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Swiftへの愛2018
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hirothings
December 08, 2018
Programming
3.4k
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Swiftへの愛2018
Swiftの魅力
最近のSwift
これからのSwift
について発表した資料になります
hirothings
December 08, 2018
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Transcript
Love Swift 2018 @hirothings
10Ͱ͢͜ͱ • Swiftͱʁ • Swiftͷັྗ • ࠷ۙͷSwift • ͜Ε͔ΒͷSwift •
Hello Swift!
ࣗݾհ • @hirothings (Objective-ͻΖC) • ݩϥʔϝϯళ • ৭ʑ͋ͬͯݱࡏiOSσϕϩούʔ
Swiftͱͷग़ձ͍ • ΤϯδχΞͱͯ͠ΩϟϦΞΛελʔτͨ͠2015 ౙ..ɻ • ͦΕ·ͰJS, PHPΛগʑ͚ͩͬͨͲઓྗʹͳΒͣɺ Ҋ݅ͷSwiftࢼͯ͠ΈΔ୲ʹͳΓSwiftͱग़ձ͏͜ ͱʹ
Swiftͱ • Apple͕2014ʹൃදͨ͠ϓϩάϥϛϯάݴޠ • ͷͪΦʔϓϯιʔεԽ https://github.com/apple/swift • ࣮ߦ͕͍, Ϟμϯ, ҆શ
• ΞΠίϯΞϚπόϝ https://www.apple.com/jp/swift/ ΑΓ
Swiftͷັྗ • ݫ֨ͳܕγεςϜ • Ϟμϯͳจ๏ • null҆શͳݴޠ • ܕத৺ͷݴޠ •
GenericsΛ༻͍ͨॊೈ͞
ݫ֨ͳܕγεςϜ • ੩తܕ͚ݴޠ • ίϯύΠϥ͕ίʔυͷ҆શੑΛ୲อͯ͘͠ΕΔ • ҉తͳίʔυ͕গͳ͘ͳΔ • ܕʹରͯ͠ݫࣗ͘͠વͱλΠϓηʔϑͳॻ͖ํ Λʹ͚ͭΒΕΔ
Ϟμϯͳจ๏ • ܕਪ • Ϋϩʔδϟ • ߴ֊ؔ (map, flatMap, filter,
reduce..) • ϓϩτίϧ / ϓϩτίϧ֦ு • δΣωϦΫε • λϓϧ / ෳͷΓ • ϝϞϦͷࣗಈཧ(ARC)
null҆શͳݴޠ null҆શͱ: null͕ݪҼͰ࣮ߦ࣌ΤϥʔʹͳΒͳ͍Έ OVMM҆શͰͳ͍ݴޠɺϨΨγʔݴޠͩIUUQTRJJUBDPNLPIFSJUFNT FCECBCΑΓ
null҆શͳݴޠ • nullνΣοΫΛίϯύΠϧ࣌ʹνΣοΫͰ͖Δ • मਖ਼͠ͳ͍ͱͦͦϏϧυ͕௨Βͳ͍
ܕத৺ͷݴޠ ࢀরܕͷ • ίʔυΛΘͳ͍ͱɺͲ͜·ͰΠϯελϯε͕ ڞ༗͞Ε͍ͯΔͷ͔ෆ໌ +BWBTDSJQUͷ"SSBZ ࢀরܕ ͷྫ
ඪ४ϥΠϒϥϦͷ΄ͱΜͲ͕ ܕ • String • Array • Dictionary • Bool
• Int • Double • Float
ίϐʔ͝ͱʹίετ͕͔͔Δ ͷͰʁ
Copy on Write • ೖ࣌Ͱίϐʔ͕ൃੜ͠ͳ͍ • Λมߋ࣌ɺॳΊͯΠϯελϯε͕࡞ΒΕΔ Έ • ͜ͷΈͷ͓͔͛ͰArrayͳͲͰܕΛ࣮ݱ
GenericsΛ༻͍ͨॊೈ͞ • 2ͭͷҾΛswap͢Δؔ • IntܕͷҾͷΈαϙʔτ • ৼΔ͍ಉ͕ͩ͡ɺ͋ΒΏΔܕΛαϙʔτͨ͠ ͍..
