How to make and publish a Swift playground book for iPad

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Χϝϥ͔Βͷը૾ΛϦΞϧλΠϜʹ͍͡ΔPlayPixels Tech. Yuichi Yoshida Senior researcher, DENSO IT Laboratory, Inc. #iOSDC2018 @sonson_twit © 2014 DENSO IT Laboratory, Inc., All rights reserved. Redistribution or public display not permitted without written permission from DENSO IT Laboratory, Inc. Swift Playgrounds Bookͷ࡞Γํͱ഑Γํ

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ࣗݾ঺հ • sonson • twitter: sonson_twit • github: sonsongithub • portfolio • 2tchɾɾɾଟ෼ɼࣙΊΔ • numsw • iOS11 Programming Book(ൃചத) • ࢓ࣄ(computer vision, machine learning) • ը૾ೝࣝɾݕࡧٕज़ • ࠷ۙ͸σʔλαΠΤϯεతͳ͜ͱ΋

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$PSF.-ͱ$SFBUF.-ʹ ͍ͭͯॻ͘Α

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ࠓ೔ͷ໨త

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Swift Playgrounds

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No content

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σϞ • AppleͷσϞ

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ࠓ೔ͷ͓࿩ • ໨త • iPadʹࣗ෼޷ΈͷSwift coding؀ڥΛ࡞Δ • ͦ͏͍͏؀ڥΛΈΜͳͰެ։͋ͬͯ͠ɼָ͠Ή • ࡞Γํͱެ։ํ๏ • Appleۘ੡ͷςϯϓϨʔτʹΑΔ࡞ΓํΛ঺հ • ެ։Ͱ͖ΔΜͰ͢Αɼ͜Ε͕ɽ • Χϝϥͷը૾ॲཧΛ͢Δαϯϓϧ • ը૾ॲཧͷࠜװΛ஌ͬͯ΋Β͏

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͜͏͍͏ͷΛΈΜͳͰ • ର࿩ʢ͓͢͢Ίʣ • Binary searchͷσϞ • ֆจࣈॲཧͷσϞ • numsw - ઢܗ୅਺ • PlayPixelsʢࠓ೔ͷϝΠϯσΟογϡʣ

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͍͍ͱ͜Ζ • ϝΠϯͷ໨త͸ڭҭΒ͍͠ • Ͱ΋Ͷ͐ɾɾίϯςϯπ࡞Δͷେม • iPadͰಈ͘ʂʂʂ • Ͳ͜Ͱ΋ίʔυ͕ॻ͚Δ • ͓खܰɼ͔ͬ͜Α͘σϞͰ͖Δ • ͲΜͲΜਐԽ͍ͯ͠Δ • Χϝϥ͕࢖͑ΔΑ͏ʹͳͬͨʂ • Bluetooth͕࢖͑ΔΑ͏ʹͳͬͨʂ

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ͭΒ͍ͱ͜Ζ • ϑϨʔϜϫʔΫ΍ϥΠϒϥϦ͕࢖͑ͳ͍ • ͢΂ͯιʔείʔυ͸Φʔϓϯʹͳͬͯ͠·͏ • σόοά͕େม • Ϛγʹ͸ͳ͖ͬͯͨ • Apple΍LEGOͷίϯςϯπ͕͗͢͢͝Δ • ૉਓ͕࡞Δͱɼ൵͍͠ɾɾɾɾ

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PlaygroundBookͷ࡞Γํ

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PlaygroundBook

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Playgroundbookͷߏ੒ ├── Chapters │ └── Chapter1.playgroundchapter │ ├── Manifest.plist │ └── Pages │ ├── Basic.playgroundpage │ │ ├── Contents.swift │ │ ├── LiveView.swift │ │ └── Manifest.plist │ ├── Binarize.playgroundpage │ │ ├── Contents.swift │ │ ├── LiveView.swift │ │ └── Manifest.plist │ └── Filter.playgroundpage │ ├── Contents.swift │ ├── LiveView.swift │ └── Manifest.plist ├── Manifest.plist ├── PrivateResources │ ├── Base.lproj │ │ └── LiveView.storyboard │ ├── en.lproj │ │ └── ManifestPlist.strings │ └── icon.png └── Sources ├── LiveViewController.swift └── LiveViewSupport.swift

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֓ཁ -JWF7JFXTXJGU $POUFOUTTXJGU

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࡞Γํ • AppleͷςϯϓϨʔτΛ࢖͏ʢమଇʣ • Swift Playgrounds Author Template for Xcode 9.3Λσ ϕϩούʔαΠτ͔Βμ΢ϯϩʔυ

