ざっくりわかるSwift

https://connpass.com/event/60103/
#TokyoTechLT

Transcript

1. ͬ͘͟ΓΘ͔ΔSwift
   TokyoTech LT #2 @S_Shimotori
   

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2. ୭ʁ
   • @S_Shimotori (@S_Shimotori_pub)
   • ৘ऑΤֶܥM2
   • DroidKaigiӡӦελοϑ
   • Swift΍PythonΛॻ͍͓ͯۚΛ໯͏͓࢓ࣄ
   

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3. DroidKaigi2018
   ։࠵ܾఆʂ
   2018೥2݄8-9೔@ϕϧαʔϧ৽॓άϥϯυ
   https://droidkaigi.github.io/2018/
   

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4. AndroidͱiOSͷ؀ڥͷҧ͍
   • Android
   • ॳճ͚ͩొ࿥ྉΛ෷͑͹OK
   • ೔ຊAndroidͷձ͕͋Δɺֶੜ෦΋͋Δ
   • ࠓKotlin͕೤͍ʂ
   • iOS
   • ຖ೥͓෍ࢪ͕ඞཁ
   • ͦΜͳձ͚͋ͬͨͬ
   • ·ͨSwift4ʹॻ͖׵͑Δ࡞ۀ͕͸͡·Δ͓…
   

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5. ϞόΠϧͷ࿩͸Ҏ্ʂ
   

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6. ຊ୊
   

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7. ͓඼ॻ͖
   • Swiftͷจ๏ͷ֓ཁ
   • Swift͕࢖͑Δ৔ॴ
   • CϥΠϒϥϦͷݺͼग़͠
   • Swiftʹ͍ͭͯ΋ͬͱ஌Γ͍ͨͱ͖͸
   

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8. ͓඼ॻ͖
   • Swiftͷจ๏ͷ֓ཁ
   • Swift͕࢖͑Δ৔ॴ
   • CϥΠϒϥϦͷݺͼग़͠
   • Swiftʹ͍ͭͯ΋ͬͱ஌Γ͍ͨͱ͖͸
   

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9. Swiftͷจ๏ͷ֓ཁ
   

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10. ཁ໿͢Δͱ͜Μͳ͔Μ͡ʂ
    • ϓϩτίϧࢦ޲ / ΦϒδΣΫτࢦ޲ /

    ؔ਺ܕ / ໋ྩܕ / ϒϩοΫߏ଄
    • ڧ͍੩తܕ෇͚ / ܕਪ࿦
    • Objective-C౳͔ΒͷӨڹ͋Γ
    • Swift4Ӷҙ੡࡞த
    • ܕ҆શnull҆શɻૉ੖Β͍͠ɻ
    • LLVMͱ͔ͳΜͱ͔
    https://en.wikipedia.org/wiki/Swift_(programming_language)
    

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11. ϓϩτίϧࢦ޲ʁ
    

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12. Swiftyʹॻ্͘Ͱ೺Ѳ͓͖͍ͯͨ͜͠ͱ
    • Swiftʹ͸classͷଞʹstructɺenumɺprotocolΛ࣋ͭ
    • protocol͸”ಛఆͷॲཧͷͨΊͷϝιουͷઃܭਤ”
    • JavaͰ͍͏ͱ͜Ζͷinterface
    • ͭ·Γ࢖Θͳͯ͘΋ಈ͔ͳ͍͜ͱ͸ͳ͍
    • Swift3ඪ४ϥΠϒϥϦͷ201γϯϘϧͷ͏ͪɺ

    struct͸140ݸɺenum͸12ݸɺprotocol͸48ݸɺ

    class͸ͳΜͱ1ݸʂ
    

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13. Java ComparableͱSwift Comparable
    • Java Comparable
    • Swift Comparable
    μΠϚ http://qiita.com/S_Shimotori/items/83e22d83f5c0096a6d5b
    http://hg.openjdk.java.net/jdk8/jdk8/jdk/file/687fd7c7986d/src/share/classes/java/lang/Comparable.java
    https://github.com/apple/swift/blob/c15c671372620b543e19a662218a247f601628e4/stdlib/public/core/Comparable.swift
    ※ ࣮ࡍ͸Equatableͷ “=” ͱComparableͷ ”<“ Λ࣮૷͢Ε͹଍ΓΔ
    

