έग़͢ಓ͠Δ
͑ΒΕͳ͍͜ͱ w ❌εϐʔΧʔͱͯ͠ͷϕετϓϥΫςΟε w ❌4DBMB.BUTVSJͰԠืηογϣϯ͕࠾༻͞ΕΔํ๏
ΞδΣϯμ w ͦͦɺͳͥΧϯϑΝϨϯεͰΔͷ͔ʁ w εϐʔΧʔʹͳΔʹɺͲ͏͢Ε͍͍ͷ͔ʁ
ͳͥΧϯϑΝϨϯεͰ Δͷ͔ʁ
ͳͥΧϯϑΝϨϯεͰ Δͷ͔ʁ ࢲͷ߹ w εϐʔΧʔʹͳΔͷ͕ɺҰ൪ָ͘͠աͤ͝Δɻ w ษڧ͢ΔϞνϕʔγϣϯʹͳΔɻ w ͕ࣗਪٕ͢ज़Λɺਖ਼͍͍͠ํͱͱʹΊΒΕΔɻ w
ࢀՃඅͷෛ୲͕ݮΔʢՄೳੑ͕ߴ͍ʣɻ
w ࣗΛͬͯ͘Β͏͖͔͚ͬʹͳΔɻ w ໘ന͍Πϕϯτʹ༠ͬͯΒ͑ͨΓɺظతʹࣗ ͷࣄʹܨ͕ͬͨΓ͢Δɻ w ॳର໘ͷਓɺࣗͷ͖ͳʢొஃωλʣͰ͔͠ ͚͖ͯͯ͘ΕΔ্͕͕֬Δɻ w ͦͷݶΓͷೱ͍ू·ΓʢεϐʔΧʔσΟφʔͳͲʣͰٞ
Ͱ͖Δɻ ͳͥΧϯϑΝϨϯεͰ Δͷ͔ʁ ࢲͷ߹
εϐʔΧʔʹͳΔʹ Ͳ͏͢Ε͍͍ͷʁ
εϐʔΧʔʹͳΔʹ Ͳ͏͢Ε͍͍ͷʁ w ηογϣϯެืܕͷΧϯϑΝϨϯεͰΑ͋͘ΔྲྀΕ ςʔϚΛܾΊΔ $'1ʹԠื͢Δ མ݁ՌΛΔ τʔΫͷ४උ͢ΔʢεϥΠυΛ࡞Δʣ ຊ൪ʹΔ
εϐʔΧʔʹͳΔʹ Ͳ͏͢Ε͍͍ͷʁ w 4DBMB.BUTVSJͷྲྀΕ ςʔϚΛܾΊΔΠϚίί $'1ʹԠื͢Δʜ"OZXIFSFPO&BSUIక མ݁ՌΛΔʜ݄த τʔΫͷ४උ͢ΔʢεϥΠυΛ࡞Δʣʜ݄ ຊ൪ʹΔʜ݄ɾ
ςʔϚΛܾΊΔ
ࠓ͕ͧ͘͞Μ ΑΖ͓͘͠ئ͍͠·͢ʂ ࢀߟϓϨ4DBMB.BUTVSJͷͱ͖ͷࢿྉ
$'1ʹԠื͢Δ
$'1ʹԠื͢Δ w ͜ͷ߹ɺ$'1$BMMGPS1SPQPTBMT1SFTFOUBUJPOTͷ ུɻ w ηογϣϯͷҰൠืूͷ͜ͱɻ w $'1ʹର͢ΔԠืͷ͏ͪɺ࠾༻͞Εͨͷ͕λΠϜςʔϒ ϧׂΓͯΒΕ·͢ɻ
4DBMB.BUTVSJ$'1 w ࠓͷΧϯϑΝϨϯε̐τϥοΫʂ w ৄࡉͪ͜Β w IUUQTTDBMBNBUTVSJPSHKBDGQ
Ԡืཁ߲ൈਮ Scala Scala 40 100 20 ) 200 300 (
) 3 1 Repository Pull Request
Ԡืཁ߲ൈਮ Scala Scala 40 100 20 ) 200 300 (
