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Swiftͱ༇շͳ஥ؒͨͪ @akatsuki174

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ࣗݾ঺հ • ਢ౻ຘ • גࣜձࣾZaimॴଐ • iOSΤϯδχΞ • Twitter, Qiita, SlideShare, GitHub, SpeakerDeck, ͸ͯͳϒϩά, note →akatsuki174

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iOSDC2017,2018 ίΞελοϑ

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એ఻

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ɾSwiftͷ஀ੜͱมભ ɾSwiftͱObjective-Cͷؔ܎ ɾSwiftͱଞݴޠͷจ๏ൺֱ ɾ͓·͚ɿPlayground ࠓ೔ͷ಺༰

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͜ͷࢿྉ͸ͳΜͱͳʔ͘SwiftΛ ཧղͯ͠΋Β͓͏ɺͱ͍͏͘Β͍ͷ ςϯγϣϯͰ࡞͍ͬͯΔͷͰઆ໌ෆ଍ɺ ᐆດͳ෦෼΋ଟʑ͋Δͱࢥ͍·͢ɻ ྃ͝ঝ͍ͩ͘͞ɻ

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Swiftͷ஀ੜͱಛ௃

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WWDC2014Ͱൃද

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iOS, macOS, watchOS, tvOS Ͱ࢖͑Δ ɾଞϓϥοτϑΥʔϜͰ΋ ɾɾಉ͡ݴޠͰॻ͚Δ ɾɾಉ͡API͕࢖͑ͨΓ͢Δ

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αʔόʔαΠυͰ΋࢖͑Δ ɾSwift͔͠৮ͬͨ͜ͱͳ͍ਓͰ΋ ɹαʔόαΠυʹ௅ઓ͠΍͍͢ ɾ·ͩීٴ్த ɾϝδϟʔͳϑϨʔϜϫʔΫ ɾɾPerfect ɾɾVapor ɾɾKitura

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ܕਪ࿦͕࢖͑Δ

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Φʔϓϯιʔε ೔ຊਓίϛολʔ΋ଘࡏ

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όʔδϣϯΞοϓ͕ܹ͍͠ ɾ೥1ͰϝδϟʔόʔδϣϯΞοϓ ɾɾ߹ΘͤͯiOSɺXcode΋೥1Ͱ ɹɹϝδϟʔόʔδϣϯΞοϓ ɾഁյతͳมߋʹԿ౓ٽ͔͞Ε͔ͨ ɾ΋͏͍ͩͿམͪண͍͖ͯͨʢ͸ͣʣ

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ʮϞμϯʯͳݴޠ ɾ࠷ۙͷݴޠʹ͋ΔศརػೳΛ౥ࡌ ɾɾΫϩʔδϟ ɾɾλϓϧ ɾɾδΣωϦΫε ɾɾΤΫεςϯγϣϯ ͳͲͳͲ

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ʮ҆શʯͳݴޠ ɾݴޠ࢓༷ϨϕϧͰόά͕ൃੜ͠ʹ͍͘ ɹΑ͏ʹ͍ͯ͠Δ ɾɾOptional ɾɾϝϞϦ֬อɺղ์͕ࣗಈͰߦΘΕΔ ɾɾ੩తݴޠ ͳͲͳͲ

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ʮ҆શʯͳݴޠ ɾݴޠ࢓༷ϨϕϧͰόά͕ൃੜ͠ʹ͍͘ ɹΑ͏ʹ͍ͯ͠Δ ɾɾOptional ɾɾϝϞϦ֬อɺղ์͕ࣗಈͰߦΘΕΔ ɾɾ੩తݴޠ ͳͲͳͲ

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Optional ɾʮnull҆શʯͱ͔ͦ͜Β΁ΜͰΑ͘ ɹ࿩୊ʹͳΔ΍ͭ ɾnilʹͳΔՄೳੑ͕͋Δม਺͸ ɹOptionalܕʹ͢Δ ɾnilʹରͯ͠ૢ࡞Λ͠Α͏ͱͯ͠ ɹΫϥογϡɺΛ๷͙

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Optional ʢίʔυೖΕΔʣ

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Objective-Cͱͷؔ܎

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Ұॹͷ͓͏ͪʹॅΊΔ ɾ1ͭͷϓϩδΣΫτʹࠞͥͯ࢖͏͜ͱ͕ ɹͰ͖Δ ɾͳͷͰ100% Obj-CϓϩδΣΫτͰ΋ɺ ɹঃʑʹSwiftʹॻ͖׵͑Δ͜ͱ͕Ͱ͖Δ ɾBridging HeaderΛ࢖ͬͯSwift͔Β ɹObjective-CɺObjectiveC͔ΒSwiftΛ ɹݺͼग़͢

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Swift͔ΒObjective-CίʔυΛ ࢖͏ ͜Μͳ͔Μ͡ͷهड़ΛBridging Header ʹॻ͘ #import "XYZCustomCell.h" #import "XYZCustomView.h" #import "XYZCustomViewController.h"

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Objective-C͔ΒSwiftίʔυΛ ࢖͏ ͜Μͳ͔Μ͡ͷهड़ΛBridging Header ʹॻ͘ #import "ProductModuleName-Swift.h"

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ଞݴޠͱൺֱͯ͠ΈΑ͏

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͓୊̍ ɾ1ʙ10·Ͱͷ਺஋Λग़ྗ͢Δ ɾ਺஋͸Intܕ

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͓୊̍ɿSwiftͷճ౴ྫ (1...10).forEach { print($0) } Range

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͓୊̍ɿଞݴޠͷճ౴ྫ Java Ruby Kotlin

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͓୊̎ Enum[Orange, Apple, Lemon]ͷ஋Λ ೖΕͨม਺͕Appleͩͬͨ৔߹ɺ ʮ͋ͨΓʂʯͱग़ྗ͢Δ

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͓୊̎ɿSwiftͷճ౴ྫ enum Fruit { case orange, apple, lemon } let fruit = Fruit.apple switch fruit { case .apple: print("͋ͨΓʂ") default: print("͸ͣΕʂ") } ઌ಄খจࣈ breakෆཁ جຊతʹ͸defaultඞਢ

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͓୊̎ɿଞݴޠͷճ౴ྫ Java

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͓·͚ɿPlayground

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Playground ɾΠϯλϥΫςΟϒʹSwiftΛֶ΂Δ ɹπʔϧ

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͝ਗ਼ௌ͋Γ͕ͱ͏͍͟͝·ͨ͠ʂ