Kotlin Conf Overview CA.kt

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Kotlin Conf Overview 2017.12.18 CA.kt #5 @େࡕ 2017.12.19 CA.kt #6 @෱Ԭ @satorufujiwara

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About me Satoru Fujiwara (@satorufujiwara) Android Engineer @CyberAgent ,Inc Organizer of Shibuya.apk

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Kotlin & Me FRESH! ΛKotlinͰ։ൃ (2015೥3݄ʙ) Kotlin Advent Calendar (2015೥/2016೥/2017೥) -ʮ2016೥ɺKotlinͰAndroid։ൃ͢Δํ΁ʯ @Qiita ( goo.gl/0medax ) Kotlinೖ໳·Ͱͷॿ૸ಡຊ ( goo.gl/5vUT7o ) Kotlin ΠϯɾΞΫγϣϯ (຋༁ 2017೥10݄31೔ग़൛)

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Kotlin in Action • Kotlinͷ։ൃνʔϜʹΑͬͯॻ͔Εͨຊ • Kotlinͷίϯηϓτ͔ΒKotlinͷݴޠػೳΛج ຊػೳ(if/when/ΫϥεͳͲ)͔Βൃలػೳ (nullable/lambda/ߴ֊ؔ਺/૯শܕ)·ͰΧόʔ • ຋༁͠·ͨ͠ʂ

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ւ֎ΧϯϑΝϨϯεࢀՃྺ • Googel I/O (2015/2016/2017) • DroidCon NY 2015 • DroidCon London 2016 • DroidCon SF 2017 • Kotlin Conf 2017

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@satofurujiwara Kotlin Conf Overview 6

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Kotlin Conf • KotlinΛςʔϚʹͨ͠ॳΊͯͷΧϯϑΝϨϯε • ओ࠵͸JetBrains • ৔ॴ͸αϯϑϥϯγείͷԊ؛෦(Pier 27) • 1200ຕͷνέοτ͕ചΓ੾Ε

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8 Union Square Twitter Uber DroidConSF KotlinConf ςϯμʔϩΠϯ ϑΟογϟʔϚϯζɾϫʔϑ Moscone Center Golden Gate Bridge

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@satofurujiwara Kotlin Conf Partners 10

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12 Kotlin Conf / DroidCon SF

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JetBrainsͷϒʔε Kotlinͷ։ൃνʔϜ͕͍Δ

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Androidͷϒʔε ChetࢯɺYigitࢯͳͲGoogler΋དྷͯͨ

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KotlinϞχϡϝϯτ DroidConʹൺ΂͓͕͔͔͍ͯۚͬͯΔײ

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@satofurujiwara Kotlin Conf Sessions 17

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Keynote Kotlin for Multiplatform

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Kotlin Conf Keynote • Kotlin 1.2 RC (support for multi-platform project) • Kotlin/Native iOS Support • ৄ͘͠͸ϒϩάʮKotlinConf Keynote Recapʯ • https://blog.jetbrains.com/kotlin/2017/11/kotlinconf-keynote- recap/

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Android Kotlin Guides https://android.github.io/kotlin-guides/

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Kotlin Conf Sessions • 44 sessions • 3 tracks (St. Petersburg / Munich / Prague) • JetBrains / Google + CfP • TBA sessions : Kotlin/Nativeͷ࿩ • ಈը͕શͯެ։͞Ε͍ͯΔ • https://blog.jetbrains.com/kotlin/2017/12/kotlinconf-2017-session-recordings-and-photos-are-here/ • ηογϣϯ༻ͷΞϓϦ͕͋Δ(Android / iOS)

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Sessions Detail • ݴޠʹ͍ͭͯ : 9 • Tool(Gradle,Lint etc)ʹ͍ͭͯ : 6 • ϚϧνϓϥοτϑΥʔϜ(Kotlin/Native Kotlin/JS) : 4 • Spring : 4 • ίϧʔνϯ : 3 • kategory.ioͷએ఻ : 2

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kategory.io KΛTEGORY is a library for Typed Functional Programming in Kotlin. It includes the most popular data types, type classes and abstractions such as Option, Try, Either, IO, Functor, Applicative, Monad…

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@satofurujiwara Pickup Sessions 24

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Voting System ग़ޱͰ഑ΒΕͨΧʔυΛ౤ථ͢Δ