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14. OptionalͱCommandLine
    • Optional͸enum Optional
    • .some(Wrapped)ͱ.noneΛྻڍ
    • Nullableͷਖ਼ମ
    • enum CommandLine͸ྻڍͯ͠ͳ͍
    • ྻڍܕࣗ਎͕ΠχγϟϥΠζ͞Εͳ͍ಛੑΛར༻
    https://github.com/apple/swift/blob/master/stdlib/public/core/CommandLine.swift
    https://github.com/apple/swift/blob/master/stdlib/public/core/Optional.swift
    
    Optionalͷ౶ҥߏจ
    

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15. ͪͳΈʹ: ԋࢉࢠΛఆٛ͢Δ
    • Swift͸ࣗ෼ͰԋࢉࢠΛఆٛ͢Δ͜ͱ͕Մೳ
    • ओʹؔ਺ܕ͍ͨ͠ਓ͕࡞Δ “>=“
    • ࢖͑Δه߸͸ແ೉ͦ͏ͳ΍ͭ
    • / = - + ! * % < > & | ^ ~ ?ͱ͔ଞ͍Ζ͍Ζ
    • ͑ʁ$͕ͩΊͳͷʹὺ͕࢖͑Δͷʁʁ
    

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16. ܕਪ࿦΋͋ΔΜͩͶ͐
    ͍͍ͪͪܕΛॻ͔ͳ͍͍ͯ͘Ͷʂ
    

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17. SwiftͰܕਪ࿦ͱ͍ͬͨΒ……
    • ʮίϯύΠϧ࣌ؒͷେ൒͕ܕਪ࿦͡ΌΜwʯ
    • ʮਪ࿦ʹ͔͔͔࣌ؒͬͨΒίϯύΠϧఘΊ·ͨ͠Τϥʔʯ
    • ղܾࡦ:
    • ৽͍͠όʔδϣϯͷSwift(ͱXcode9)Λ࢖͏
    • એݴ࣌ʹͪΌΜͱܕΛॻ͘
    • ؔ਺ܕͳΜͯͳ͔ͬͨɻ͍͍Ͷʁ
    

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18. ΤϥʔදݱͲ͏ͳͬͯΜͷʁ
    

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19. Swiftʹ͓͚ΔΤϥʔදݱ
    • جຊతʹ͸NonNullɺthrow΋ͳ͠
    • ੒ޭ/ࣦഊͷ2஋͸໭Γ஋NullableͰදݱ
    • Optional.some(Wrapped)ͰแΜͰฦ͢
    • Լॲཧ͠ͳ͍ͱแΜͩத਎͸࢖͑ͳ͍ʂ
    • ΑΓৄࡉͳΤϥʔදݱΛ͢ΔͳΒErrorΛ౤͛Δ
    • Τϥʔ͕ى͖ͳ͍͜ͱ͕໌Β͔ͳΒ͹”!”Ͱ௵͢
    

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20. ͓඼ॻ͖
    • Swiftͷจ๏ͷ֓ཁ
    • Swift͕࢖͑Δ৔ॴ
    • CϥΠϒϥϦͷݺͼग़͠
    • Swiftʹ͍ͭͯ΋ͬͱ஌Γ͍ͨͱ͖͸
    

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21. Swift͕࢖͑Δ৔ॴ
    

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22. ͋ʔ͸͍͸͍iOSͶ
    ڵຯͳ͍ΜͰ✋
    

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23. DarwinҎ֎Ͱ΋࢖͑Δ͔Βʂ
    ͕͢͞ʹ2.2͸ݹ͍͕
    

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24. LinuxͰSwift
    • swift.orgͷUbuntu༻όΠφϦ͔dockerΛ࢖͏ͷָ͕
    • Կ͔࡞Δ࣌͸Swift Package ManagerΛ࢖͏ͱྑ͍
    • ґଘؔ܎ղܾͨ͠Γςετͨ͠Γ͢Δ
    • ίϚϯυϥΠϯπʔϧ͕࡞ΕΔ
    • WebϑϨʔϜϫʔΫͰWebΞϓϦ͕࡞ΕΔ
    • Perfectͱ͔Vaporͱ͔ͦͷ΁Μ
    

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25. ͱ͜ΖͰ
    

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26. Swift͕Ͱ͖Δ͜ͱɺ୯඼Ͱ͸Ͱ͖ͳ͍͜ͱ
    • Swift಺ଂͷඪ४ϥΠϒϥϦ͕Ͱ͖Δ͜ͱ
    • هड़ʹඞཁͳػೳͷجຊ૚
    • Stringͱ͔printͱ͔ͦ͏͍͏ͷ
    • “import Foundation”ͰͰ͖Δ͜ͱ
    • ΞϓϦͷجຊతͳػೳʹؔΘΔૢ࡞
    • ϑΝΠϧͱ͔ηογϣϯͱ͔ͦ͏͍͏ͷ
    • Darwin༻FoundationͱLinux༻Foundation͸ผ෺
    (௚༁)
    

