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RxSwiftษڧձ ͦͷ0
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ࣗݾհ • Yusuke Hosonuma • ݴޠJavaɺObjective-CɺSwiftɺଞ৭ʑ • ʢ࠷ۙͷʣ࠲ӈͷɿ ͝จ10ؒอकՄೳͳίʔυͰ͔͢ʁ • QiitaͰ1,000͑ͨΑʂ
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RxSwift ʢ͋ʔΔ͍͑ͬ͘͢͢;ͱʣ
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͊͞RxSwiftॻͧ͘ʂ
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ʁ
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ʂʁ
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ͦΜͳ͜ͱʹ ͳΒͳ͍Α͏ʹ
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·ͣ
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ϦΞΫςΟϒ ϓϩάϥϛϯάͷ
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ߟ͑ํ͔Βֶ΅͏ʂ
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ࠓͷຊ
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ϦΞΫςΟϒϓϩάϥ ϛϯάͱԿ͔ʁ
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ඇಉظσʔλετϦʔϜ Λ༻͍Δϓϩάϥϛϯά
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ඇಉظσʔλετϦʔϜͷྫ • I/OΠϕϯτ • ΫϦοΫΠϕϯτ • λονΠϕϯτ • etc…
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͑ɺͦΕͷ Ͳ͕͜৽͍͠ͷʁ
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ϦΞΫςΟϒϓϩάϥ ϛϯάͰ
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ຆͲͯ͢Λ ετϦʔϜͰߟ͑Δ
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ԿͰετϦʔϜ • ม • Ϣʔβೖྗ • ϓϩύςΟ • σʔλߏ • etc…
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ͱ͜ΖͰ ετϦʔϜͬͯԿʁ
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ҰݴͰ͍͏ͳΒ
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Կ͔͕ྲྀΕͯ͘Δ ʮʯ
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౧͕ྲྀΕͯ͘ΔσʔλετϦʔϜʢʣ
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ετϦʔϜ ͍ΖΜͳૢ࡞͕ग़དྷΔ
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ετϦʔϜͷૢ࡞ • ࡞ ⾣ ৽ͨͳΛ࡞ΕΔ • ߹ʢmergeʣ ⾣ Λ߹ྲྀͯ͠Ұͭʹ͢Δ͜ͱ͕ग़དྷΔ • มʢfilterɺmapɺflatMapʣ ⾣ ແࢹͨ͠Γɺ౧ଠʹม͑ͨΓʢڧҾʁʣ
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ετϦʔϜͷ ՄೳੑΛߟ͑Δ
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ͦͷલʹ RxSwiftʹ͍ͭͯগ͠
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ུྺ • ReactiveX (Rx) ϑΝϛϦʔͷҰһ • Rxࣗମ.NETൃʢ࣮ރΕٕͨज़ʣ • ڝ߹ʮReactiveCocoaʯʮSwiftBondʯͱ͔
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ֶͿϞνϕʔγϣϯ • ঢ়ଶมΛݮΒͤΔ • ෳࡶͳॲཧΛγϯϓϧʹهड़Ͱ͖Δ • ॲཧΛએݴతʹهड़Ͱ͖Δ ʢؔܕͷӨڹڧ͘ड͚ͯΔʣ • ͏ͪͷϓϩδΣΫτͰਖ਼ࣜ࠾༻ʢϐϯνͩΑʂʣ
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ؓٳ
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ετϦʔϜ
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࣌ؒॱʹฒΜͩ ਐߦதͷΠϕϯτͷྻ
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ҎԼͷ3छྨ͕ྲྀΕͯ͘Δ • ʢԿΒ͔ͷܕʣ • Τϥʔ • ྃ • ʹ͔͠ڵຯͳ͍ͱ͖ɺ Լ2ͭແࢹ͢Δ͜ͱ
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͜ͷʢʹʣ ྲྀΕͯ͘ΔͷΛ
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ࢹʢlistenʣ͢Δ
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ϦΞΫςΟϒ༻ޠͩͱ subscribingʢߪಡʣ
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·͊ͭ·Γ
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Ͱચ୕͠ͳ͕Β ౧ΛͬͯΔ͓͋ͪΌΜ
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μϒϧΫϦοΫͷ ετϦʔϜʹ͍ͭͯߟ͑Δ
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ී௨ʹ࣮͢Δͱʁ
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μϒϧΫϦοΫͷ࣮ • ΫϦοΫͨ͠λΠϛϯάΛ͓֮͑ͯ͘ม • ִ࣌ؒؒΛௐΔ • τϦϓϧΫϦοΫݕ͠ͳ͍Α͏ʹ • ؆୯ʹͰ͖ͦ͏͚ͩͲΘΓͱ໘ͦ͏
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ετϦʔϜͰߟ͑Δͱʁ
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250msͷִ͕ؒແ͍࣌ؒͰ ΠϕϯτΛ·ͱΊΔ
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Πϕϯτͷ·ͱ·ΓΛ ݸʹม͢Δ
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ݸ͕2ͷ͚ͭͩΛ ϑΟϧλʔ͢Δ
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ΫϦοΫͷ ετϦʔϜ͔Β
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μϒϧΫϦοΫͷ ετϦʔϜ͕ग़དྷͨʂʁ
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ετϦʔϜͷՄೳੑ͕ ݟ͖͑ͯ·ͤΜ͔ʁ
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͕͖ͳͷϦΞΫςΟϒϓϩάϥϛϯά͚ͩ͞ʂ ໋ྩܗϓϩάϥϛϯάͳΜͯΫιήʔͩʂ
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ͦΖͦΖऴΘΓͰ͕͢
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͜Ε͔ΒͷཱྀͷಓඪΛ
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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
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ͪͳΈʹ෦తʹ
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Observerύλʔϯ͕ ΘΕ͍ͯ·͢
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͘͜͠ײ͡Δ༻ޠ ͦͷ͋ͨΓ͔Βདྷ͍ͯ·͢
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Observer༻ޠ • Subject • Observable • Observer • Subscribe
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·ͱΊ
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ࠓͷ·ͱΊ • ϦΞΫςΟϒϓϩάϥϛϯάʮඇಉظσʔλ ετϦʔϜʯΛ༻͍Δϓϩάϥϛϯά • ετϦʔϜԿ͔ΒͰ࡞ΕΔɻ • ετϦʔϜ͍ΖΜͳૢ࡞ʢ߹ɾϑΟϧλɾม ʣ͕Ͱ͖Δɻ • ͯ͢ετϦʔϜͰ͋Δɻ
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Thanks.