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
Good interface: Command pattern as an example
Search
Masafumi Okura
June 08, 2019
Programming
1
1.1k
Good interface: Command pattern as an example
Masafumi Okura
June 08, 2019
Tweet
Share
More Decks by Masafumi Okura
See All by Masafumi Okura
Writing documentation can be fun with plugin system
okuramasafumi
0
120
Alba: Why, How and What's So Interesting
okuramasafumi
0
250
Why did my proposals get rejected?
okuramasafumi
1
540
A suggestion for the future of RDoc
okuramasafumi
1
180
15 JSON serializers for Ruby
okuramasafumi
2
240
Tech Events, Should We See Them from the Outside or the Inside?
okuramasafumi
1
53
Creating gems 101
okuramasafumi
1
100
How NOT to make your DSL terrible
okuramasafumi
0
430
オブジェクトしこう
okuramasafumi
2
340
Other Decks in Programming
See All in Programming
PHP ステートレス VS ステートフル 状態管理と並行性 / php-stateless-stateful
ytake
0
110
PHPカンファレンス名古屋2025 タスク分解の試行錯誤〜レビュー負荷を下げるために〜
soichi
1
520
メンテが命: PHPフレームワークのコンテナ化とアップグレード戦略
shunta27
0
190
XStateを用いた堅牢なReact Components設計~複雑なClient Stateをシンプルに~ @React Tokyo ミートアップ #2
kfurusho
1
940
GoとPHPのインターフェイスの違い
shimabox
2
200
GitHub Actions × RAGでコードレビューの検証の結果
sho_000
0
280
DRFを少しずつ オニオンアーキテクチャに寄せていく DjangoCongress JP 2025
nealle
2
180
新宿駅構内を三人称視点で探索してみる
satoshi7190
2
110
『テスト書いた方が開発が早いじゃん』を解き明かす #phpcon_nagoya
o0h
PRO
3
1.8k
Djangoアプリケーション 運用のリアル 〜問題発生から可視化、最適化への道〜 #pyconshizu
kashewnuts
1
250
富山発の個人開発サービスで日本中の学校の業務を改善した話
krpk1900
5
390
Domain-Driven Transformation
hschwentner
2
1.9k
Featured
See All Featured
RailsConf 2023
tenderlove
29
1k
Making Projects Easy
brettharned
116
6k
Art, The Web, and Tiny UX
lynnandtonic
298
20k
Typedesign – Prime Four
hannesfritz
40
2.5k
Making the Leap to Tech Lead
cromwellryan
133
9.1k
Improving Core Web Vitals using Speculation Rules API
sergeychernyshev
9
500
Put a Button on it: Removing Barriers to Going Fast.
kastner
60
3.7k
The Illustrated Children's Guide to Kubernetes
chrisshort
48
49k
Why Our Code Smells
bkeepers
PRO
336
57k
Principles of Awesome APIs and How to Build Them.
keavy
126
17k
A Philosophy of Restraint
colly
203
16k
Code Reviewing Like a Champion
maltzj
521
39k
Transcript
ྑ͍ΠϯλʔϑΣΠεͷ୳ٻ ίϚϯυύλʔϯΛྫʹ େխ࢙ʢ@okuramasafumiʣ ໊ݹRubyձٞ04―େਢԋܳ 2019-06-08ʢʣ
ࠓͷൃද͕͋ͪͪ͜ʹ ભҠ͍͖ͯ͠·͢ɻ མޠͩͱࢥָͬͯ͠Έͳ͕Β ͓͔͚͖͍ͬͯͯͩ͘͞!
