Upgrade to Pro
— share decks privately, control downloads, hide ads and more …
Speaker Deck
Sign up for free
Menu
Search
Features
All features
Private URLs
Password Protection
Custom URLS
Scheduled publishing
Remove Branding
Restrict embedding
Deck Collections
Notes
Features
All features
Private URLs
Password Protection
Custom URLS
Scheduled publishing
Remove Branding
Restrict embedding
Deck Collections
Notes
Explore
Featured decks
Featured speakers
Programming
Technology
Storyboards
Explore
Featured decks
Featured speakers
Programming
Technology
Storyboards
Pricing
Search
Sign in
Sign up for free
LTの敷居を下げる / Lower the threshold for LT
Search
Takumi Shotoku
January 11, 2024
Technology
460
2
Share
Embed
Copy iframe code
Copy JS code
Copy link
Start on current slide
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
150
Automatically generating types by running tests
sinsoku
4
20k
滅・サービスクラス🔥 / Destruction Service Class
sinsoku
8
3k
テストを書かないためのテスト/ Tests for not writing tests
sinsoku
1
330
ドメインの本質を掴む / Get the essence of the domain
sinsoku
2
360
"型"のあるRailsアプリケーション開発 / Typed Rails application development
sinsoku
11
3.1k
Let's get started with Ruby && Rails Tips
sinsoku
0
520
CircleCIの高速化🚀 / CircleCI faster
sinsoku
3
1.6k
Railsアプリと型検査 / Rails app and type checking
sinsoku
5
1.7k
Other Decks in Technology
See All in Technology
Benchmarking Disaggregated Serving on vLLM + Dynamo with a Real Coding-Agent Workload
nttcom
1
200
1つのリクエストを追って理解する - llm-dのP/D分離
akhino
1
170
事業成長とデータ活用を止めないためのマネジメントへ挑戦
hiracky16
0
410
How to Design Configuration for Rails Applications
willnet
1
860
パスキーの自動テストはどこまでいけるのか
teamlab
PRO
0
290
ウォンテッドリーの最近のプロダクトと技術の紹介
stomk
0
220
hackers_champloo_2026_tidb
makocchi
0
170
夫婦で子育てするための育児標準化
codmoninc
PRO
0
470
Refining Active Record
shugo
0
170
Tofu-Controller lightning talk @ Containerday 2026
gionn
0
120
Kiro Crewで「みのるん式」仕事術やってみた
minorun365
PRO
3
880
M5Stackで作る BLEマウス GPSログの世界
tomokusaba
PRO
0
440
Featured
See All Featured
Designing for humans not robots
tammielis
254
26k
I Don’t Have Time: Getting Over the Fear to Launch Your Podcast
jcasabona
35
2.9k
The Spectacular Lies of Maps
axbom
PRO
1
1.1k
Chasing Engaging Ingredients in Design
codingconduct
0
360
Visualization
eitanlees
153
17k
Have SEOs Ruined the Internet? - User Awareness of SEO in 2025
akashhashmi
0
520
Dealing with People You Can't Stand - Big Design 2015
cassininazir
367
27k
Templates, Plugins, & Blocks: Oh My! Creating the theme that thinks of everything
marktimemedia
31
2.9k
Save Time (by Creating Custom Rails Generators)
garrettdimon
PRO
33
5.3k
Balancing Empowerment & Direction
lara
6
1.3k
How Software Deployment tools have changed in the past 20 years
geshan
2
35k
コードの90%をAIが書く世界で何が待っているのか / What awaits us in a world where 90% of the code is written by AI
rkaga
63
46k
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