よせあつめSwift - Swift5.9

Αͤ͋ͭΊ4XJGU 4XJGU ೳొཁ !OPUPSPJE J1IPOFΞϓϦ։ൃऀ೥݄೔

࿩͢಺༰ w 4XJGUͷ৽ػೳ w 4XJGU.BDSP͸৽ػೳ w 0CTFSWBUJPOGSBNFXPSL

࿩͞ͳ͍಺༰ w ฒߦੑ $PODVSSFODZ ͷػೳڧԽ w 5BTL(SPVQͷछྨ௥Ճ ݁ՌΛอ࣋͠ͳ͍άϧʔϓԽ͞ΕͨλεΫ w
λεΫͷ༏ઌ౓্֨͛ػೳ w λεΫ಺ͷ؀ڥม਺ڞ༗ػೳ w ฒߦੑ࣌ͷಈ࡞τϨʔε

͓୊໨ w վળ͢͢Ή4XJGUݴޠ w ৽ػೳᶃʙᶅ w ৽ػೳ 4XJGUNBDSPT w 0CTFSWBUJPOͷαϯϓϧ
w ·ͱΊ

վળ͢͢Ή4XJGUݴޠ

88%$ऴΘΓ·ͨ͠Ͷ

ڈ೥͸4XJGUͷ଍ Ի͕ฉ͍͑ͯͨ͜͸ ͕ͣͩʜ IUUQTEFWFMPQFSBQQMFDPN XXED

4XJGUݴޠ͸ΑΓ͔͸ ৽ػೳ௥Ճ͸௿ௐ

8IBU`TOFXJO4XJGU88%$ IUUQTEFWFMPQFSBQQMFDPNXXED

8IBU`TOFXJO4XJGU88%$ IUUQTEFWFMPQFSBQQMFDPNXXED ϓϩδΣΫτશମͷऔΓ૊Έ ৽ػೳᶃJGFMTF TXJUDIΛࣜͱͯ͠࢖༻Մೳʹ ৽ػೳᶄܕύϥϝʔλʔͷύοέʔδରԠ 4XJGUͷੑೳ໘޲্ͷ࿩ ৽ػೳ 4XJGU"UUSJCVUFT͕ఏڙ͍ͯͨ͠ػೳΛϓ ϥάΠϯͱͯ͠ར༻Մೳʹ
ੑೳ໘޲্ͨ͠4XJGUΛ࢖ͬͯϑϨʔϜϫʔΫΛ࡮৽த ৽ػೳᶅDMBTTͰͰ͖Δ͜ͱΛTUSVDUʹ೚͍ͤͨ ৽ػೳᶇฒߦੑͷॊೈੑΛڧԽ ˢͷ࠾༻ྫ ৽ػೳᶆ$ ޲͚ͷίʔυδΣωϨʔλʔ

8IBU`TOFXJO4XJGU88%$ IUUQTEFWFMPQFSBQQMFDPNXXED ৽ػೳᶃJGFMTF TXJUDIΛࣜͱͯ͠࢖༻Մೳʹ ৽ػೳᶄܕύϥϝʔλʔͷύοέʔδରԠ ৽ػೳ 4XJGU"UUSJCVUFT͕ఏڙ͍ͯͨ͠ػೳΛϓ ϥάΠϯͱͯ͠ར༻Մೳʹ ৽ػೳᶅDMBTTͰͰ͖Δ͜ͱΛTUSVDUʹ೚͍ͤͨ ৽ػೳᶇฒߦੑͷॊೈੑΛڧԽ
৽ػೳᶆ$ ޲͚ͷίʔυδΣωϨʔλʔ

8IBU`TOFXJO4XJGU88%$ IUUQTEFWFMPQFSBQQMFDPNXXED ৽ػೳᶃJGFMTF TXJUDIΛࣜͱͯ͠࢖༻Մೳʹ ৽ػೳᶄܕύϥϝʔλʔͷύοέʔδରԠ ৽ػೳ 4XJGU"UUSJCVUFT͕ఏڙ͍ͯͨ͠ػೳΛϓ ϥάΠϯͱͯ͠ར༻Մೳʹ ৽ػೳᶅDMBTTͰͰ͖Δ͜ͱΛTUSVDUʹ೚͍ͤͨ ৽ػೳᶇฒߦੑͷॊೈੑΛڧԽ
৽ػೳᶆ$ ޲͚ͷίʔυδΣωϨʔλʔ ৽ػೳʙ ЋΛͬ͘͟Γઆ໌͍ͨ͠ɻ

