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KotlinΤϯδχΞ͕Swiftʹೖ໳ ͨ͠Βͪΐͬͱށ࿭ͬͨ࿩ 2017.8.9 Swift/Kotlin߹ಉษڧձ Fukui Atsuko

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About me • ෱Ҫರࢠ / Fukui Atsuko • @muumuumuumuu • Retty, Inc. • AndroidΤϯδχΞ • ͦͷલ͸૊ΈࠐΈܥAndroidͷ͓࢓ࣄ

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Kotlinྺ • 1೥൒લ͘Β͍͔ΒϓϩμΫτʹ౤ೖ IUUQFOHJOFFSSFUUZNFFOUSZSFUUZUPLPUMJO

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Swiftೖ໳͠·ͨ͠

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ײ૝

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֓ͶKotlinͱಉ͡ϊϦͰ͍͚Δ • ಛʹ͜ͷೋ͕ͭ͋Δͷ͕خ͍͠ • ֦ுؔ਺ • ஗ԆධՁ • lazy͕letʹ࢖͑Δͱ΋ͬͱྑ͔ͬͨ

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Ͱ΋ɺ ޷͖ʹͳΕͳ͍ͱ͜Ζ΋͋Δ

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޷͖ͳͳΕͳ͍ͱ͜Ζ • ωʔϜεϖʔε͕ͳ͍ʂʂ • (KotlinͰ͍͏) ఆ਺Λએݴ͢Δ࣌ʹͲ͏͢Δ ͷʁʁ

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ެࣜυΩϡϝϯτᐌ͘ ݴޠ ࠶୅ೖՄ ,FZXPSE %FTDSJQUJPO 4XJGU ࠶୅ೖෆՄ MFU :PVEFDMBSFDPOTUBOUTXJUI UIFMFULFZXPSE ࠶୅ೖՄೳ WBS BOEWBSJBCMFTXJUIUIFWBS LFZXPSE ,PUMJO ࠶୅ೖෆՄ WBM "TTJHOPODF SFBEPOMZ  MPDBMWBSJBCMF ࠶୅ೖՄೳ WBS .VUBCMFWBSJBCMF

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KotlinͰఆ਺ͬͯݴͬͨΒ͜ΕͰ͠ΐ • جຊతʹconstΛ͚ͭΔ • τοϓϨϕϧͰએݴ • Ϋϥεͷcompanion objectͷத

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Swiftͩͱʁ • τοϓϨϕϧͰએݴͰ͖Δ͕ɺ໊લͷিಥʹ ؾΛ͚ͭΔඞཁ͕͋Δ • ωʔϜεϖʔε͕ͳ͍ͷͭΒ͍ • Classͷ಄Ͱstatic let

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ఆ਺ͷهड़ͷ࢓ํ ݴޠ ه๏ ྫ 4XJGU -PXFS$BNFM $BTF UIJT*T4XJGU$POTUBOU ,PUMJO 4OBLF$BTF 5)*4@*4@,05-*/@$0/45"/5

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·ͱΊ • SwiftʹωʔϜεϖʔεཉ͍͠ • Swiftͷఆ਺ͷॻ͖ํʹ׳Εͳ͍ • Kotlin͸͔Θ͍͍

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͋Γ͕ͱ͏͍͟͝·ͨ͠ʂ