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import CoreData ࠷ۙɺCore DataͲ͏Ͱ͔͢? @nolili Noritaka Kamiya

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CoreData

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CoreData

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NSAsynchronousFetchRequest NSFetchRequest NSPersistentContainer

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NSFetchRequest

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let request = NSFetchRequest(entityName: "Message") context.fetch(request) as! [Message] Force Casting! Before

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let request: NSFetchRequest = Message.fetchRequest() // fetchRequest() -> NSFetchRequest ͸ࣗಈੜ੒͞ΕΔ let messages = context.fetch(request) // [Message] After

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NSFetchRequest NSManagedObjectͷαϒΫϥεΛfetch͢Δ৔߹ʹศར SwiftϑϨϯυϦʔʹ Swift/Objective-C

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NSAsynchronousFetchRequest

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let request: NSFetchRequest = Message.fetchRequest() let asyncRequest = NSAsynchronousFetchRequest(fetchRequest: request) { result in let messages = messages = result.finalResult ?? [] } try! managedObjectContext.execute(asyncRequest)

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let result: NSAsynchronousFetchResult = try! managedObjectContext.execute(asyncRequest) result.cancel()

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NSAsynchronousFetchRequest closureΛ࢖ͬͨඇಉظϑΣονָ͕ʹॻ͚Δ Ωϟϯηϧ͕Ͱ͖Δ ϑΣονͷProgress΋औಘͰ͖Δ iOS 8~

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NSPersistentContainer

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Α͋͘ΔCore DataͷηοτΞοϓ

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/41FSTJTUFOU4UPSF

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/4.BOBHFE0CKFDU.PEFM /41FSTJTUFOU4UPSF

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/41FSTJTUFOU4UPSF$PPSEJOBUPS /4.BOBHFE0CKFDU.PEFM /41FSTJTUFOU4UPSF

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/41FSTJTUFOU4UPSF$PPSEJOBUPS /4.BOBHFE0CKFDU.PEFM /4.BOBHFE0CKFDU$POUFYU /41FSTJTUFOU4UPSF

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/41FSTJTUFOU4UPSF$PPSEJOBUPS /4.BOBHFE0CKFDU.PEFM /4.BOBHFE0CKFDU$POUFYU /4.BOBHFE0CKFDU$POUFYU 1SJWBUF2VFVF /41FSTJTUFOU4UPSF

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ͭΒ͍

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ॳݟࡴ͠

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NSPersistentContainer

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/41FSTJTUFOU$POUBJOFS NSPersistentContainer(name: "iOS10Sampler")

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/41FSTJTUFOU4UPSF$PPSEJOBUPS /4.BOBHFE0CKFDU.PEFM /4.BOBHFE0CKFDU$POUFYU /4.BOBHFE0CKFDU$POUFYU 1SJWBUF2VFVF /41FSTJTUFOU4UPSF NSPersistentContainer(name: "iOS10Sampler") /41FSTJTUFOU$POUBJOFS

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It just works

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NSPersistentContainer (iOS 10~) Α͋͘ΔCoreDataͷηοτΞοϓΛ؆ུԽ طʹ࢖͍ͬͯΔਓʹ͸౰ͨΓલ͔΋͠Εͳ͍͚Ͳͱ͖ͬͭʹ͘͞͸؇࿨͞Ε͍ͯΔ ۜͷ஄ؙͰ͸ͳ͍ɻCoreDataΛ࢖͍͜ͳͨ͢Ίʹ֮͑ͳ͚Ε͹͍͚ͳ͍͜ͱ͸ଟ͍ɻ NSPersistentStoreDescription Λ࢖͑͹ࡉ͔ͳઃఆมߋ΋Մ

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References iOS 10 Sampler https://github.com/shu223/iOS-10-Sampler What’s new in Core Data https://developer.apple.com/videos/play/wwdc2016/242/ SwiftʴCore DataʹΑΔiOSΞϓϦϓϩάϥϛϯά (੢ํՆࢠɺ ؙࢁ߂ࢻ) https://book.mynavi.jp/ec/products/detail/id=50729

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https://www.wantedly.com/projects/61105

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import CoreData ࠷ۙɺCore DataͲ͏Ͱ͔͢? @nolili Noritaka Kamiya