৽ػೳᶃ JGFMTF TXJUDIΛࣜͱͯ͠࢖༻Մೳʹ

6TJOHJGFMTFBOETXJUDITUBUFNFOUTBTFYQSFTTJPOT JGFMTFTXJUDIεςʔτϝϯτΛࣜͱͯ͠ѻ͏͜ͱ͕Ͱ͖Δ enum Status: CaseIterable { case sleep case active
case playingGame var description: String { switch self { case .active: return "ΞΫςΟϒ" case .sleep: return "ਭ຾" case .playingGame: return "ήʔϜத" } } } ྫFOVN4UBUVTʹઆ໌Λ෇Ճ͢ΔEFTDSJQUJPOଐੑΛ௥Ճ͢Δɻ

case playingGame var description: String { return switch self { case .active: return "ΞΫςΟϒ" case .sleep: return "ਭ຾" case .playingGame: return "ήʔϜத" } } } ྫFOVN4UBUVTʹઆ໌Λ෇Ճ͢ΔEFTDSJQUJPOଐੑΛ௥Ճ͢Δɻ

case playingGame var description: String { switch self { case .active: "ΞΫςΟϒ" case .sleep: "ਭ຾" case .playingGame:"ήʔϜத" } } } ྫFOVN4UBUVTʹઆ໌Λ෇Ճ͢ΔEFTDSJQUJPOଐੑΛ௥Ճ͢Δɻ 4XJUDIจ͕จࣈྻΛฦࣜ͢ͱͯ͠ػೳ ͢Δؔ਺಺ʹ͔͕ͭࣜ͠ͳ͍ͷͰ SFUVSO΋লུͰ͖Δɻ

৽ػೳᶄ ܕύϥϝʔλʔͷύοέʔδରԠ

UZQFQBSBNFUFSQBDLT ܕύϥϝʔλʔͷύοέʔδରԠ wͦ΋ͦ΋4XJGUͷHFOFSJD͸ΞΠσΞͱ࣮ࡍͷܕΛ෼཭͢Δख๏ wෳ਺ͷܕΛҾ਺ͱͯ͠ΞΠσΞड͚औΔʹ͸Ҿ਺෼ͷఆ͕ٛඞཁͩͬͨ wෳ਺ͷܕΛ࣋ͭҾ਺ΛύοέʔδԽ͢Δ৽͍͠ఆ͕ٛొ৔ wFBDIͱSFQFBUΛ࢖༻ͯ͠ܕύϥϝʔλఆٛΛ࣮ࡍͷ஋औΓग़͠Λ࣮ݱ FBDI3FTVMU

ܕύϥϝʔλʔͷύοέʔδରԠᶃ func query<Payload>( _ item: Request<Payload> ) -> Payload func
query<Payload1, Payload2>( _ item1: Request<Payload1>, _ item2: Request<Payload2> ) -> (Payload1, Payload2) func query<Payload1, Payload2, Payload3>( _ item1: Request<Payload1>, _ item2: Request<Payload2>, _ item3: Request<Payload3> ) -> (Payload1, Payload2, Payload3) func query<Payload1, Payload2, Payload3, Payload4>( _ item1: Request<Payload1>, _ item2: Request<Payload2>, _ item3: Request<Payload3>, _ item4: Request<Payload4> ) -> (Payload1, Payload2, Payload3, Payload4)

func query<Payload>( _ item: Request<Payload> ) -> Payload func query<Payload1,
Payload2>( _ item1: Request<Payload1>, _ item2: Request<Payload2> ) -> (Payload1, Payload2) func query<Payload1, Payload2, Payload3>( _ item1: Request<Payload1>, _ item2: Request<Payload2>, _ item3: Request<Payload3> ) -> (Payload1, Payload2, Payload3) func query<Payload1, Payload2, Payload3, Payload4>( _ item1: Request<Payload1>, _ item2: Request<Payload2>, _ item3: Request<Payload3>, _ item4: Request<Payload4> ) -> (Payload1, Payload2, Payload3, Payload4) func query<each Payload>(_ item: repeat Request<each Payload>) -> (repeat each Payload) ύϥϝʔλ਺Λ૿΍ͨ͠ಉؔ͡਺ఆ͕ٛඞཁͩͬͨ ΋ͷ͕ͭͷύϥϝʔλʔͱͯ͠ѻ͏͜ͱ͕Մೳʹ ܕύϥϝʔλʔͷύοέʔδରԠᶄ