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·ͣ͸ઃఆ • README.mdͷ”First Step”ʹै͍ɼϓϩδΣΫτͷ໊લ ͱ͔Λมߋ͢Δ • ద౰ʹ΍Δͱ໘౗ष͍͜ͱʹͳΔͷͰ஫ҙ • AppleͷςϯϓϨ͸͔ͳΓνϡʔϯ͞ΕͯΔɾɾɾʁ

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ϓϩδΣΫτͷ ໊લͳͲͷม਺ ·ͣಡΉ Ͱͳ͍ͱϋϚΔ γϛϡϨʔλ্Ͱ#MVFUPPUI ͳͲΛ࠶ݱ͢ΔͨΊͷπʔϧ΍-JC γϛϡϨʔλΞϓϦຊମ 1MBZHSPVOE#PPL ຊମ

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Swift Playgrounds Author Template • ΞϓϦͱͯ͠BookΛಈ͔͠ɼσόοά͠΍͘͢ • Bluetooth౳ͷUIΛΤϛϡϨʔτ • ϏϧυεΫϦϓτ΋ࠐΈ • σόοά • iOS12ͰSwift PlaygroundsͰNSLogΛ࣮ߦͯ͠΋Կ ΋දࣔ͞Εͳ͍ɾɾɾɾ • ͜ͷςϯϓϨʔτ͕།Ұͷ։ൃ؀ڥɾɾɾɾ

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λʔήοτ 4XJGU1MBZHSPVOE#PPL

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λʔήοτ #PPLͷγϛϡϨʔλͱͯ͠ͷΞϓϦ

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λʔήοτ ΞϓϦͷͨΊʹίʔυΛ-JCʹ

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-JWF7JFX5FTUBQQͷͨΊͷ ϑϨʔϜϫʔΫ

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ͷத਎

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playgroundpageͷߏ੒ཁૉ • LiveView.swift • Contents.swift • Manifest.plist

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LiveView.swift • LiveView.swiftʹॻ͘͜ͱ͸͋Μ·Γͳ͍ • LiveViewControllerΛ͜͜Ͱੜ੒ • receiveͰίϯτϩʔϥ͔ΒσʔλΛ͏͚ͱΓඳը • ॏཁͳͷ͸ɼLiveViewControllerͷ࣮૷ import UIKit import PlaygroundSupport PlaygroundPage.current.liveView = sharedLiveViewController

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Contents.swift • ίʔσΟϯάʹؔ͢Δίϝϯτ΍ώϯτɼεέϧτϯίʔυ • ษڧͱͯ͠ͷίϯςϯπ͸ͪ͜Β͕ओ //#-hidden-code import UIKit import PlaygroundSupport //#-end-hidden-code func process(input: UnsafePointer, output: inout [CUnsignedChar], width: Int, height: Int, bytesPerPixel: Int) { //#-editable-code // write your own code //#-end-editable-code } //#-hidden-code class Listener: PlaygroundRemoteLiveViewProxyDelegate { func remoteLiveViewProxy(_ remoteLiveViewProxy: PlaygroundRemoteLiveViewProxy, received message: PlaygroundValue) { // handle message from LiveViewController } } let listener = Listener() if let proxy = page.liveView as? PlaygroundRemoteLiveViewProxy { proxy.delegate = listener } //#-end-hidden-code

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Manifest.plist - Page 1MBZHSPVOE-PHHJOH.PEF0⒎ -JWF7JFX&EHF5P&EHF:&4

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Manifest.plist - Page 1MBZHSPVOE-PHHJOH.PEF/PSNBM -JWF7JFX&EHF5P&EHF:&4

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Manifest.plist - Page 1MBZHSPVOE-PHHJOH.PEF0⒎ -JWF7JFX&EHF5P&EHF:&4

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cutscenepageͷߏ੒ཁૉ • playgroundpageͱ͸ҟͳΓHTML΋දࣔՄೳ • ϑΥϧμ໊ɹ00.cutscenepage • Manifest.plistʹHTMLΛࢦఆ • PrivateResourcesʹݴޠ͝ͱʹHTMLΛ༻ҙ͢Δ • ίʔυෆཁͷϜʔϏʔͬΆ͍ͷʹ࢖͏Α͏ͩ

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جຊίϯηϓτ -JWF7JFXͷϓϩηε $POUFOUͷϓϩηε

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جຊίϯηϓτ -JWF7JFXͷϓϩηε $POUFOUͷϓϩηε

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جຊίϯηϓτ -JWF7JFXͷϓϩηε $POUFOUͷϓϩηε 1SPYZ

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ૹΔͱ͖͸྆ํͱ΋ಉ͡ -JWF7JFXͷϓϩηε $POUFOUͷϓϩηε 1SPYZ TFOE @NFTTBHF1MBZHSPVOE7BMVF

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ૹड৴Ͱ͖Δܕ public enum PlaygroundValue { case array([PlaygroundSupport.PlaygroundValue]) case dictionary([String : PlaygroundSupport.PlaygroundValue]) case string(String) case data(Data) case date(Date) case integer(Int) case floatingPoint(Double) case boolean(Bool) }

