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iOS ք۾ Swift3 Ҡߦͷҋ ezura
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iOS ΤϯδχΞͷਓ
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iOS ΤϯδχΞͱࣄͯ͠Δਓ
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·ͩɺଉͯ͠·͔͢ (´ɾωɾʆ)ʁ
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"\(self)" • ezura • iOS ΤϯδχΞ • ࠷ۙ Swift2 ͔Β Swift3 ͷҠߦͷ͓ࣄ
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"\(self)" • ezura • iOS ΤϯδχΞ • ࠷ۙ Swift2 ͔Β Swift3 ͷҠߦͷ͓ࣄ
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͍͑ͨ͜ͱ
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Swift3 ରԠ͍ͯ͠ͳ͍ iOS ΤϯδχΞͷํ ֮ޛ͍ͯͩ͘͠͞
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iOS ΤϯδχΞͱࣄ͍ͯ͠Δํ ԾʹɺSwift3 Ҡߦͷਐḿ͕ѱͯ͘ ͝ཧղͷ΄ͲɺΑΖ͓͘͠ئ͍͠·͢…
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Index • ҋʹࢸΔܦҢ • ҋΛΓӽ͑ΔͨΊʹ • Swift3 ͷॻ͖͑ޙʹൃੜͨ͜͠ͱ
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ҋʹࢸΔܦҢ
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Ή͔͠Ή͔͠ɺ iOS ΞϓϦ Objective-C ͱ͍͏ݴޠͰ ॻ͘͜ͱ͕ඪ४Ͱͨ͠
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ಥવͷͷܒࣔ
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Swift ͱ͍͏ݴޠΛ࡞ͬͨΑ ࠓޙ͜ΕΛਪ͍ͯ͘͠Α
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༷ͷ࣊͝൵
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(ͨͩ͠ɺ੍ݶ͋Γ) Objective-C ͱ Swift ૬ޓʹݺͼग़͢͜ͱ͕Ͱ͖·͢ Ὃ طଘͷίʔυͦͷ··༻Մೳ
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͔ͯ͘͠ɺ iOS ΞϓϦ Objective-C ͱ Swift ͷ ࠞࡏ͢ΔੈքͱͳΓ·ͨ͠
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৽͘͠ॻ͘෦ Swift2 ʹ͠Α͏ ͱ͍͏ྲྀΕ
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طଘͷίʔυ Swift2 ʹஔ͖͑Α͏ͱ͍͏ಈ͖
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ฏ͕๚Ε…
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Swift3 ϦϦʔε ഁյతΞοϓσʔτ
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Xcode8.2 (࣍ͷόʔδϣϯ) Λ ࠷ޙʹ Swift2 ͷαϙʔτΛΔΑ
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Swift3 ͷҠߦۙʑඞਢʹ
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ͱ͍͑ɺ3 ͘Β͍ͰऴΘΔͰ͠ΐʁ Conversion πʔϧ͋Δ͠…
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Θͨ͋ΊͷΑ͏ʹ͍ߟ͑Ͱͨ͠
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Error 0 200 400 600 800 1 2 3 4 5 6 7 8 9 Τϥʔ (ୀࣾ࣌)
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Կ͕͋ͬͨͷ͔ • ҰʹΤϥʔΛݕग़Ͱ͖ͳ͍ • ίϯόʔδϣϯπʔϧ͕·ͱʹಈ͔ͳ͍ • Swift ͱ Objective-C ͷ࿈ܞͷมߋ༝དྷͰɺةݥͳ ෦͕͋Δ • ϥΠϒϥϦ෦ͷมߋશͯࣗͰ • ϥϯλΠϜΤϥʔɺҙਤ͠ͳ͍ڍಈͷରԠ
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Կ͕͋ͬͨͷ͔ • ҰʹΤϥʔΛݕग़Ͱ͖ͳ͍ • ίϯόʔδϣϯπʔϧ͕·ͱʹಈ͔ͳ͍ • Swift ͱ Objective-C ͷ࿈ܞͷมߋ༝དྷͰɺةݥͳ ෦͕͋Δ • ϥΠϒϥϦ෦ͷมߋશͯࣗͰ • ϥϯλΠϜΤϥʔɺҙਤ͠ͳ͍ڍಈͷରԠ
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Error 0 200 400 600 800 1 2 3 4 5 6 7 8 9 Τϥʔ (ୀࣾ࣌)
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ҋΛΓӽ͑ΔͨΊʹ
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Swift2 ͷ͏͔ͪΒରࡦ͢Δ
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Swift2 Ͱॻ͍͍ͯΔਓ • Swift ίʔσΟϯάΨΠυϥΠϯʹଇͬͯॻ͍͓ͯ ͖·͠ΐ͏ • Objective-C ͱͷ࿈ܞͰ IUO ΛΘͣ Optional Ͱ ѻ͏Α͏ʹ͠·͠ΐ͏ (nullability ΞϊςʔγϣϯΛࢦఆ͍ͯ͠ͳ͍߹) • RxSwift ͷഇࢭ༧ఆͷϝιου (`onNext` ) ΛΘ ͳ͍Α͏ʹ͠·͠ΐ͏
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ॻ͖·ͨ͠ʂ٩( 'ω' )و ࠓɺSwift2 Ͱॻ͍͍ͯΔಉ๔ୡɻ࠷ݶͬ ͓͖͍ͯͨɺSwift2 ͷ··Ͱ࢝ΊΔ Swift3 ରࡦ
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Swift3 Ҡߦ్தͷਓ ಉࢤΑɺ͕Μͬͯ
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Swift3 ίϯύΠϧΤϥʔղܾͷ ޙஊ
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ϥϯλΠϜΤϥʔ • NSURL ͱ URL • Objective-C ͷδΣωϦοΫܕʹ Swift ͔ΒΞΫηε (Swift2 Ͱେৎͩͬͨ…) • Objective-C Realm ࢮ͢ (ݹ͍όʔδϣϯͩͬͨͷཁҼ) • ϚΠάϨʔγϣϯπʔϧ͕ͱΓ͋͑ͣ `!` ͚ͭͯͨ
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༧ظͤ͵ڍಈ • protocol ͷϝιου໊ͷม࿙Ε (optional ࢦఆ default ࣮͍ͯ͠Δϝιουͩͱ ؾ͕͖ͭʹ͍͘) • ϚΠάϨʔγϣϯπʔϧ͕ྑ͘ͳ͍Ωϟετͯ͠Δ
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·ͱΊ
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• ༧Ҏ্ʹ Swift3 ରԠʹ͕͔͔࣌ؒΔ • Swift2 ͷ͏͔ͪΒ Swift3 Λҙࣝͯ͠ॻ͍͓ͯ͘ͱָ • ίϯύΠϧΤϥʔղܾͷ͋ͱɺ৽ͨͳઓ͍͕࢝·Δ
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͝ਗ਼ௌ͋Γ͕ͱ͏͍͟͝·ͨ͠