w UZQFQBSBNFUFSQBDLT͸ύϥϝʔλʔͷܕΛอͬͨ··ͳͷͰؔ਺ͷ໭Γ஋ ΁ɺܕͦͷ΋ͷɺܕʹؔ࿈͢ΔܕΛฦ͢͜ͱ͕Ͱ͖Δɻ ܕύϥϝʔλʔͷύοέʔδରԠᶅ w౉ͨ͠ύϥϝʔλʔΛ౉ͨ͠ύϥϝʔλʔ਺෼ͷλϓϧΛ ฦ͢͜ͱ͕Մೳɻ w໭Γ஋ʹύϥϝʔλͰ౉͞ΕͨܕΛ࢖Θͳ͍ͷͰ͋Ε͹ಛ ʹܕύϥϝʔλʔΛ࢖͏ඞཁ͕ͳ͍ɻ

ܕύϥϝʔλʔͷύοέʔδରԠᶆ protocol Animal { associatedtype Food: AnimalFeed associatedtype Commodity: AnimalCommodity
func eat(_ food: Food) func produce() -> Commodity } struct Chicken: Animal { typealias Food = Grain typealias Commodity = ChickenMeat func eat(_ food: Grain) { // do something eat... } func produce() -> ChickenMeat { return ChickenMeat() } } ܕͱ͍ͬͯ΋HFOFSJDTɺQSPUPDPMͱBTTPDJBUFEUZQFΛ ૊Έ߹ΘͤΔͱม׵Ͱ͖ΔܕͷόϦΤʔγϣϯ͸૿͑Δ

w UZQFQBSBNFUFSQBDLT͸ύϥϝʔλʔͷܕΛอͬͨ··ͳͷͰؔ਺ͷ໭Γ஋ ͳͲʹύϥϝʔλʔͷܕΛ൓өͨ͠ܕΛ໭Γ஋ʹ൓өͰ͖Δ w ܕύϥϝʔλʔͷύοέʔδରԠ͸4XJGU6*ʹ࢖ΘΕͦ͏ͳงғؾΛ͍ͩͯ͠ Δ͕ͦΜͳ͜ͱ͸ͳ͔ͬͨ ܕύϥϝʔλʔͷύοέʔδରԠᶇ

৽ػೳᶅ 0XOFSTIJQ

0XOFSTIJQ ߏ଄ମͰ΋Ϋϥεͷ୅ΘΓΛ͍ͨ͠ɻ DMBTTͷར఺͸ΦϒδΣΫτͷղ์λΠϛϯάͰEFJOJU ͕ݺͼग़͞Ε ΔɻEFJOJU ͷಛੑΛར༻ͯ͠ΦϒδΣΫτϋϯυϧ IBOEMF Λղ์͢ Δ࢓૊ΈΛ࡞͍ͬͯΔɻ TUSVDUͰ΋޻෉
ࡉ޻ ͢Ε͹DMBTTΛ࢖Θͳͯ͘΋ ࣮ݱͰ͖Δ͔΋ʜ

0XOFSTIJQ ߏ଄ମͰ΋Ϋϥεͷ୅ΘΓΛ͍ͨ͠ɻ struct FileDescriptor: ~Copyable { private var fd: CInt
init(descriptor: CInt) { self.fd = descriptor } func write(buffer: [UInt8]) throws { let written = buffer.withUnsafeBufferPointer { Darwin.write(fd, $0.baseAddress, $0.count) } // ... } consuming func close() { Darwin.close(fd) } deinit { Darwin.close(fd) } }

0XOFSTIJQ ߏ଄ମͰ΋Ϋϥεͷ୅ΘΓΛ͍ͨ͠ɻ struct FileDescriptor: ~Copyable { private var fd: CInt
init(descriptor: CInt) { self.fd = descriptor } func write(buffer: [UInt8]) throws { let written = buffer.withUnsafeBufferPointer { Darwin.write(fd, $0.baseAddress, $0.count) } // ... } consuming func close() { Darwin.close(fd) } deinit { Darwin.close(fd) } } ίϐʔͰ͖ΔΛ൱ఆ͢Δϓϩτίϧ໊͕ڧҾ DPOTVNJOHΛ͚ͭΔͱଞͷؔ਺ΑΓ΋࠷ޙʹݺͼग़ ͞ΕΔ͔ΛίϯύΠϧϕʔεͰνΣοΫ