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ૹΔͱ͖͸྆ํͱ΋ಉ͡ -JWF7JFXͷϓϩηε $POUFOUͷϓϩηε 1SPYZ TFOE @NFTTBHF1MBZHSPVOE7BMVF

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ड৴͚͕ͩҟͳΔ $POUFOUͷϓϩηε class Listener: PlaygroundRemoteLiveViewProxyDelegate { var pixelBuffer24bit: [CUnsignedChar]? func remoteLiveViewProxy(_ remoteLiveViewProxy: PlaygroundRemoteLiveViewProxy, received message: PlaygroundValue) { // handle a message } func remoteLiveViewProxyConnectionClosed(_ remoteLiveViewProxy: PlaygroundRemoteLiveViewProxy) { } } let listener = Listener() if let proxy = page.liveView as? PlaygroundRemoteLiveViewProxy { proxy.delegate = listener }

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ૹΔͱ͖͸྆ํͱ΋ಉ͡ -JWF7JFXͷϓϩηε $POUFOUͷϓϩηε 1SPYZ TFOE @NFTTBHF1MBZHSPVOE7BMVF

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ड৴͚͕ͩҟͳΔ -JWF7JFXͷϓϩηε @objc(Book_Sources_LiveViewController) public class LiveViewController: UIViewController, PlaygroundLiveViewMessageHandler, PlaygroundLiveViewSafeAreaContainer { public func receive(_ message: PlaygroundValue) { update(message) } }

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جຊίϯηϓτ -JWF7JFXͷϓϩηε $POUFOUͷϓϩηε 1SPYZ

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PlayPixelsͷ৔߹ -JWF7JFXͷϓϩηε $POUFOUͷϓϩηε 1SPYZ ը૾ॲཧ $BNFSB ͜ͷॲཧͷίʔυ $POUFOUTTXJGU Ωϟϓνϟͨ͠ ը૾Λ%BUBʹ

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PlayPixelsͷ৔߹ -JWF7JFXͷϓϩηε $POUFOUͷϓϩηε 1SPYZ %BUBʹ ύοΩϯά 6**NBHFʹ 6**NBHF7JFXʹηοτ

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LiveViewTest.app • UIApplication౳Λվ଄ʁ • LiveViewControllerͷಈ࡞֬ೝ༻ͷΞϓϦ • Swift Playgroundsઐ༻ͷUIͷςετ • ͦͷͨΊͷBluetoothͳͲͷϑϨʔϜϫʔΫ • Contents.swiftͷ୅ཧίʔυͷ࣮૷͕ඞཁ ࢖͏΂͖ɽσόοάͰࢮͶΔ #if LiveViewTestApp // γϛϡϨʔλͰಈ͔͢ͱ͖͸ɼϝιουΛ௚Ͱୟ͖ɼContents.swiftͷ୅ΘΓΛ࣮ߦ self.update(value) #else // PlaygroundͰಈ͔͢ͱ͖͸ɼproxyܦ༝ͰContents.swiftʹσʔλΛૹΔ self.send(value) #endif

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Playground Book • PlaygroundSupportͱݺ͹ΕΔϞδϡʔϧ͕৭ʑػೳΛఏڙ • ςϯϓϨʔτͰγϛϡϨʔγϣϯՄೳ • PlaygroundValueܕͰ౉ͤΔσʔλͷܕͷόϦΤʔγϣϯ͕গͳ͍ • ؔ਺ͱ͔౉ͤͳ͍ • LiveViewTest.app͸ɼContents.swiftͱແؔ܎ • ίϯςϯπΛ͏·͘දࣔͤ͞ΔͨΊͷςετίʔυ͕ඞཁ

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։ൃͷྲྀΕʁ • TemplateΛฤू • LiveViewControllerΛ࣮૷ • AppDelegate.swiftͰίϯςϯπΛදࣔ͢ΔίʔυΛ ॻ͘(Contents.swift) • iPad࣮ػͰɼLiveViewTest.appΛςετ • PlaygroundBookΛϏϧυ • AirDropͰiPad࣮ػʹPlaygroundBookΛૹΔ • Swift PlaygroundsͰ࣮ߦ͢Δ

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υΩϡϝϯτ • Playground Book Format Reference • Swift PlaygroundsͷϓϩδΣΫτࣗମ͕ιʔεͷๅݿ

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Furthermore, • Contents.swiftͷৄ͍͠ઃఆ • ίϯςϯπ࡞ΓͶ • ଟݴޠԽʢَ໳ʣ • Key-value store΋͋Δ • AssesmentStatus • ϢʔβͷਐḿධՁ༻ͷ࢓૊Έʁ