) 3 1 Repository Pull Request
4DBMBϏΪφʔͷఆٛ ͜ͷΧςΰϦɺScalaͰίʔυΛॻ͖࢝Ίͨਓ͕ΑΓScalaΛ͍͜ͳͯ͠ɺૉૣ͘σόοάͨ͠Γɺద ͳநԽΛ͍͜ͳͨ͠ΓɺΫϦʔϯͰ҆શͳίʔυΛॻ͚ΔΑ͏ʹͳΔͨΊͷηογϣϯͰ͢ɻ ྫ͑ ɺҎԼͷΑ͏ͳࢀՃऀΛରͱͨ͠ηογϣϯ͕֘͠·͢ɻ • ScalaͷίϨΫγϣϯૢ࡞Λ͢Δͱ͖ʹmap, flatMap, filter, findͳͲɺجຊతͳͷҎ֎͋·Γͬͨ
͜ͱ͕ͳ͍ɻ • forࣜͰॻ͚Δͷͱͦ͏Ͱͳ͍ͷͷ۠ɺॻ͚Δ͕݅Α͔͘Βͳ͍ɻ • OptionɺTryɺEitherͷ͍͚͕Α͔͘Βͳ͍ɻ͍ͭྫ֎Λ͛ͯ͠·͏ɻ • case classͱclassɺabstract classɺtraitͳͲͷҧ͍͕Α͔͘Βͳ͍ɻ • ύλʔϯϚονΛɺmatchࣜҎ֎Ͱͬͨ͜ͱ͕ͳ͍ɻෳͷύλʔϯΛΈ߹Θ͍ͤͯͬͯͳ͍ɻ • ܕύϥϝʔλʔimplicitͷ͍ॴ͕Α͔͘Βͳ͍ɻͦΕΒ͕ΘΕͨίʔυΛಡΊͳ͍ɻ ৽͍͠ΓޱͰ͜͏͍ͬͨجૅΛղઆ͢Δηογϣϯɺ࠶ೖ͢ΔηογϣϯͳͲɺ͞·͟·ͳΓޱ ͰͷηογϣϯΛืू͠·͢ɻͥͻ͝Ԡื͍ͩ͘͞ɻ
બߟํ๏ൈਮ ScalaMatsuri 2 w ͲͪΒͷબߟํ๏ʹ߹Θͤͨํ͕௨Γ͍͢ɺʢࠓ ಛʹʣͳ͍Ͱ͢ɻ w ԦಓͰมԽٿͰɺۀؔ࿈ͰझຯܥͰܴͰ͢ɻ
4DBMB.BUTVSJ$'1 w కΊΓ"OZXIFSFPO&BSUI w +45
4DBMB.BUTVSJམ w ηογϣϯืूͷకΊΓ͔Βɺि͔ؒΒϲ݄͙Β͍Ͱૹ ͞Ε·͢ɻ4DBMB.BUTVSJͰɺ݄ࠒʙ݄ॳ०Λ༧ఆ͍ͯ͠ ·͢ɻ w Α͋͘ΔޡղΑ͋͘Δޡղʮ࠾༻͞Εͳ͍࣭͕͍ʯͰ͋ Γ·ͤΜɻૉΒ͍͠ηογϣϯͰɺௌऺͷʹ͋Θͳ͔ͬ ͨΓɺΧςΰϦͷภΓʹΑͬͯ࠾༻͞Εͳ͔ͬͨΓ͠·͢ɻ ؾΛམͱ͞ͳ͍Ͱ͍ͩ͘͞ɻ
w 4DBMB.BUTVSJͰʹΞϯΧϯϑΝϨϯεΛ։࠵͠·͢ɻ ʹొஃ͕ܾఆ͞Ε·͢͠ɺଟ͍ͷͰɺͥͻͦͪΒ νϟϨϯδͯ͠Έ͍ͯͩ͘͞ɻ
εϥΠυ࡞ w εϥΠυ࡞͠͡ΊΔલʹɺࢫΛ໌֬ʹ͠·͠ΐ͏ʂ w ʮҰ൪͍͑ͨϝοηʔδʯͬͯͳΜͩΖʁࣗͷϝο ηʔδΛཧղͯ͠Β͏ʹɺͲΜͳࣝࠜڌ͕ඞཁ ͩΖ͏ʁͲ͏͓͖͍ͯ͑ͯͨ͠ࣄ࣮ͬͯɺͳΜͩΖ ͏ʁ