৽ػೳ 4XJGUNBDSPT

4XJGUNBDSPTᶃ 4XJGU"UUSJCVUFTͰ"QQMF͕΍͖ͬͯͨ͜ͱΛ9DPEFͷϓϥάΠϯԽ w 1BDLBHFͰఏڙ͞ΕΔϓϥάΠϯ MPDBM͔ΒऔΓࠐΈɺDPMMFDUJPO͔Βऔಘ w Ͱ࢝·Δ'SFFTUBOEJOHNBDSPT w !Ͱ࢝·ΔBUUBDIFENBDSPT
w !Ͱ࢝·ΔͷͰ4XJGU"UUSJCVUFTΛ4XJGUNBDSPTͱݟ෼͚͕͔ͭͳ͍ w NBDSPΛॻ͘ͱ4XJGUݴޠͷղੳ໦Λ౉͞ΕΔͷͰɺผͷιʔείʔυ จࣈ ྻ ΁ͱม׵͢Δ࢓༷

4XJGUNBDSPTᶄ 4XJGUNBDSPT޲͚ͷ4XJGU"UUSJCVUFT w એݴଐੑ %FDMBSBUJPO"UUSJCVUFT ͷҰ෦ w BUUBDIFE w 1FFSNBDSPTɺ.FNCFSNBDSPɺ.FNCFSBUUSJCVUFɺ"DDFTTPS
NBDSPTɺ$POGPSNBODFNBDSPTɺ w GSFFTUBOEJOH !Ͱ࢝·Δ4XJGU.BDSPΛ࡞Ζ͏ͱ͢Δͱ!Ͱ࢝· Δ4XJGU"UUSJCVUFTΛ࢖͏͜ͱʹͳΔ

4XJGUNBDSPTᶅ 4XJGUNBDSPTͷ༻్ w ϑϨʔϜϫʔΫಠࣗͷػೳΛ૊ΈࠐΉࡍͷఆܕจ ϘΠϥϓϨʔτίʔυ هड़Λ 4XJGUNBDSPTͰஔ͖׵͑Δ͜ͱ͕Մೳ w "QQMFۘ੡ͷϑϨʔϜϫʔΫ΋࠾༻ w
4XJGU%BUB w 0CTFSWBUJPOGSBNFXPSL w ιϑτ΢ΣΞΞʔΩςΫνϟ΁ద߹ͤ͞ΔͨΊͷϚΫϩ w ରԠͦ͠͏ͳΞʔΩςΫνϟ 7*1&3ɺ3FEVYͱ͔

4XJGUNBDSPTᶆ 4XJGUNBDSPTΛࢼ͢ w 9DPEF/FX1BDLBHF͔Β4XJGUNBDSPTΛબ୒Մೳ w σϑΥϧτͰTUSJOHJGZͷαϯϓϧؚ͕·ΕΔ w 9DPEFCFUBͰ͸MPDBM͔ΒऔΓࠐΈͰ͖ͳ͔ͬͨ

͔͜͜Β͸4XJGUNBDSPTʹ ࢥ͏ͱ͜Ζʜ

4XJGU४ඪ४ػೳΛ૊ΈࠐΉͨΊʹ4XJGU"UUSJCVUFTʹ৽ఆٛΛ௥Ճ͢Δ ͷ΋ݶ౓͕͋Δɻ ˡϑϨʔϜϫʔΫʹґଘ͢Δఆ͕ٛཉ͍͔͠ΒϚΫϩػೳΛఏڙ͠Α͏ɻ Έ͍ͨͳϊϦͳͷͰ͸ 4XJGUNBDSPTొ৔ͷഎܠΛߟ͑Δ IUUQTTQFBLFSEFDLDPNOPUPSPJEBQQMFHBZBSJUBJGBOHUJTXJGUBUUSJCVUFT ࢀߟ "QQMF͕ ΍Γ͍ͨ์୊4XJGU"UUSJCVUFT4QFBLFS%FDL

