love-swift-vol8 - Speaker Deck

love-swift-vol8

by Kato Jun

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SwiftΛ࣮Ҋ݅Ͱ࢖ͬͯ ΞϓϦΛϦϦʔεͨ͠࿩ 2016.6.27 ू·ΕSwift޷͖ʂSwiftѪ޷ձ vol8 Kato Jun@Classmethod, Inc

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About Me • ໊લɿՃ౻ ५ • ձࣾɿΫϥεϝιου ϞόΠϧΞϓϦαʔϏε෦ॴଐ • ͓࢓ࣄɿiOSΞϓϦ։ൃ • ϒϩάɿhttp://dev.classmethod.jp/author/kato-jun/

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Agenda • SwiftͰΞϓϦΛ࡞Δ͜ͱʹͳͬͨܦҢ • ࢖ͬͨπʔϧ • SwiftͰϋϚͬͨͱ͜Ζ • Swift 3ରԠ • ·ͱΊ

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SwiftͰΞϓϦΛ࡞Δ ͜ͱʹͳͬͨܦҢ

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࣌͸5ϲ݄΄Ͳલ…

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ͱ͋ΔडୗҊ݅Ͱ iOSΞϓϦΛ։ൃ͢Δ͜ͱʹ…

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ݴޠͷબ୒

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Obj-C or Swift ?

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Obj-C or Swift ? ϝϦοτ σϝϦοτ 0CK$ ɾʢݸਓతͳʣΞϓϦͷϦϦʔεܦݧ͋Γ ɾࣾ಺ʹϊ΢ϋ΢ɺ࣮੷͕๛෋ ɾϒϥέοτʢ<>ʣॻ͔ͳ͍ͱ͍͚ͳ͍ ɾIͱN ɾ0QUJPOBMܕͱ͔΋ͪΖΜͳ͍ 4XJGU ɾ͜Ε͔Β࡞ΔͳΒײ ɾ؆ܿͳهड़ ɾ0QUJPOBMܕ͕࢖͑Δ ɾʢݸਓతͳʣΞϓϦͷϦϦʔεܦݧແ͠ ɾʢ0CK$ʹൺ΂ͯʣࣾ಺ʹϊ΢ϋ΢ɺ࣮ ੷͕গͳ͍

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ͳ͔ͳ͔λΠτͳεέδϡʔϧ…

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ϓϩϚω ʮݴޠͷ໰୊ͰϋϚΓͨ͘ ͳ͍ͷͰObj-C͔ͳʯ

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ࢲ SwiftͰେৎ෉Ͱ͠ΐ(´∀ʆ;)

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ͦͷޙ৭ʑͳਓ͔Β ॿݴΛड͚…

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Swift Ͱ։ൃ͢Δ͜ͱʹʂ

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࢖ͬͨπʔϧ

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Tailor

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Tailor • Swift༻ͷ੩తίʔυղੳπʔϧ • ҎԼͷελΠϧΨΠυϥΠϯʹଇ͍ͬͯΔ͔ΛνΣοΫ ͯ͠ڭ͑ͯ͘ΕΔ • The Swift Programming LanguageʢAppleʣ • GitHub • Ray Wenderlich • Coursera

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Tailor • ࠷৽όʔδϣϯ͸0.10.0ʢ6/27ݱࡏʣ • Swift 2.2ʹରԠ • ΫϩεϓϥοτϑΥʔϜʢMac͸΋ͪΖΜLinux΍ WindowsͰ΋࢖͑Δʣ • MITϥΠηϯε • Xcodeʹ૊ΈࠐΜͰϏϧυ࣌ʹ࣮ߦ͢Δ͜ͱ͕Մೳ

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TailorΛXcodeʹ૊ΈࠐΉ • tailor --xcode

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Tailor͕νΣοΫͯ͘͠ΕΔ͜ͱ • ྫ͑͹ɺΫϥε໊ͷنଇ

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Tailor͕νΣοΫͯ͘͠ΕΔ͜ͱ • ྫ͑͹ɺηϛίϩϯ

