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
Measurement And Unitを試した話
Search
Atsushi Uchida (utwang)
July 31, 2016
Programming
0
580
Measurement And Unitを試した話
集まれSwift好き!Swift愛好会 vol9での発表資料です。
Atsushi Uchida (utwang)
July 31, 2016
Tweet
Share
More Decks by Atsushi Uchida (utwang)
See All by Atsushi Uchida (utwang)
Apple公式ガイドを さっくりと読んでまとめてみた UIScrollView編
utwang
0
230
Apple公式ガイドさっくりまとめ ファイルシステム編
utwang
0
42
頻出pryコマンド
utwang
0
130
設計ポイントの 比較で知る Backbone.js
utwang
9
7k
Other Decks in Programming
See All in Programming
Android 16 × Jetpack Composeで縦書きテキストエディタを作ろう / Vertical Text Editor with Compose on Android 16
cc4966
2
260
知っているようで知らない"rails new"の世界 / The World of "rails new" You Think You Know but Don't
luccafort
PRO
1
180
rage against annotate_predecessor
junk0612
0
170
Introducing ReActionView: A new ActionView-compatible ERB Engine @ Rails World 2025, Amsterdam
marcoroth
0
710
JSONataを使ってみよう Step Functionsが楽しくなる実践テクニック #devio2025
dafujii
1
620
意外と簡単!?フロントエンドでパスキー認証を実現する WebAuthn
teamlab
PRO
2
770
複雑なフォームに立ち向かう Next.js の技術選定
macchiitaka
2
210
How Android Uses Data Structures Behind The Scenes
l2hyunwoo
0
480
Swift Updates - Learn Languages 2025
koher
2
490
FindyにおけるTakumi活用と脆弱性管理のこれから
rvirus0817
0
530
概念モデル→論理モデルで気をつけていること
sunnyone
3
290
CJK and Unicode From a PHP Committer
youkidearitai
PRO
0
110
Featured
See All Featured
Helping Users Find Their Own Way: Creating Modern Search Experiences
danielanewman
29
2.9k
It's Worth the Effort
3n
187
28k
No one is an island. Learnings from fostering a developers community.
thoeni
21
3.4k
Building Applications with DynamoDB
mza
96
6.6k
A Tale of Four Properties
chriscoyier
160
23k
Building Flexible Design Systems
yeseniaperezcruz
329
39k
Thoughts on Productivity
jonyablonski
70
4.8k
A designer walks into a library…
pauljervisheath
207
24k
How to train your dragon (web standard)
notwaldorf
96
6.2k
個人開発の失敗を避けるイケてる考え方 / tips for indie hackers
panda_program
113
20k
実際に使うSQLの書き方 徹底解説 / pgcon21j-tutorial
soudai
PRO
188
55k
Scaling GitHub
holman
463
140k
Transcript
Measurement And Unit Λࢼͨ͠ 2016/7/31 ू·ΕSwift͖ʂSwiftѪձ vol9
ࣗݾհ ాರ೭ (@utwang) • ϑϦʔϥϯεΤϯδχΞ כϲ࡚ࡏॅ • Swift, Rails, Javascript
• εϊʔϘʔυ͖ • ݸਓͰυϥΠϒͷׂΓצΞϓϦͩ͠·ͨ͠
׆ಈ ԣपลͰษڧձ/ΠϕϯτΛͬͯ·͢ • Railsͷ͘͘ձ/Swiftͷ͘͘ձ