4XJGUNBDSPT͸ڧྗ͚ͩͲɺϑϨʔϜϫʔΫΛఏڙ ͢Δͱ͔ɺϚΫϩ༻1BDLBHFΛҡ࣋Ͱ͖Δ ମྗ͕͋ Δ ૊৫ ίϛϡχςΟɺاۀ ʹݶఆ͞ΕΔͷͰ͸ ϞόΠϧϓϥοτϑΥʔϜʹ͍ͭͯ͸͔ͭͯ΄Ͳͷ ։ൃऀ͕૿͑ΔΘ͚Ͱ͸ͳ͍ͷʹʜ 4XJGUNBDSPT΁ͷٙ໰

4XJGUNBDSPͷαϯϓϧ

0CTFSWBUJPOͷαϯϓϧίʔυ 4XJGUNBDSPΛ࢖༻ IUUQTHJUIVCDPNOPUPSPJE(BNF1MBZFS4UBUVT

0CTFSWBUJPOͷαϯϓϧ wIUUQTHJUIVCDPNOPUPSPJE (BNF1MBZFS4UBUVT wήʔϜϓϨΠϠʔͷঢ়ଶΛදࣔ มߋͰ͖Δ w1FSTPOΛ͜Ε·Ͱͷ࣮૷ɺ 0CTFSWBUJPOΛ࢖ͬͨ΋ͷΛࢼ͢ ͜ͱ͕Ͱ͖Δ w9DPEFͷΤσΟλͰϚΫϩల։͕ Մೳ
(BNF1MBZFS4UBUVT

0CTFSWBUJPOGSBNFXPSLͷϚΫϩͦͷ 0CTFSWBUJPOGSBNFXPSLͷϚΫϩͦͷ 0CTFSWBUJPOGSBNFXPSLͷଐੑ؂ࢹΦϒδΣΫτ

͜Ε·Ͱͷ4XJGU6*ͷ൥ࡶ͞͸ͳΜͩͬͨͷ͔ 0CTFSWBCMF0CKFDUɺ!0CTFSWFE0CKFDUɺ !4UBUF0CKFDUɺ!&OWJSPONFOU0CKFDU 0CTFSWBUJPOGSBNFXPSL

·ͱΊ w4XJGU͸ੑೳ޲্ɺ$ ͷޓ׵ੑ͕Ξϐʔϧ͞ΕΔ΋࠷৽ػೳ͸ গͳΊͰ͢ w4XJGU"UUSJCVUFTͷػೳΛϓϥάΠϯԽͨ͠Α͏ͳ4XJGUNBDSPT͕ొ ৔͠·ͨ͠ɻ w"QQMF͸4XJGUNBDSPTΛఏڙ࡞ΔͨΊʹ4XJGU"UUSJCVUFT΁৽͘͠ఆ ٛΛ௥Ճ͠·ͨ͠

ࢀߟ w 8IBU`TOFXJO4XJGU88%$7JEFPT "QQMF%FWFMPQFS w IUUQTEFWFMPQFSBQQMFDPNXXED w &YQBOEPO4XJGUNBDSPT88%$7JEFPT "QQMF%FWFMPQFS w
IUUQTEFWFMPQFSBQQMFDPNXXED w 8SJUF4XJGUNBDSPT88%$7JEFPT"QQMF %FWFMPQFS w IUUQTEFWFMPQFSBQQMFDPNXXED w .FFU4XJGU%BUB88%$7JEFPT"QQMF %FWFMPQFS w IUUQTEFWFMPQFSBQQMFDPNXXED w 8IBUTOFXJO4XJGUͷཁ໿ TXJGU@@@TVNNBSZ4QFBLFS%FDL w IUUQTTQFBLFSEFDLDPNVIPPJTXJGU TVNNBSZ w 4XJGUͰಋೖ͞ΕΔ"UUBDIFE.BDSPʹ͍ͭͯ 2JJUB w IUUQTRJJUBDPNGSPTUFE@CJSEJUFNT GCGD w 0CTFSWBUJPOc"QQMF%FWFMPQFS%PDVNFOUBUJPO w IUUQTEFWFMPQFSBQQMFDPN EPDVNFOUBUJPOPCTFSWBUJPO

よせあつめSwift - Swift5.9

よせあつめSwift - Swift5.9

More Decks by notoroid

Other Decks in Programming

Featured

Transcript