Codableはイケメン / 20160616 #otemachi_swift

Otemachi.swift #01 - WWDC17 振り返り - connpass
https://nikkei.connpass.com/event/58452/
の発表資料です。

# 参考リンク

What's New in Foundation - WWDC 2017 - Videos - Apple Developer
https://developer.apple.com/videos/play/wwdc2017/212/

Swift 4から実装されるCodable/codable_in_foundation_with_swift4 // Speaker Deck
https://speakerdeck.com/fromkk/codable-in-foundation-with-swift4

Decodable - Pairs Taiwan // Speaker Deck
https://speakerdeck.com/muukii0803/decodable-pairs-taiwan

Transcript

1. Codable͜ͱ͸͡Ί by. 2017/6/16 Otemachi.swift #01 1
2. takasek iOS Developer ϑϦʔϥϯε(΄΅FiNC) @takasek OSS ActionClosurable Notifwift౳ 2
3. Codable introduced in WWDC2017 https://developer.apple.com/videos/play/wwdc2017/212/ 3
4. Codable͸ϞςϞς ֤ॴWWDCৼΓฦΓձͰɺ୞ࠓ3೔࿈ଓͷϐοΫΞοϓه࿥थཱத 6/14 AKIBA.swift / by fromkkɹ6/15 eureka Meetup / by Muukii ɹ!ͬ͘͟Γ֓ཁ௫ΊΔࢿྉɹɹ!DecodingErrorʹ͍ͭͯৄ͍͠ 4
5. վ୊ Codable͸Πέϝϯ by. 2017/6/16 Otemachi.swift #01 5
7. Codable ͷΠέϝϯϙΠϯτ 4 جຊతʹ࢖͍ํ͸ ܕʹ Codable Λ͚ͭΔ͚ͩʂ 4 ͚ͩͲCustomizable 4 ͲΜͳEncoder/Decoderʹରͯ͠΋ (JSON, Plist, ·ͩݟ͵something...)࠶ར༻Մೳ 7
8. ʲ༨ஊʳ Decoderͱ͍͑͹ ࣗ࡞ CSVDecoder ͷ࡞ྫ QiitaͰެ։ͯ͠·͢! 8
9. Ͳ͏customizableͳͷ͔ جຊɺίϯύΠϥ͕ܕͷϝϯόΛࣗಈੜ੒ ※protocol extensionΛར༻ͯ͠Δ = ࣮૷্ॻ͖Մೳ Ωʔ໊ΛΧελϜ͍ͨ͠ʂ ! CodingKeyΛࣗલ࣮૷ σίʔυϩδοΫΛΧελϜ͍ͨ͠ʂ ! initΛࣗલ࣮૷ 9
12. طଘͷSwiftͷ࢓૊ΈΛ ׆༻ͯ͠·͢Ͷʂ ͘ʙʙʙʙʙͬʂ Πέϝϯʂ! 12
13. ·ͩ·ͩ͋Γ·͢ CodableͷΠέϝϯϙΠϯτ 13
14. ͍͍ͩͨͷܕ͸Codable ͔ͩΒɺCodableͳܕͷू߹Ͱ͋Δ Ϣʔβʔఆٛܕ΋αΫοͱCodableΕΔ 14
15. classͷܧঝ΋ߟྀࡁ superdecoder ͰsuperclassΛσίʔυ 15
16. Date, Data ʹ͍ͭͯɺಈతʹ Encoding StrategiesΛܾΊΒΕΔ ʢ͜Ε͸JSONEncoder/Decoderͷ࿩͚ͩͲʣ 16
17. Codable Philosophy͸௒Πέϝϯ 4 Error handling built-in 4 ૊Έࠐ·ΕͨΤϥʔ੍ޚ 4 Encapsulate encoding details 4 ΤϯίʔσΟϯάͷৄࡉΛΧϓηϧԽ 4 Abstract format from type 4 ந৅Խ͞ΕͨϑΥʔϚοτ 17
18. Codable Philosophy͸௒Πέϝϯ 4 Error handling built-in 4 ૊Έࠐ·ΕͨΤϥʔ੍ޚ 4 Encapsulate encoding details 4 ΤϯίʔσΟϯάͷৄࡉΛΧϓηϧԽ 4 Abstract format from type 4 ந৅Խ͞ΕͨϑΥʔϚοτ 18
19. Error handling built-in ᶃ ৄࡉͳΤϥʔͰσίʔυ/Τϯίʔυͷࣦഊ Λڭ͑ͯ͘ΕΔ AppleͷϓϨθϯλʔ ʮ༧ظ͠ͳ͍input͸ɺAPIมߋͳͲͰ࣌ʹΑͬͯى͜ Γ͏ΔɻͳͷͰFatalErrorʹ͸͠ͳ͍͜ͱʹܾΊͨʯ Τϥʔͷৄࡉ͸ࡢ೔ͷMuukii͞Μͷࢿྉࢀর https://speakerdeck.com/muukii0803/ decodable-pairs-taiwan 19
20. Error handling built-in ᶄ SwiftͷܕγεςϜͰ͸දݱ͖͠Εͳ͍ υϝΠϯݻ༗ͷόϦσʔγϣϯΛ ΠχγϟϥΠζ࣌ʹ࣮ߦՄೳ 20
21. σίʔυͷϑΣʔζ 1. σίʔυ 4 όΠτσʔλ 4 ߏ଄Λ࣋ͭόΠτσʔλ (JSON౳) 4 ܕ෇͚͞Εͨσʔλ(Swift ͷܕ) 2. όϦσʔγϣϯ 4 Domain-specific validation 4 Graph-level validation 21
23. URLͷscheme͕ https Ͱ͋Δ͜ͱΛ ܕͱͯ͠ڧ੍Ͱ͖ͨʂ 23
24. Codable Philosophy 4 Error handling built-in 4 ૊Έࠐ·ΕͨΤϥʔ੍ޚ 4 Encapsulate encoding details 4 ΤϯίʔσΟϯάͷৄࡉΛΧϓηϧԽ 4 Abstract format from type 4 ந৅Խ͞ΕͨϑΥʔϚοτ 24
25. Protocol Orientedͳઃܭ͕Πέϝϯ 25
26. ͦΜͳϓϩτίϧઃܭͷΠέϝϯͬ΀Γ ΋ͬͱৄ͘͠ޠΓ͍ͨΜͰ͕͢… !" …·ͨผͷػձʹʂ 26