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RxSwift勉強会
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Yusuke Hosonuma
May 31, 2016
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RxSwift勉強会
Yusuke Hosonuma
May 31, 2016
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Transcript
RxSwiftษڧձ ͦͷ0
ࣗݾհ • Yusuke Hosonuma • ݴޠJavaɺObjective-CɺSwiftɺଞ৭ʑ • ʢ࠷ۙͷʣ࠲ӈͷɿ ͝จ10ؒอकՄೳͳίʔυͰ͔͢ʁ •
QiitaͰ1,000͑ͨΑʂ
RxSwift ʢ͋ʔΔ͍͑ͬ͘͢͢;ͱʣ
͊͞RxSwiftॻͧ͘ʂ
None
ʁ
None
ʂʁ
None
ͦΜͳ͜ͱʹ ͳΒͳ͍Α͏ʹ
·ͣ
ϦΞΫςΟϒ ϓϩάϥϛϯάͷ
ߟ͑ํ͔Βֶ΅͏ʂ
ࠓͷຊ
ϦΞΫςΟϒϓϩάϥ ϛϯάͱԿ͔ʁ
ඇಉظσʔλετϦʔϜ Λ༻͍Δϓϩάϥϛϯά
ඇಉظσʔλετϦʔϜͷྫ • I/OΠϕϯτ • ΫϦοΫΠϕϯτ • λονΠϕϯτ • etc…
͑ɺͦΕͷ Ͳ͕͜৽͍͠ͷʁ
ϦΞΫςΟϒϓϩάϥ ϛϯάͰ
ຆͲͯ͢Λ ετϦʔϜͰߟ͑Δ
ԿͰετϦʔϜ • ม • Ϣʔβೖྗ • ϓϩύςΟ • σʔλߏ •
etc…
ͱ͜ΖͰ ετϦʔϜͬͯԿʁ
ҰݴͰ͍͏ͳΒ
Կ͔͕ྲྀΕͯ͘Δ ʮʯ
౧͕ྲྀΕͯ͘ΔσʔλετϦʔϜʢʣ
ετϦʔϜ ͍ΖΜͳૢ࡞͕ग़དྷΔ
ετϦʔϜͷૢ࡞ • ࡞ ⾣ ৽ͨͳΛ࡞ΕΔ • ߹ʢmergeʣ ⾣ Λ߹ྲྀͯ͠Ұͭʹ͢Δ͜ͱ͕ग़དྷΔ •
มʢfilterɺmapɺflatMapʣ ⾣ ແࢹͨ͠Γɺ౧ଠʹม͑ͨΓʢڧҾʁʣ
ετϦʔϜͷ ՄೳੑΛߟ͑Δ
ͦͷલʹ RxSwiftʹ͍ͭͯগ͠
ུྺ • ReactiveX (Rx) ϑΝϛϦʔͷҰһ • Rxࣗମ.NETൃʢ࣮ރΕٕͨज़ʣ • ڝ߹ʮReactiveCocoaʯʮSwiftBondʯͱ͔
ֶͿϞνϕʔγϣϯ • ঢ়ଶมΛݮΒͤΔ • ෳࡶͳॲཧΛγϯϓϧʹهड़Ͱ͖Δ • ॲཧΛએݴతʹهड़Ͱ͖Δ ʢؔܕͷӨڹڧ͘ड͚ͯΔʣ • ͏ͪͷϓϩδΣΫτͰਖ਼ࣜ࠾༻ʢϐϯνͩΑʂʣ
ؓٳ
ετϦʔϜ
࣌ؒॱʹฒΜͩ ਐߦதͷΠϕϯτͷྻ
None
ҎԼͷ3छྨ͕ྲྀΕͯ͘Δ • ʢԿΒ͔ͷܕʣ • Τϥʔ • ྃ • ʹ͔͠ڵຯͳ͍ͱ͖ɺ Լ2ͭແࢹ͢Δ͜ͱ
͜ͷʢʹʣ ྲྀΕͯ͘ΔͷΛ
ࢹʢlistenʣ͢Δ
ϦΞΫςΟϒ༻ޠͩͱ subscribingʢߪಡʣ
·͊ͭ·Γ
Ͱચ୕͠ͳ͕Β ౧ΛͬͯΔ͓͋ͪΌΜ
μϒϧΫϦοΫͷ ετϦʔϜʹ͍ͭͯߟ͑Δ
ී௨ʹ࣮͢Δͱʁ
μϒϧΫϦοΫͷ࣮ • ΫϦοΫͨ͠λΠϛϯάΛ͓֮͑ͯ͘ม • ִ࣌ؒؒΛௐΔ • τϦϓϧΫϦοΫݕ͠ͳ͍Α͏ʹ • ؆୯ʹͰ͖ͦ͏͚ͩͲΘΓͱ໘ͦ͏
ετϦʔϜͰߟ͑Δͱʁ
250msͷִ͕ؒແ͍࣌ؒͰ ΠϕϯτΛ·ͱΊΔ
Πϕϯτͷ·ͱ·ΓΛ ݸʹม͢Δ
ݸ͕2ͷ͚ͭͩΛ ϑΟϧλʔ͢Δ
ΫϦοΫͷ ετϦʔϜ͔Β
μϒϧΫϦοΫͷ ετϦʔϜ͕ग़དྷͨʂʁ
ετϦʔϜͷՄೳੑ͕ ݟ͖͑ͯ·ͤΜ͔ʁ
͕͖ͳͷϦΞΫςΟϒϓϩάϥϛϯά͚ͩ͞ʂ ໋ྩܗϓϩάϥϛϯάͳΜͯΫιήʔͩʂ
ͦΖͦΖऴΘΓͰ͕͢
͜Ε͔ΒͷཱྀͷಓඪΛ
ಓඪ • ʲ༁ʳ͋ͳ͕ͨٻΊ͍ͯͨϦΞΫςΟϒϓϩά ϥϛϯάೖ http://ninjinkun.hatenablog.com/entry/introrxja • RxSwift: ReactiveX for Swift
https://github.com/tid-kijyun/RxSwift/blob/ translates-into-japanese/README-ja.md • ໎͍ͬͨ࣌ͭͰʮʯΛࢥ͍ग़͢͜ͱ
ͪͳΈʹ෦తʹ
Observerύλʔϯ͕ ΘΕ͍ͯ·͢
͘͜͠ײ͡Δ༻ޠ ͦͷ͋ͨΓ͔Βདྷ͍ͯ·͢
Observer༻ޠ • Subject • Observable • Observer • Subscribe
·ͱΊ
ࠓͷ·ͱΊ • ϦΞΫςΟϒϓϩάϥϛϯάʮඇಉظσʔλ ετϦʔϜʯΛ༻͍Δϓϩάϥϛϯά • ετϦʔϜԿ͔ΒͰ࡞ΕΔɻ • ετϦʔϜ͍ΖΜͳૢ࡞ʢ߹ɾϑΟϧλɾม ʣ͕Ͱ͖Δɻ •
ͯ͢ετϦʔϜͰ͋Δɻ
Thanks.