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
elmから学ぼう
Search
mather
April 04, 2016
Programming
1
260
elmから学ぼう
関数型リアクティブなフロントエンド言語であるelmの紹介
mather
April 04, 2016
Tweet
Share
More Decks by mather
See All by mather
SolidjsでLeacTion!を作り直しました / Rebuilt LeacTion! in Solid.js
mather
0
320
Webフレームワークの功罪 / Advantages and considerable point of Web Frameworks
mather
0
470
LeacTion!のアップデートとプチ勉強会へのいざない / Updates of LeacTion and Petit Meetup
mather
0
490
LeacTion!について / About LeacTion!
mather
0
330
Rubyでワンライナー / One-liner on Ruby
mather
0
470
認知と思考パターン / Cognition and Pattern
mather
1
280
「モデル」を考える / Think about "model"
mather
0
380
Shall we make a speech?
mather
0
240
Elmでライフゲーム / LifeGame in Elm
mather
1
1k
Other Decks in Programming
See All in Programming
Reactive Thinking with Signals and the Resource API
manfredsteyer
PRO
0
110
Building, Deploying, and Monitoring Ruby Web Applications with Falcon (Kaigi on Rails 2025)
ioquatix
4
2.5k
AIと人間の共創開発!OSSで試行錯誤した開発スタイル
mae616
2
810
The Past, Present, and Future of Enterprise Java
ivargrimstad
0
270
スキーマ駆動で、Zod OpenAPI Honoによる、API開発するために、Hono Takibiというライブラリを作っている
nakita628
0
320
Writing Better Go: Lessons from 10 Code Reviews
konradreiche
3
6.8k
AI駆動で0→1をやって見えた光と伸びしろ
passion0102
1
850
O Que É e Como Funciona o PHP-FPM?
marcelgsantos
0
200
ソフトウェア設計の実践的な考え方
masuda220
PRO
4
660
チームの境界をブチ抜いていけ
tokai235
0
220
3年ぶりにコードを書いた元CTOが Claude Codeと30分でMVPを作った話
maikokojima
0
650
CSC509 Lecture 07
javiergs
PRO
0
240
Featured
See All Featured
Stop Working from a Prison Cell
hatefulcrawdad
272
21k
Cheating the UX When There Is Nothing More to Optimize - PixelPioneers
stephaniewalter
285
14k
What's in a price? How to price your products and services
michaelherold
246
12k
実際に使うSQLの書き方 徹底解説 / pgcon21j-tutorial
soudai
PRO
190
55k
Practical Orchestrator
shlominoach
190
11k
Performance Is Good for Brains [We Love Speed 2024]
tammyeverts
12
1.2k
How to Think Like a Performance Engineer
csswizardry
27
2.1k
Automating Front-end Workflow
addyosmani
1371
200k
Dealing with People You Can't Stand - Big Design 2015
cassininazir
367
27k
The Straight Up "How To Draw Better" Workshop
denniskardys
238
140k
No one is an island. Learnings from fostering a developers community.
thoeni
21
3.5k
Scaling GitHub
holman
463
140k
Transcript
elm͔Βֶ΅͏ 2016/04/02 ܂ാ ӳࢿ #satoimo
ࣗݾհ • ܂ാ ӳࢿ (32) • גࣜձࣾΞϥλφ • ීஈόοΫΤϯυͬͯ·͢ •
Scalaͱ͔Haskellͱ͔ • ΧϝϥͱεΩϡʔόμΠϏϯά͕झຯ
ࠓͷ༰ • elmͷհ • σϞ • ؔܕͱϦΞΫςΟϒ • ·ͱΊ
elm
elm • http://elm-lang.org/ • ·ͩൃల్্(ݱࡏver. 0.16.0)ͳݴޠ • ؔܕϦΞΫςΟϒͳϑϩϯτΤϯυݴޠ • HTML,
JavaScript(, CSS)Λੜ͢Δ • HaskellϥΠΫͳهड़͕Ͱ͖Δ
લஔ͖ • elm·࣮ͩ༻తͳஈ֊Ͱ͋Γ·ͤΜ • elm͕͑ͳͯ͘ྑ͍Ͱ͢ • Τοηϯε͚ͩͳΜͱͳ͘Θ͔ͬͯ͘ΕΔͱ͋ Γ͕͍ͨͰ͢(^_^ʎ
σϞ
TodoMVC (ެࣜσϞ)
ྃͨ͠λεΫΛআ ະྃͷλεΫ ͲͷλεΫ͕ݟΕΔঢ়ଶ͔ʁ λεΫ ྃͨ͠ʁ λεΫϦετ
ؔܕͱϦΞΫςΟϒ
ঢ়ଶͷͱෳࡶ͞ • ཧ͢Δঢ়ଶͷ͕ଟ͍ˠෳࡶʹͳΔ • ϑϥάͷཧɺදࣔ༻ͷɺetc… • ࣮ࡍʹผͷঢ়ଶʹґଘ͍ͯ͠Δ͜ͱ • ґଘ͍ͯ͠Δͣͷঢ়ଶ͕ಉظ࿙Εˠόά •
ෳͷঢ়ଶΛಉظ͢ΔͨΊͷίʔυ͕૿͑Δ
ґଘ͍ͯ͠Δͣͷঢ়ଶ var str = “hoge”; var len = str.length; var
str = “fugafuga”; if (str.length === len) { // 正常 } else { // 例外処理!? }
ཧ͢Δঢ়ଶΛ࠷খݶʹ͢Δ ΞϓϦέʔγϣϯͷ શͯͷঢ়ଶ ҰͭͷλεΫͷ ঢ়ଶ
ঢ়ଶ͔ΒΛಋ͘ λεΫϦετΛ༩͑Δͱʜ ඞཁͳΛλεΫϦετ͔Β ಋ͖ग़ͯ͠ʜ )5.-Λॻ͖ग़͢ ؔܕ 'VODUJPOBM
ΞΫγϣϯͷͨͼʹ࣍ͷঢ়ଶ "DUJPOΛड͚ͯࠓͷঢ়ଶ͔Β ৽͍͠ঢ়ଶ ʢߋ৽͠ͳ͍ʣ
ΞΫγϣϯܾΊ͓ͯ͘
Ͳ͏ͬͯߋ৽͢Δʁ .PEFM .PEFM .PEFM λεΫՃ λεΫྃ ྃࡁΈ λεΫআ ೖྗ͞ΕͨΞΫγϣϯʹ Ԡͯ͠৽͍͠ঢ়ଶʹ͢Δ
ʹϦΞΫςΟϒ(Reactive)
·ͱΊ
ϦΞΫςΟϒདྷͯ·͢ • ϦΞΫςΟϒͩΜͩΜਁಁ͖ͯͨ͠ • React.jsͱͦͷϑϨʔϜϫʔΫ(Flux) • FluxϑϨʔϜϫʔΫͷҰͭReduxelmΛࢀ ߟʹ͍ͯ͠Δ
ঢ়ଶΛѲͯ͠·͔͢ʁ • Β͵ؒʹ૿͑Δϑϥά • ঢ়ଶύλʔϯͷݟམͱ͠ɾෆ߹ • ͦΕɺؔܕͷߟ͑ํͰ͍͚·͢Αʁ • ඞཁͳঢ়ଶΛߜΓࠐΉ •
ঢ়ଶ͔ΒΛऔΓग़͢Α͏ʹ͢Δ
͋Γ͕ͱ͏͍͟͝·ͨ͠