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TailorΛಋೖͯ͠ྑ͔ͬͨ఺ • ਓྗͰνΣοΫ͠Α͏ͱ͢Δͱ࿙Ε͕ൃੜͦ͠͏ͳ෦ ෼ΛػցతʹνΣοΫͰ͖ͨ • ίʔυϨϏϡʔ࣌ʹϏδωεϩδοΫʹूதͰ͖ͨ • ಛʹηϛίϩϯ͸࠷ॳͷ͏ͪObjective-CͷบͰແҙࣝ Ͱ͚ͭͯ͠·͏͜ͱ͕ଟ͔͕ͬͨɺϏϧυ࣌ʹؾ෇͍ ͯमਖ਼͢Δ͜ͱ͕Ͱ͖ͨ

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TailorΛಋೖͯ͠Θ͔ͬͨ͜ͱ • ίʔυྔ͕૿͑ͯ͘ΔͱɺղੳʢϏϧυʣʹ͕͔͔࣌ؒ ΔΑ͏ʹͳͬͨ • ϓϩδΣΫτ࡞੒௚ޙ͸1ʙ2ඵ͕ͩͬͨɺ࠷ऴతʹ਺ ेඵ͔͔ΔΑ͏ʹͳͬͨ • Ϗϧυͷ౓ʹ࣮ߦ͢Δӡ༻͔ΒϦϦʔεͷ௚લʹ·ͱΊ ͯνΣοΫ͢Δӡ༻ʹมߋ

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SwiftͰϋϚͬͨͱ͜Ζ

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ZXingObjC • Objective-CͰ࡞ΒΕͨόʔίʔυϥΠϒϥϦ • https://github.com/TheLevelUp/ZXingObjC • όʔίʔυͷੜ੒ & όʔίʔυͷಡΈऔΓͰ࢖༻

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Կ͕໰୊͔ͩͬͨ • όʔίʔυੜ੒࣌ʹNSException͕ൃੜͨ͠ • ྫ͑͹ɺҎԼͷέʔεͰൃੜ • όʔίʔυܗࣜ͸EAN-13͕ͩɺ࣮ࡍͷܻ਺͕13Ͱ͸ ͳ͔ͬͨ࣌ • SwiftͰ͸NSExceptionΛΩϟονͰ͖ͳ͍ͷͰΫϥο γϡʢhttps://forums.developer.apple.com/thread/ 7582ʣ • Ϋϥογϡͤ͞ͳ͍Α͏ʹ͢Δඞཁ͕͋ͬͨ

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Ͳ͏ରॲ͔ͨ͠ • Obj-CͰNSExceptionΛNSErrorʹม׵ /4&YDFQUJPO͕ൃੜˠ/4&SSPSΛੜ੒

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Ͳ͏ରॲ͔ͨ͠ • ݁ՌɺSwiftͰ΋NSErrorͱͯ͠ΩϟονͰ͖ΔΑ͏ʹ /4&SSPSͱͯ͠ΩϟονͰ͖ΔΫϥογϡ͠ͳ͍

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ϋϚͬͨͱ͜Ζ͸͋ͬͨ΋ͷͷ ແࣄʹ༧ఆ௨ΓϦϦʔεͰ͖·ͨ͠ʂ

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Swift 3ରԠ

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։ൃத͔ΒSwift 3Λҙࣝ • Xcode 7.3Ͱdeprecatedͳॻ͖ํΛ͍ͯ͠Δͱࢦఠͯ͘͠Εͨ • কདྷ࢖͑ͳ͘ͳΔදݱ͸։ൃத͔Β࢖Θͳ͍Α͏ʹͨ͠ JTEFQSFDBUFEJUXJMMCF SFNPWFEJO4XJGU $TUZMFGPSTUBUFNFOUJT EFQSFDBUFEBOEXJMMCFSFNPWFE JOBGVUVSFWFSTJPOPG4XJGU