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PlaygroundBookΛެ։͢Δ

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ެ։ํ๏ • ࠷ۙ΍ͬͱެ։Ͱ͖ΔΑ͏ʹͳͬͨ • Ϣʔβ͕Swift Playgrounds͔ΒfeedΛొ࿥Մೳ • ϒϥ΢β͔Βొ࿥͢Δ͜ͱ΋Ͱ͖Δ

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खॱ • ެ։ͷͨΊͷjsonϑΝΠϧ(feed)Λ࡞Δ • BookΛෳ਺ݸऩΊΒΕΔ • ϋϚΔϙΠϯτ • λΠτϧͱ໊લ͕Ұக • λΠτϧͱղౚޙͷ໊લ͕Ұக • identiﬁer͕Ұக

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feed { "title": "sonson", "publisherName": "Yuichi Yoshida", "feedIdentifier": "com.sonson.playground", "contactURL": "mailto:[email protected]", "formatVersion": "1.0", "documents": [ { "title": "PlayPixels", "overviewSubtitle": "To be written.", "detailSubtitle": "αϒλΠτϧৄࡉ", "description": "ৄ͍͠આ໌", "contentIdentifier": "com.sonson.playground.PlayPixels", "contentVersion": "1.0", "url": "https://sonson.jp/playgrounds/playpixels/PlayPixels.playgroundbook.zip", "publishedDate": "2018-05-18T12:00:00+00:00", "lastUpdatedDate": "2018-05-18T12:00:00+00:00", "thumbnailURL": "playpixels/thumbnail.png", "bannerImageURL": "playpixels/thumbnail.png", "additionalInformation": [ { "name": "Languages", "value": "English" } ], "previewImageURLs": [] } ] }

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खॱ • ެ։ͷͨΊͷjsonϑΝΠϧ(feed)Λ࡞Δ • BookΛෳ਺ݸऩΊΒΕΔ • ϋϚΔϙΠϯτ • λΠτϧͱ໊લ͕Ұக • λΠτϧͱղౚޙͷ໊લ͕Ұக • identiﬁer͕Ұக • feedʹࢦఆͨ͠ύεʹzipͰݻΊͨbookϑΝΠϧΛஔ͘ ├── feed.json ├── index.html └── playpixels ├── PlayPixels.playgroundbook.zip └── thumbnail.png

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ϒϥ΢β͔ΒμΠϨΫτʹొ࿥ "https://developer.apple.com/ul/sp0?url=https://sonson.jp/playgrounds/feed.json"

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https://sonson.jp/playgrounds/

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Swift Playgrounds͕ىಈ

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ొ࿥ɾɾɾɾײಈ

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PlayPixelsͰֶͿը૾ॲཧͷجຊ

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https://github.com/sonsongithub/PlayPixels

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ը૾ॲཧͷجຊ

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ը૾ॲཧͷجຊ

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ը૾ॲཧͷجຊ

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ը૾ॲཧͷجຊ

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৞ΈࠐΈԋࢉʔϑΟϧλ ೖྗը૾ ग़ྗը૾

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ϑΟϧλ

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৞ΈࠐΈԋࢉʔϑΟϧλ ೖྗը૾ ग़ྗը૾

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৞ΈࠐΈԋࢉʔϑΟϧλ ೖྗը૾ ग़ྗը૾ º

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৞ΈࠐΈԋࢉʔϑΟϧλ ೖྗը૾ ग़ྗը૾

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৞ΈࠐΈԋࢉʔϑΟϧλ ೖྗը૾ ग़ྗը૾

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৞ΈࠐΈԋࢉʔϑΟϧλ ೖྗը૾ ग़ྗը૾

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৞ΈࠐΈԋࢉʔϑΟϧλ ೖྗը૾ ग़ྗը૾ ϑΟϧλͷαΠζͰ ͪΐͬͱখ͘͞ͳΔ

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͜Ε͸ɾɾɾͲΜͳϑΟϧλʁ

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࣮͸ ܀ాଟت෉ɺ੺ึতଠ࿠, ύλʔϯೝࣝ ૣҴాେֶߨٛ – ฏ੒18೥౓

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ྲྀߦΓͷCNN Y. Lecun, L. Bottou, Y. Bengio and P. Haffner, "Gradient-based learning applied to document recognition," in Proceedings of the IEEE, vol. 86, no. 11, pp. 2278-2324, Nov. 1998. ͜ͷॏΈΛػցֶशͰಘΔ

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·ͱΊ • Swift playgroundsͷָ͠͞ • Swift Playgrounds Author TemplateΛ࢖͓͏ • Bookͷجຊ • Proxyϕʔεͷϓϩάϥϛϯά • Feedͷઃఆ • ެ։͸ɼPlayground.appͰͰ͖Δʂ • PlayPixelsͰֶͿɼը૾ॲཧͷجຊ