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27. swift-corelibs-foundationਐḿঢ়گ(7݄17೔ݱࡏ)
    https://github.com/apple/swift-corelibs-foundation/blob/master/Docs/Status.md
    “Unimplemented”
    

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28. ͓඼ॻ͖
    • Swiftͷจ๏ͷ֓ཁ
    • Swift͕࢖͑Δ৔ॴ
    • CϥΠϒϥϦͷݺͼग़͠
    • Swiftʹ͍ͭͯ΋ͬͱ஌Γ͍ͨͱ͖͸
    

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29. CϥΠϒϥϦͷݺͼग़͠
    (SPMͰͷ)
    iOS/macOS͸΋ͬͱ͔ΜͨΜɻ
    

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30. SPMͰCϥΠϒϥϦΛ࢖͏
    • ޙൃݴޠΒ͘͠ͲΜͲΜઌഐͷҨ࢈Λ࢖͍ͬͯ͘
    • Foundation͕ΞϨͳͷͰ࢖͍ݹ͞ΕͨϥΠϒϥϦͷ
    ํ͕҆৺
    • SPMͰϥοϓ͠ɺ1ͭͷύοέʔδͱͯ͠ѻ͏
    • ґଘϦετʹ͸Swiftͷ΋ͷ΋Cͷ΋ͷ΋ҰॹʹฒͿ
    • ໊લΛCHogeͱ͢Δ׳ྫ͕͋Δ
    • cURLͳΒCCurlͱ͔
    

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31. ໰୊͕ൃੜ͢Δ΍Γํ
    ΅͘ͷߟ͍͖͑ͨ͞ΐ͏ͷ41.ύοέʔδ
    ύοέʔδ" ύοέʔδ# ύοέʔδ$
    *#.4XJGU
    $$VSM
    44IJNPUPSJ
    $$VSM
    D63-
    ·Ί͖ͪ͠: IBM͸͕Μ͹ͬͯSwiftͯ͠Δɻ͍͍ͻͱɻ
    ໊લিಥ
    (ґଘݩˠґଘઌ)
    

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32. ͓඼ॻ͖
    • Swiftͷจ๏ͷ֓ཁ
    • Swift͕࢖͑Δ৔ॴ
    • CϥΠϒϥϦͷݺͼग़͠
    • Swiftʹ͍ͭͯ΋ͬͱ஌Γ͍ͨͱ͖͸
    

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33. Swiftʹ͍ͭͯ
    ΋ͬͱ஌Γ͍ͨͱ͖͸
    

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34. ͱΓ͋͑ͣॻ͖ͳ͕Β΍ͬͯΈ͍ͨʂ
    • ԦಓXcodeͰߦ͖͍ͨਓ
    • Xcode8ʹ͸ϦϑΝΫλϦϯάػೳ͕ͳ͍(স)
    • playgroundsͰؾܰʹॻ͚Δɺͨͷ͍͠
    • JetBrainsڭͷਓ
    • iOSͱҰॹʹ΍ΔͳΒAppCodeɺpure SwiftͳΒCLion
    • Vimmer
    • ͪΌΜͱߋ৽͕௥͍͍ͭͯΔͷ͸ͳ͍Μ͡Ό…
    • Emacser
    • ͪΌΜͱߋ৽͞ΕͯΔɺͣΔ͍
    

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35. ͋ͱ͸͜ͷลಡΜͰ͓͘ͱ͍͍Αɻ
    • https://developer.apple.com/library/content/documentation/Swift/
    Conceptual/Swift_Programming_Language/
    • https://developer.apple.com/documentation/swift
    • https://swift.org/
    

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36. ·ͱΊ
    

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37. Swiftͷ͕͍͜͜͢͝ʂ
    • ڧ͍੩తܕ෇͚ͰprotocolͰenumͰ͍͢͝ʂ
    • αʔό΋ίϚϯυϥΠϯπʔϧ΋࡞ΕΔʂ
    • ͦΕPythonͰΑ͘ͳ͍ʁ
    • ಈతܕ෇͚͸அͯ͡Noɺઈରʹڐ͞ͳ͍
    • ͦΕGo
    • ͦͷՄೳੑ͸͋Δ
    • ͦΕKotlin
    • ૉͰAWSLambda͍͚ΔΜͩ΋ΜͳʔͣΔ͍Αͳʔ
    

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