ٕज़తݕূ w ٕज़తͳهड़ʹؒҧ͍͕ͳ͍͔ɺࣗͰݕূ͢ΔบΛͭ ͚·͠ΐ͏ɻ w ݴ༿ͷఆ͕ٛਖ਼͔֬ओޠ͕దͳେ͖͔͞ w அݴ͍ͯ͠Δͷʹ͍ͭͯɺྫ֎ଘࡏ͠ͳ͍ͷ͔
ٕज़తݕূ w ίʔυΛॻ͍ͯಈ͔ͯ͠ݕূͯ͠ΈΔ w ΦϑΟγϟϧͷυΩϡϝϯτʢධͷྑ͍ʣॻ੶ͳͲ ͱɺໃ६͕ͳ͍͔ௐΔ w ʢ044ͳΒʣ֘͢ΔιʔείʔυΛಡΉ w ͦͷ্Ͱɺಉ྅ͳͲʹϨϏϡʔΛґཔ͢Δͷྑ͍ϓϥ
ΫςΟεͰ͢ʂ
࿅श w εϥΠυΛΑΓྑ͘͢ΔͨΊͷ࿅श w εϥΠυ͕Ұ௨ΓͰ͖ͨΒɺ·ͣεϥΠυͷϒϥο γϡΞοϓͷͨΊʹܰ͘࿅शͯ͠Έ·͠ΐ͏ɻ w ͻͱΓͰ࿅श w ·ͣҰਓͰ௨ͯͬͯ͠ΈΔͷ͕ΦεεϝͰ͢ɻ୯७
ʹ׳ΕΔ͚ͩͰͳ͘ɺͷےಓͷෆࣗવ͞ɺͳ ෦ͳͲʹؾ͖ͮ·͢ɻ
࿅श w εϥΠυͷϒϥογϡΞοϓ͕ਐΜͰ͖ͨΒɺࣾൃදձ ɺษڧձͳͲͷ࿅शॴΛͭ͘Γ·͠ΐ͏ɻ w ϑΟʔυόοΫΛੵۃతʹΒ͏ͱɺࢫͷෆ໌ྎͳ ɺٕज़తͳؒҧ͍ͳͲʹؾ͖͍ͮ͢Ͱ͢ɻ
εϥΠυఏग़ w ΧϯϑΝϨϯεʹΑͬͯඞཁͰ͢ɻ w 4DBMB.BUTVSJͰɺӳޠɾࣈນ$P$ͷ֬ೝͷͨΊɺ ݄ͷఏग़Λ͓ئ͍͍ͯ͠·͢ɻ w ͦͷޙඍमਖ਼ՄೳͰ͢ɻͦͷ߹ɺεϥΠυΛ ࠶ૹ͍ͯͩ͘͠͞ɻ
ຊ൪લͷ࿅श w ൃදʹ׳ΕΔͨΊʹɺ࿅श͍͖ͯ͠·͠ΐ͏ɻ࠷ॳͷ͏ͪ ɺࣗͷ͍ͯ͠Δ༷ࢠΛಈըͰࡱͬͯݟฦ͢ͱɺ͍Ζ͍ Ζͳؾ͖͕͋Γ·͢ɻ w ࿅श͢Ε͢Δ΄ͲɺྲྀெʹΕΔΑ͏ʹͳΓ·͢ɻྲྀெʹ ΕΔͱɺࣗ৴͕ੜ·Ε·͢ʂʢٯʹͯ͘͠࿅श͕ෆे ͩͱɺ͏·͘Εͣʹɺ༨ܭʹযͬͨΓ͠·͢ʜʣ w
࣭͞Εͦ͏ͳ͜ͱʹ͍ͭͯɺௐ͓͖ͯ·͠ΐ͏ɻΈΜͳ ͷલͰ࿅श͢ΔͱɺԿʹಥͬࠐ·ΕΔ͔ɺΑ͘Θ͔Γ·͢ɻ
ຊ൪ w εϥΠυΛ࡞ΓࠐΜͰɺ࿅शे͓͚ͯ͠ɺ͋ͱຊ ൪ͰΔ͚ͩͰ͢ɻલ͙ͬ͢Γ৸ͯɺΧϯϑΝϨϯ εָ͠Ή͜ͱʹूத͠·͠ΐ͏ʂ w εϐʔΧʔʹͳΔͷͬͯɺ༐ؾ͕͍Δ͜ͱͰ͢ΑͶɻΈ ͳ͞Μɺ·ͣୈҰาΛ౿Έग़͞Εͨ͜ͱ͕ɺૉΒ͠ ͍ͱࢥ͍·͢ɻ w
εϐʔΧʔʹͳΔ͜ͱͰɺΑΓָ͍࣌ؒ͠Λաͤͨ͝Γɺ ྑ͖ग़ձ͍͕͋Δ͜ͱΛف͍ͬͯ·͢ʂ