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Kotlin Conf Apps https://github.com/JetBrains/kotlinconf-app ΞϓϦͰ΋౤ථͰ͖Δ

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Top Five Rated Talks • Kotlin Puzzlers by Anton Keks • The Road to Kotlintown by Huyen Tue Dao and Christina Lee • Two Stones, One Bird: Implementation Tradeoffs by Christina Lee • Party Keynote by Michael Carducci • How to Contribute by Yoshinori Isogai

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Kotlin Puzzlers by Anton Keks • Kotlinͷݴޠ࢓༷Λ࢖ͬͨΫΠζ • https://github.com/angryziber/kotlin-puzzlers

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The Road to Kotlintown by Huyen Tue Dao and Christina Lee • @queencodemonkey͞Μͱ@RunChristinaRun͞Μ • લ൒͸ओʹKotlin In Action 9ষʮδΣωϦΫεʯͷ࿩ • ޙ൒͸֦ுؔ਺ɺϥϜμɺDSL () • ܕͷ࿩ΛίʔυΛ࢖ͬͯղઆ(ϓϨθϯࢿྉ͕ίʔυ) • UnitܕɺδΣωϦΫεܕͷมҐͷ࿩ͳͲ

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Two Stones, One Bird: Implementation Tradeoffs by Christina Lee • ೋੴҰௗ (ೋ཯എ൓ͳ΋ͷ͸ٞ࿦ͯ͠࢖͓͏) • let/apply/run/with/also ͱ͍ͬͨείʔϓؔ਺ͷ࢖͍ॴ • Delegates.notNull or lateinit • ϓϩύςΟ or ؔ਺(fun) ͷͲͪΒΛ࢖͏͔

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Christina Lee(@RunChristinaRun) The Road to Kotlintown  Two Stones, One Bird: Implementation Tradeoffs

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Party Keynote by Michael Carducci • Ұ೔໨ͷPartyલͷ࠷ऴηογϣϯ • ϚδοΫ

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How to Kontribute by Yoshinori Isogai • Kotlinͷ։ൃ؀ڥΛ੔͑ͯɺKotlinͷContributer(Kontributer)ʹͳΔ·Ͱ ͷखॱ • LT1ճ͔ͨ͜͠͠ͱͳ͔ͬͨΤϯδχΞ͕KotlinConf 2017ʹొஃ͓ͨ͠࿩ • http://shiraji.hatenablog.com/entry/2017/11/04/193914 • How to Kontribute @ dex.fm • http://dex.fm/post/168154381478/037-how-to-kontribute

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How to Kontribute The Only Japanese Speaker

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Other Pickup Sessions • Kotlin Types: Exposed by Svetlana Isakova • Bootiful Kotlin by Josh Long • How to Build a React App in Kotlin by Dave Ford • Testing Kotlin at Scale: Spek by Artem Zinnatullin

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Kotlin Types: Exposed by Svetlana Isakova • Kotlinͷܕʹ͍ͭͯͷ࿩ • جຊܕ/Nullڐ༰ܕ/Collectionܕ • Kotlin In Action ͷ6ষͷ಺༰͔ΒͷൈਮͰ͋Δ͕ඞݟ

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Svetlana Isakova(@sveta_isakova) Developer Advocate, Author of Kotlin In Action Kotlin Types: Exposed

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@satofurujiwara Summary 43

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Kotlin Conf Overview • JetBrains+Google͕׬શʹαϙʔτͨ͠KotlinΧϯϑΝϨϯε • ͓͔͚͍ۚͯΔɺෆ׳Εͳ෦෼΋͋Δ(WiFi౳) • Kotlinͷݴޠͷະདྷͷ࿩(ϚϧνϓϥοτϑΥʔϜ)͕ଟ͍ • Android Speciﬁc͸΄΅0ɺॳาతͳ಺༰΋ଟ͔͔ͬͨ΋ • ΞοτϑΥʔϜͰ࣭ٙԠ౴΋ଟΊ • Have a Nice Kotlin!

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Next Steps • ϒϩάΛνΣοΫ : KotlinConf Keynote Recap • kotlinconf-appͷ࣮૷ΛݟΔ • ಈը/εϥΠυͷνΣοΫ

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Thank you! Have a Nice Kotlin!