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
LTの敷居を下げる / Lower the threshold for LT
Search
Sponsored
·
SiteGround - Reliable hosting with speed, security, and support you can count on.
→
Takumi Shotoku
January 11, 2024
Technology
430
2
Share
LTの敷居を下げる / Lower the threshold for LT
【オフライン開催】Omotesando.rb #93
https://omotesandorb.connpass.com/event/305893/
Takumi Shotoku
January 11, 2024
More Decks by Takumi Shotoku
See All by Takumi Shotoku
TypeProf 開発レポート 2026-05 / TypeProf Dev Report 2026-05
sinsoku
1
110
Automatically generating types by running tests
sinsoku
4
18k
滅・サービスクラス🔥 / Destruction Service Class
sinsoku
8
2.8k
テストを書かないためのテスト/ Tests for not writing tests
sinsoku
1
300
ドメインの本質を掴む / Get the essence of the domain
sinsoku
2
350
"型"のあるRailsアプリケーション開発 / Typed Rails application development
sinsoku
10
3k
Let's get started with Ruby && Rails Tips
sinsoku
0
500
CircleCIの高速化🚀 / CircleCI faster
sinsoku
3
1.5k
Railsアプリと型検査 / Rails app and type checking
sinsoku
5
1.6k
Other Decks in Technology
See All in Technology
ポスター発表&デモと総括 / Poster Presentations & Demonstrations and Summary
ks91
PRO
0
180
Agentic AI時代における メルカリのAIガバナンスとガードレール実装
naoichihara
17
17k
個人AIからチームAIへ:開発における品質と生産性の再設計
moongift
PRO
0
340
マーケットプレイス版Oracle WebCenter Content For OCI
oracle4engineer
PRO
5
1.7k
Mastering Ruby Box
tagomoris
3
110
基礎から解説!Icebergで紐解くSnowflake×Databricks連携の現在地
cm_yasuhara
0
410
Gradle×GitHub_ActionsでCI時間を約50%短縮 ジョブ分割の設計と落とし穴 / Cutting CI Time by ~50% with Gradle and GitHub Actions: Job-Splitting Design and Pitfalls
takatty
0
550
先取りMaven4 ~16年ぶりのメジャーアップデート、その進化とは?~
ogiwarat
0
110
JJUG CCC 2026 Spring AI時代の開発こそ標準化を武器に! ― 方式・プロセス・プラットフォームの標準化
s27watanabe
2
640
【Gen-AX】20260530開催_JJUG CCC 2026 Spring
genax
0
110
Spring AI × MCP 入門〜AIエージェントへのツール公開、境界設計から始める最小構成 〜
yuyamiyamoto
0
190
Javaで学ぶSOLID原則
negima
1
250
Featured
See All Featured
Design of three-dimensional binary manipulators for pick-and-place task avoiding obstacles (IECON2024)
konakalab
0
440
Git: the NoSQL Database
bkeepers
PRO
432
67k
Digital Projects Gone Horribly Wrong (And the UX Pros Who Still Save the Day) - Dean Schuster
uxyall
0
1.5k
Ecommerce SEO: The Keys for Success Now & Beyond - #SERPConf2024
aleyda
1
2k