• 8/21() Ϋϩʔϥʔͷӡ༻ʹ·ͭΘΔLTΠϕϯτ εϐʔΧʔɺઈࢍืूதͰ͢
ΞδΣϯμ • Ϟνϕʔγϣϯ • Measurementͱ • Կ͕Ͱ͖Δ͔ʁ • Measurement/Unitͷ͍ํ •
MeasurementΛߏ͢ΔΫϥε • ͬͯΈͯͷײ
Xcode8 beta3Ͱࢼͨ͠༰Ͱ͢ɻ ਖ਼ࣜϦϦʔε൛Ͱ༰͕ҟͳΔՄೳੑ͕͋Γ·͢ɻ
Ϟνϕʔγϣϯ • ݸਓͰ࡞ͬͨΞϓϦͷӳޠରԠ • ݴޠಉ͡Ͱ୯Ґ͕ҟͳΔ߹͕͋ Δ͕ɺશ෦ϩʔΧϥΠζରԠ͢Δͷ େม • ΞϝϦΧ: ӳޠ
/mile /gallon(US) /$ • ΠΪϦε: ӳޠ /mile /gallon(UK) /£ • Χφμɹ: ӳޠ /km /liter /CA$ • WWDC2016Ͱൃද͞Ε ͨ"Measurement And Unit"ΛௐΔ
Measurementͱ • iOS10͔Βར༻Ͱ͖ΔFoundationͷίϯϙʔωϯτ • Swift2.3ͰNSMeasurement • Swift3.0ͰMeasurement • ܭྔͷ֓೦Λදݱͨ͠ΫϥεͰྔͱ୯ҐΛऔΓѻ͏
Կ͕Ͱ͖Δ͔ʁ • ͋Δܭྔͷ୯ҐΛผͷ୯ҐมͰ͖Δ • 15 km <-> 9.32 mile •
30 kg <-> 13.6 lb (ϙϯυ) • localeʹ߹Θͤͯదͳ୯ҐΛϑΥʔϚοτ • ΧελϜͷ୯ҐɺܭྔΛ࡞
Measurementͷ͍ํ(1) ྔͱ୯ҐΛ1ͭͷΠϯελϯεͱͯ͠ཧɾίϯόʔτ • ج४ͱͳΔ୯Ґ(baseUnit)Λݩʹม • ͞ͷ߹meter͕baseUnitͱͳΔ let distanceInJapan = Measurement(value:
80, unit: UnitLength.kilometers) // => 80.0 km let distanceInUS = distanceInJapan.converted(to: UnitLength.miles) // => 49.7098189319845 mi
Measurementͷ͍ํ(2) ΧελϜͷ୯ҐΛ࡞Ͱ͖Δ • ೩අͷϓϦηοτ L/100km, mile/gal(US), mile/gal(UK) • ຊͰkm/LͰද͢ͷ͕Ұൠతɻج४ͷL/100km͔ΒͷൺΛ ࢦఆͯ͠৽ͨʹ୯ҐΛ࡞Δɻ
let kmPerLiter = UnitFuelEfficiency(symbol: "km/l", converter: UnitConverterLinear(coefficient: 0.25)) //UnitFuelEfficiencyͷextensionͱͯ͠ఆٛՄೳ let fuelEfficiencyInJp = Measurement(value: 10, unit: kmPerLiter) // => 10 km/L
Measurementͷ͍ํ(3) localeʹ߹Θͤͨ୯ҐΛมߋ • LocaleใΛͭMeasurementFormatter͕༻ҙ͞Ε͍ͯΔ • Regionʹదͨ͠୯ҐΛදࣔ͢Δ let mFormatter = MeasurementFormatter()
mFormatter.unitStyle = .short let distance = Measurement(value: 400, unit: UnitLength.kilometers) mFormatter.string(from: distance) // => 248.549 mi (in US) // => 400 km (in Canada)
MeasurementΛߏ͢ ΔΫϥε • Measurement(ܭྔ) • Unit(୯Ґ) • Dimension(ཧྔͷ࣍ݩ) • நΫϥε
• UnitXXX (UnitAngle, UnitLength, UnitVolume ...) • Dimensionͷ۩Ϋϥε • UnitConverter
MeasurementΛߏ͢ ΔΫϥε ৽͍͠ཧྔͷ࣍ݩΛ࡞Δ߹ • DimensionΛܧঝͨ͠UnitTypingSpeed Λ࡞ • ֤୯Ґͱͯ͠UnitTypingSpeedܕΛࣗ Λฦ͢ϓϩύςΟΛ༻ҙ͢Δ class
UnitTypingSpeed: Dimension { static let punchPerSecond = UnitTypingSpeed(symbol: "punch/s") static let charsPerMinute = UnitTypingSpeed(symbol: "chars/min", converter: UnitPunchToCharConverter())
ͬͯΈͯͷײ ͍ॴ • ͋Δ୯ҐͷܭྔΛผͷ୯ҐͰද͍ࣔͨ͠߹ • ҬͰ୯ҐΛΓସ͍͑ͨ߹ Θͳ͍͍ͯ͘(͑ͳ͍)ॴ • ୯ҐΛ୯ͳΔϥϕϧͱͯ͠ද͍ࣔͨ͠߹ •
֎෦ཁૉͰൺ͕มΘΔͳͲɺ୯७ͳมͰͳ͍߹ (୯ՁͳͲҝସมಈͷӨڹΛड͚Δ(20 $/lb => 2500 ¥/kg))
͍ॴ
͓·͚ ୯Ґͷॻ͖ํࠃࡍతʹܾΊΒΕ͓ͯΓɺͷޙʹ֯̍Ϛε ۭ͚ɺ୯ҐΛॻ͘ɻྫ͑ɺ1.50 kgͱॻ͘ɻ — ग़యݩ: Wikipedia