pp self • ໊લɿ͢ͱ·͞;Έʢେխ࢙ʣ • ॴଐɿϑϦʔϥϯε • ׆ಈॴɿ౦ژ • ͖ͳgemɿPry,
RSpec • ӡӦͯ͠ΔίϛϡχςΟɿGrow.rb
໊ݹRubyձٞ
໊ݹRubyձٞ
զʑͳͥRubyΛ͏ͷ͔
Rubyͷ
զʑͳͥRubyΛ͏ͷ͔ • ॻ͖͍͢ • ʮॻ͖͢͞ʯͬͯͳΜͩΖ͏ • ಡΈ͍͢ • ʮಡΈ͢͞ʯͬͯ(ry •
Rails
զʑ͕RubyΛ͏ཧ༝
ϓϩάϥϛϯάָ͕͍͠
ͳͥRubyͰϓϩάϥϛϯάΛ͢Δͱ ָ͍͠ͷͩΖ͏͔ʁ
https://www.atmarkit.co.jp/news/ 200907/24/ruby2.html
yuguiɿ ͦΕɺίϨΫγϣϯ͕͋ͬͯγϟοϑϧ ͍ͨ͠ͱࢥͬͨΒɺshuffleͱॻ͍ͯɺͦΕ Ͱಈ͔ͳ͖Ό͍͚ͳ͍ΜͰ͢Αɻ
ࢥͬͨͱ͓Γʹಈ͘ ʢৗʹಈ͘ͱݴ͍ͬͯͳ͍ʣ
ͱ͜ΖͰɿ ͳΜͰ͜ͷΛ͍ͯ͠Δͷ͔
ָ͘͠ϓϩάϥϛϯάͰ͖Δ ྖҬΛ͍͛ͨʂ
ϥΠϒϥϦΛॻ͍ͯΈΑ͏ →ॻ͖·ͨ͠
https://github.com/okuramasafumi/ neco
150ߦͪΐ͍ͷϥΠϒϥϦ
2ճ΄Ͳॻ͖͍ͯ͠Δ
ΠϯλʔϑΣΠεʹೲಘ͕͍͔ͳ͔ͬͨ
ΠϯλʔϑΣΠεʹ͍ͭͯ ͍Ζ͍Ζߟ͑ͨͷͰɺ ͦͷՌʢʁʣΛڞ༗͍ͨ͠
ͦͦɿ ΠϯλʔϑΣΠεͬͯ ͳΜ͚ͩͬʁ
Interface (MacOSͷࣙॻΑΓ) 1. a point where two systems, subjects, organizations,
etc. meet and interact 2. Computing a device or program enabling a user to communicate with a computer
ΠϯλʔϑΣΠε ίϯϐϡʔλͱͷίϛϡχέʔγϣϯ ͷͱΓํΛܾఆ͢Δͷ
ΠϯλʔϑΣΠεʹϝιου
ΠϯλʔϑΣΠεʹϝιουγάχνϟ
ʮࢥͬͨͱ͓Γʹಈ͘ʯ
Ruby ΠϯλʔϑΣΠεʢ㲓ϝιουγάχνϟʣ ͕ྑ͍͔ΒΘΕ͍ͯΔ
DSL
ҎԼɺ ʮDSLʯʮݴޠDSLʯΛࢦ͠·͢
Domain Specific Language
Ruby͕ΘΕΔཧ༝ͷҰͭ
RubyʹΑΔDSLͷ۩ମྫ • ActiveRecordʢRailsܥʣ • RakeʢϏϧυܥʣ • RSpecʢBDDʣ • PuppetChefɺVagrantʢDevOpsܥʣ •
HomebrewʢύοέʔδϚωʔδϟʣ
ڞ௨
DSLԿ͔Λఆ͍ٛͯ͠Δ
RubyʹΑΔDSLͷ۩ମྫʢ࠶ܝʣ • ActiveRecordʢRailsܥʣ • RakeʢϏϧυܥʣ • RSpecʢBDDʣ • PuppetChefɺVagrantʢDevOpsܥʣ •
HomebrewʢύοέʔδϚωʔδϟʣ
RubyʹΑΔDSLͷ۩ମྫʢఆٛྫ͖ʣ • ActiveRecordʢσʔλϞσϧͷఆٛʣ • RakeʢϏϧυϓϩηεͷఆٛʣ • RSpecʢ·ΕΔৼΔ͍ͷఆٛʣ • PuppetChefɺVagrantʢ֤छΠϯϑϥϦιʔεͷఆٛʣ •
Homebrewʢύοέʔδͷఆٛʣ
ͱ͜ΖͰɿ DSL୯ͳΔΫϥεϝιου ʢͷ߹͕ଟ͍ʣ
ͭ·Γɿ DSL·ͨΠϯλʔϑΣΠε