Highjacked: Video Game Concept Design
rkendrick25
PRO
1
370
How To Stay Up To Date on Web Technology
chriscoyier
790
250k
SEO for Brand Visibility & Recognition
aleyda
0
4.6k
Navigating Weather and Climate Data
rabernat
0
200
Impact Scores and Hybrid Strategies: The future of link building
tamaranovitovic
0
300
The Illustrated Children's Guide to Kubernetes
chrisshort
51
52k
Prompt Engineering for Job Search
mfonobong
0
320
Why You Should Never Use an ORM
jnunemaker
PRO
61
9.9k
Transcript
LTͷෑډΛԼ͛Δ Omotesando.rb #93 2024/01/11 1
ࣗݾհ • ໊લ: ਖ਼ಙ (aka: ਆ) • GitHub: @sinsoku (ը૾ӈ্)
• Twitter: @sinsoku_listy (ը૾ӈԼ) • ͖ͳݴޠ: Rust ! , Ruby " • Railsྺ: 8͘Β͍ 2
એ: ໌1/12(ۚ)ʹ։࠵ ձ גࣜձࣾϚωʔϑΥϫʔυ ͞Μʹ͓आΓ͠ɺRBSܕΛ৮ ΔձΛ͠·͢ɻ 3
͢͜ͱ • ! LTͷෑډ͕ߴ͍ʁ • ⭐ LTͷϝϦοτ • # εϥΠυͷ࡞ΓํͳͲ
• $ ͓·͚: Rubyͷ • Omotesando.rb ͳͷͰ 4
! LTͷෑډ͕ߴ͍ʁ • ొஃͯ͢͠ωλ͕ແ͍ • ਓલͰ͢ͷ͕ۤख • ܦݧ͕ແ͍ͷͰෆ҆ 5
͢ωλ Omotesando.rb ຖ݄։࠵ͯ͠ΔͷͰɺRubyؔ࿈Ͱ৽֮͑ͨ͘͠ Կ͔Λ͘͢Β͍ͷؾ࣋ͪͰྑ͍ɻ • Rubyͷศརϝιουɺػೳͷհ • ͋·ΓΒΕ͍ͯͳ͍ڍಈͷհ • ʮ͜Ε͕όάͷݪҼͰͨ͠ʯͳͲ1
1 ⚠ ۀͷ۩ମྫΛ͠ա͗ͳ͍Α͏ʹҙ 6
ਓલͰ͢ͷ͕ۤख / ܦݧ͕ແ͍ͷͰෆ҆ 7
ͦΕͳ 8
͢ͷ͕ۤख / ෆ҆ ొஃܦݧ͕૿͑Δͱɺগ͠׳ΕΔɻ ͨͩɺਓ͕૿͑ΔͱࠓͰۓு͢Δɻ 9
LTʹର͢Δߟ͑ํ • ⏳ Ͱ͖Δ͚ͩ 5 ͰऴΘΒͤΔ • LT͕໘ന͘ͳͯ͘5ͳΒେৎ • "
୭͔ͷʹཱͭ 10
࣭ 1. Omotesando.rb ॳࢀՃͷํ 2. Ruby/Railsͷܦݧ͕3ະຬͷํ 11
⭐ LTͷϝϦοτ • ! ొஃͷޙʹใ͕ू·Δ • " ొஃͷ࿅शʹͳΔ • #
كʹొஃґཔΛड͚Δ 12
! εϥΠυ࡞ιϑτ • Google Slides • Deckset for Mac 13
Google Slides • ແྉ • Windows, Mac Ͱར༻Մ • ៉ྷͳσβΠϯ͕࡞ΕΔ
• จࣈɾը૾Λࣗ༝ʹஔͰ͖Δ ҎલʹΑ͍ͬͯͨ͘ɻձࣾͷςʔϚΛ͏ͱ͖ͬͪ͜ɻ 14
Desckset for Mac • ༗ྉʢ$35/one-timeʣ • ϚʔΫμϯه๏Ͱ࡞Մೳ • GitHubͰཧͰ͖Δ •
จࣈɾը૾ͷஔʹ੍ݶ͕͋Δ ࠷ۙͬͪ͜Λ͍ͬͯΔɻ࣌ؒͰεϥΠυ͕࡞Εͯศརɻ 15
! ը૾Λ͏ • ! จࣈ͚ͩͩͱ୯ௐʹͳΔ • ✨ ҹʹΔ • #
্ख͘͏ͱ໘ന͍ 16
ΞϯΨʔϚωδϝϯτͷษڧͰಡΜͩຊ • ΞϯΨʔϚωδϝϯτೖ • ଞऀͱಇ͘ / ʮΘ͔Γ͋͑ ͳ͞ʯ͔Β࢝ΊΔ৫ • ࣗͷখ͞ͳʮശʯ͔Β
ग़͢Δํ๏ • ը૾ 17
⚠ ஶ࡞ݖͷѻ͍ • εϥΠυͷར༻άϨʔ2 • ΦϯϥΠϯެ։ආ͚ͨํ͕ྑ͍ • SpeakerDeck ʹ্͛Δલʹফ͢ •
ΧϯϑΝϨϯεͰར༻Λආ͚ͨํ͕ྑ͍ 2 ৄ͘͠ͳ͍ͷͰࣗ৴ͳ͍ 18
! αʔόαΠυΤϯδχΞ ͜ΕαόͰ͢ ! 19
! map, flat_map, filter_map ͷհ map p [1, 2, 3].map
{ |n| n * 3 } #=> [3, 6, 9] 20
! map ͱ flat_map ͷҧ͍ map [[1,2], [3,4]].map { |i|
i.map { |j| j*2 } } #=> [[2, 4], [6, 8]] flat_map [[1,2], [3,4]].flat_map { |i| i.map { |j| j*2 } } #=> [2, 4, 6, 8] 21
! map ͱ filter_map ͷҧ͍ map (1..10).map { |i| i
* 2 if i.even? } #=> [nil, 4, nil, 8, nil, 12, nil, 16, nil, 20] filter_map (1..10).filter_map { |i| i * 2 if i.even? } #=> [4, 8, 12, 16, 20] 22
! ͥͻ࣍ճొஃ͠·͠ΐ͏ 23