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WWDC 2016 • What's New in Swift • Swiftͷมߋ఺ • ಺༰͸swift-evolutionͷproposal • Xcode 8 supports both Swift 2.3 and Swift 3 • ϚΠάϨʔγϣϯ࣌ʹ2.3ͱ3ͲͪΒΛ࢖༻͢Δ͔બ΂ Δ

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Swift 3ରԠͰӨڹ͕େ͖ͦ͏ͳͱ͜Ζ • SE-0046ɿؔ਺ͷୈҰҾ਺ʹ΋ݺͼग़࣌͠ʹϥϕϧ͕ඞ ཁʹͳͬͨ • SE-0069ɿ৽͍͠struct͕௥Ճ͞Εͨ • ex.) NSDate→Date • ex.) timeIntervalSinceDate→timeIntervalSince • SE-0006ɿenumͷcase͕lower camel caseʹ

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Xcode 8 betaͷϚΠάϨʔγϣϯΛࢼͯ͠Έͨ • Swift 2.2Ͱॻ͍ͨ؆୯ͳϓϩάϥϜ • Xcode 8 betaͰ͸ϏϧυΤϥʔ func func1(param1: Int, param2: Int) { } func func2() { func1(100, param2: 200) let date = NSDate() let interval = date.timeIntervalSinceDate(NSDate()) print(interval) } enum Fruit { case Apple case Banana case Orange } ͜ͷϓϩάϥϜʹ&EJU$POWFSU5P$VSSFOU4XJGU4ZOUBYʜΛ ࣮ߦ͢Δͱʜ

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Use Swift 2.3Λબ୒ͨ͠৔߹ • ιʔείʔυͷมߋແ͠ͰϏϧυ͕௨ΔΑ͏ʹͳͬͨ

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Use Swift 3Λબ୒ͨ͠৔߹ • ؔ਺ఆٛͷୈҰҾ਺ϥϕϧʹʮ_ʯ͕௥Ճ͞Εͨʢݺͼग़͠ଆͷมߋ͸ͳ͠ʣ • ܕͷஔ׵ʢNSDate→Dateʣ • ؔ਺ͷஔ׵ʢtimeIntervalSinceDate→timeIntervalSinceʣ func func1(_ param1: Int, param2: Int) { } func func2() { func1(100, param2: 200) let date = Date() let interval = date.timeIntervalSince(Date()) print(interval) } enum Fruit { case apple case banana case orange } @͕௥Ճ͞Εͨ ݺͼग़͠ଆͷมߋ͸ͳ͠ ؔ਺ͷஔ׵ ܕͷஔ׵ DBTF͕MPXFSDBNFMDBTFʹ

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·ͱΊ

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·ͱΊ • SwiftࣗମʹϋϚͬͯࠔͬͨ͜ͱ͸ҙ֎ͱগͳ͔ͬͨ • Ή͠ΖOS΍ϑϨʔϜϫʔΫͷ஌ࣝͷํ͕େࣄ • ΋͏Obj-Cʹ͸໭Εͳ͍… Swift͸ॻ͖΍͍͢ʂ • TailorʹݶΒͣػցతʹνΣοΫͰ͖Δ͜ͱ͸πʔϧʹ೚ͤΑ͏ • Obj-C੡ͷOSSΛSwiftͰ࢖͏ͱ͖͸NSExceptionʹؾΛ͚ͭΑ͏ • Swift 3ରԠ͸XcodeͷϚΠάϨʔλΛ࢖͑͹ػցతʹม׵ͯ͘͠ ΕΔ • ͋͘·ͰػցతͳͷͰϓϩδΣΫτಠࣗͷϧʔϧͳͲʹରԠͤ͞ Δ৔߹͸खಈͰͷରԠ͕ඞཁ

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࠷ޙʹ

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Ϋϥεϝιου΋Swiftͷษڧձ΍ͬͯ·͢ʂʂ • AKIBA.swift • ݄1ϖʔεͰ։࠵ • @ΫϥεϝιουؠຊொΦϑΟε