͜͜·Ͱͷ·ͱΊ • ΠϯλʔϑΣΠε͕ྑ͍ͱָ͘͠ϓϩάϥϛϯάͰ͖Δ • ΠϯλʔϑΣΠεͱ͍͍ͩͨϝιουγάχνϟͷ͜ͱ • ֤ॴͰΘΕ͍ͯΔDSL࣮ͨͩͷϝιου • DSLʮఆٛʯʹڧ͍ •
ΠϯλʔϑΣΠεʮ७ਮͳϝιουʯͱDSLʹ͚ΒΕΔ
https://rubykaigi.org/2019/ presentations/tanaka_akr.html
ྑ͍ΠϯλʔϑΣΠεͬͯ ͳΜͩΖ͏ʁʁʁ
⚠ ͜Εͯ͢ࢲͷ୯ͳΔҰҙݟͰ͢ Ͳ͔ͬͪͱ͍͏ͱ͕΄͍͠… ࠙ձͰ͓͠·͠ΐ͏
ྑ͍ΠϯλʔϑΣΠεͷ̏ݪଇ • ໎Θͳ͍ • ґଘ͠ͳ͍ • ͤ͗͢ͳ͍
໎Θͳ͍ • ϝιου໊ʹࡾ୯ݱͷʮsʯඞཁ͚ͩͬʁ • ͋ͷΫϥεcallͰݺͿΜ͚ͩͬɺperform͚ͩͬʁ • Πϯελϯεϝιου͚ͩͬɺΫϥεϝιου͚ͩͬʁ • Ҿͷॱংʁ
ґଘ͠ͳ͍ • ϝιουνΣʔϯΛલఏͱ͠ͳ͍ʢಛఆͷฦΓʹґଘ͠ͳ ͍ʣ • ςετ࣌ͷελϒ͕ߴʑҰͭͰࡁΉ
ͤ͗͢ͳ͍ • ΤϯυϢʔβʔ͕ࣗྗͰͰ͖Δ͜ͱΒͳ͍ • ୯७ͳόϦσʔγϣϯʹෳࡶͳDSLຊʹඞཁ͔ʁ • ΤϯυϢʔβʔ͕ࣗྗͰΓͮΒ͍͜ͱΛΔ • νΣʔϯͨ͠ϩʔϧόοΫॲཧࣗྗͰ͍͠ʢޙड़ʣ
௨ৗͷϝιου͔DSL͔ɺ ͦΕ͕ͩ
શ෦ϝιουͰ͍͍͡ΌΜɺ DSLͱ͔֮͑Δͷେมͩ͠ʂ Pure Ruby࠷ߴʂ
ͱࢥͬͯͨ࣌ظ͕ʹ͋Γ·ͨ͠…
ϝιουΠϯλʔϑΣΠεͷॴ • ҾselfͳͲ͕ࣗ໌ • ܧঝͨ͠ͱ͖ʹಈ࡞͕ཧղ͍͢͠ • ͦ͜ʹʮࠇຐज़ʯͳ͍
ϝιουΠϯλʔϑΣΠεͷॴ • ॊೈͳڍಈΛఏڙ͢ΔࡍʹϢʔβʔ͕ॻ͖͘ϝιου͕ࡶ ʹͳΓ͕ͪ • ϥΠϒϥϦ͕ϑϩʔΛίϯτϩʔϧ͠Α͏ͱ͢Δࡍʹඞཁͳ ϑοΫΛࠩ͠ڬΉͷ͕͍͠ʢϢʔβʔʹଟͷϝιουΛఆ ٛͯ͠Β͏ඞཁ͕ग़ͯ͘Δʣ
DSLͷॴ • ϒϩοΫҾϝιουҾΑΓॊೈ • దʹ໋໊͞Ε͍ͯΔ߹ɺՄಡੑ͕ߴ͍ • ϥΠϒϥϦ͕ҙͷॲཧΛϢʔβʔఆٛͷॲཧʹڬΈࠐΊΔ ʢϑοΫΩϟογϡͳͲʣ • ԿΛ͍ͨ͠ͷ͔ͷʮఆٛʯΛએݴతʹॻ͚Δ
DSLͷॴ • ʮࠇຐज़ʯ͕ଟ͘ͳΓ͕ͪͷͰɺڍಈΛਖ਼֬ʹѲ͢Δͷ͕ࠔ • దʹ໋໊͞Ε͍ͯͳ͍߹ɺՄಡੑ͕ஶ͘͠མͪΔέʔε͕ ͋Δ • ϝλϓϩάϥϛϯάΛར༻͢Δ߹ɺσόοά͕ࠔʹͳΔ
ॊೈੑͷͰDSL͕༏Ґ
͡Ό͋શ෦DSLΛ༻ҙ͠·͘Ε ͦΕͰ͍͍ͷ͔ʂʁ
ࠇຐज़͡Όͳ͍ͷͦΕʁ
DSLຐज़͕͍ ʢby Joker1007ʣ
அ͕͍͠έʔε
ྫɿ όϦσʔγϣϯఆٛͳͷͰDSLΛ͏ ͔͠͠ɺܕνΣοΫΛDSLͰߦ͏͖͔ʁ
ճྫɿ ͤ͗͢ͳ͍ݪଇʹै͍ɺ࣮ࡍͷ όϦσʔγϣϯϢʔβʔʹͤΔɺ ϥΠϒϥϦόϦσʔγϣϯఆٛͷ ϑοΫDSLͷΈఏڙ
۩ମྫ ʢࠓճͷυϝΠϯίϚϯυύλʔϯʣ
NecoϏδωεϩδοΫΛ ʮίϚϯυʯʹׂ͠ɺ ͦΕΒΛΈ߹ΘͤΔϑϩʔΛ ࢧԉ͢ΔϥΠϒϥϦ
·ͱΊ • ͔ͤͬ͘RubyͰॻ͍ͯΔΜ͔ͩΒΠϯλʔϑΣΠεʹͩ͜Θ Γ͍ͨʢָ͍ͬͯ͠ϥΠϒϥϦ͕΄͍͠ʣ • DSLRubyͷڧΈͰ͋Γɺదʹ໋໊ɾ࣮͢Ε୯७ͳϝ ιουΑΓॊೈͳఆٛΠϯλʔϑΣΠεΛఏڙͰ͖Δ • ͕Μͬͯॊೈͳ͍উखΛࢦͯ͠ΔͷͰNecoͬͯ͘ΕΑͳʢએʣ