• GenericsͰղܾ • ܕύϥϝʔλ <T> • ؔ, δΣωϦοΫܕ(Class, Struct)ɺ͋ΒΏΔ ໘Ͱ͑Δ
IUUQTEPDTTXJGUPSHTXJGUCPPL-BOHVBHF(VJEF(FOFSJDTIUNM
࠷ۙͷSwift • όʔδϣϯΞοϓ͕ΊΜͲ͏ʁ • Φʔϓϯιʔεͱͯ͠ͷػೳڧԽ
• Swift2 to 3ͷΑ͏ͳࠈͳ͍ • Swift3ͰObj-CʹҾͬுΒΕ༷ͨΛόοαϦͬͯ҆ఆ͖ͯͨ͠ • Swift4.1 to 4.2ͷMigration࣌ؒͰऴΘͬͨɻ
• XcodeͷMigrationػೳ + ͪΐͬͱͨ͠मਖ਼ͰDone • Ξοϓσʔτͷ͍ϥΠϒϥϦSwift3ͰίϯύΠϧ όʔδϣϯΞοϓ͕ΊΜͲ͏ʁ
• จࣈྻͷڧԽ • StringͷCollection TypeԽ • ෳߦจࣈྻϦςϥϧͷαϙʔτ • Randomؔͷ࣮ •
ࠓ·ͰCͷؔarc4random_uniform Λ͍͕ͬͯͨɺLinuxڥͰ αϙʔτ͞Εͯͳ͍ͨΊ໘ͩͬͨ • Dynamic Member Lookup Φʔϓϯιʔεͱͯ͠ͷػೳڧԽ
͜Ε͔ΒͷSwift • ABI҆ఆԽ • async / await
ABI҆ఆԽ • (ͣͬͱ༏ઌ՝͚ͩͲ)Swift5ͷϦϦʔεཁ݅ • ෳͷSwiftόʔδϣϯͷڞଘ • ҠߦͷπϥϛݮΔ • ϥΠϒϥϦ੍࡞ऀخ͍͠ •
ݱࡏϞδϡʔϧ୯ҐͰSwift3 or 4Λࢦఆͯࠞ͠ࡏͤ͞ Δ͜ͱՄೳ
async / await • ඇಉظॲཧΛಉظॲཧతʹॻ͚Δ • ࠓ·ͰRxSwiftͳͲؔܕϓϩάϥϛϯάͷΞϓϩʔν ΛಋೖͤͶͳΒͣ؆୯Ͱͳ͔ͬͨ • ࣮࣌ظ·ͩະ֬ఆ
• KotlinͰ͢ͰʹίϧʔνϯಋೖࡁΈ • SwiftͷੜΈͷΫϦεϥτφʔ͕proposalग़ͨ͠
Before async / await
After (Proposalͷྫ) async / await
Hello! Swift
Swift Playgrounds • iPadͰήʔϜײ֮ͰSwiftΛ৮ΕΔެࣜΞϓϦ IUUQTXXXBQQMFDPNKQTXJGUQMBZHSPVOET
Playground • ϦΞϧλΠϜͰ࣮ߦ͞ΕΔΤσΟλ • ཁXcode
Server Side Swift • UIKitʹڵຯͳ͍ํʹΦεεϝ • Ϗϧυ͍͠ɺ؆୯ͳAPIͳΒϗεςΟϯά·Ͱ Ͱ͖ΔϑϨʔϜϫʔΫ(ݸਓΞϓϦͷAPISSSͰ࣮ͯ͠·͢)
One more things..
࠷ۙͷXcodeʹ͍ͭͯ
ෳγϛϡϨʔλΛͬͨฒྻςετ
Diffʹ৭͕ͭ͘Α͏ʹͳͬͨ!!
Xcode10Ͱ͍ͭʹϚϧνΧʔιϧରԠ!!
Fin