初めての Source of Truth / Brief Intro to Source of Truth

ॳΊͯͷ4PVSDFPG5SVUI f o r : 6 . & .
* T X J G U d Έ Μ ͳ Ͱ ৼ Γ ฦ Ζ ͏ ɺ 8 8 % $ d ?

} var employedBy = "YUMEMI Inc." var job = "iOS
Tech Lead" var favoriteLanguage = "Swift" var twitter = "@lovee" var qiita = "lovee" var github = "el-hoshino" var additionalInfo = """ ࣾ಺ϏσΦձٞͰ Vzoomer ૿΍͠·ͨ͠ʂ """ final class Me: Developable, Talkable {

4PVSDFPG5SVUI ਅ࣮ ιʔείʔυ

4PVSDF ΋ͱɺݯɺىݯ˗෺ࣄ͕࢝·ͬͨ৔ॴ΍ɺͦͷݩͱ ͳͬͨਓ΍෺ࣄɻ ʤ৘ใͷʥൃ৴ݩɺ৘ใݯɺফଉے˗ʲ༻๏ʳ௨ྫ TPVSDFT ʬ஍ֶʭʤ઒ͳͲͷʥਫݯʢ஍ʣ ʬిؾʭʤిքޮՌܕτϥϯδελͷʥιʔε ʬίʭιʔεɾίʔυ˗ʲಉʳTPVSDFDPEF ग़యɿ<ӳࣙ࿠> IUUQTFPXBMDDPKQTFBSDI
RTPVSDF

4PVSDFPG5SVUI ਅ࣮ ىݯ ৘ใݯ

4PVSDFPG5SVUI ৗʹҰͭͰ͋Δ΂͖ʢ4JOHMF4PVSDFPG5SVUIʣ w୭͕͜ͷσʔλΛॴ༗͍ͯ͠Δ͔ ඞཁʹԠͯ͡ద੾ͳڞ༗ΛબͿ wڞ༗ઌͰ஋͕มߋՄೳ͔Ͳ͏͔

-JTU 7JFX %FUBJM 7JFX isOn: Bool isOn: Bool ભҠ 4PVSDF
PG5SVUI 4PVSDF PG5SVUI JT0O͸ͦΕͧΕͷϏϡʔͷ ݻ༗ঢ়ଶͷͨΊɺ ͦΕͧΕಠཱͨ͠4PVSDF PG5SVUIʹͳΔ

-JTU 7JFX %FUBJM 7JFX name: String name: String ಉ͡৘ใ͕ෳ਺Օॴʹଘࡏ͢Δʂ มߋ͕ڞ༗͞Εͳ͍
ͲΕ͕ਖ਼͍͔͕͠Θ͔Βͳ͍ ৘ใͷ෼ࢄ؅ཧɺμ ϝɻઈର ભҠ

-JTU 7JFX %FUBJM 7JFX name: String ભҠ ࢀর 4PVSDF PG5SVUI
3FGFSFODF PG5SVUI

-JTU 7JFX %FUBJM 7JFX ભҠ ࢀর 4PNFXIFSF name: String 4PVSDF
PG5SVUI 3FGFSFODF PG5SVUI 3FGFSFODF PG5SVUI

-JTU 7JFX %FUBJM 7JFX "QQ 4DFOF -JTU 7JFX %FUBJM 7JFX
4DFOF App Data Scene Data Scene Data List View Data List View Data ભҠ ࢀর

Մมσʔλ σʔλ͕஋ܕ ʢString΍Intʣ σʔλ͕ࢀরܕ ʢObservableObjectʣ ιʔε @State var @StateObject var
ෆՄมڞ༗ let let Մมڞ༗ @Binding var @ObservedObject var ෆՄมσʔλ σʔλ͕஋ܕ ʢString΍Intʣ σʔλ͕ࢀরܕ ʢObservableObjectʣ ιʔε let let ෆՄมڞ༗ let let Մมڞ༗ /" /" NEW

ෆՄมڞ༗ let let Մมڞ༗ @Binding var @ObservedObject var ෆՄมσʔλ σʔλ͕஋ܕ ʢString΍Intʣ σʔλ͕ࢀরܕ ʢObservableObjectʣ ιʔε let let ෆՄมڞ༗ let let Մมڞ༗ /" /" NEW ࣗ෼͸ͦͷσʔλΛม͑ͳ͍͚Ͳɺ ผͷը໘ʹΑͬͯͦͷσʔλ͕มΘͬͨΒ ࣗ෼Λߋ৽͠ͳ͍ͱ͍͚ͳ͍ɻ ͦΕͰ΋letͳͷʁ! ͦ͏Ͱ͢ʂ

6*,JU6*7JFX 4XJGU6*7JFX ܕ ࢀরܕ ஋ܕ ੜ੒࣌ظ Ϗϡʔ࡞੒࣌ ඳըߋ৽։࢝࣌ ഁغ࣌ظ ϏϡʔώΤϥϧΩʔ͔Β
ͳ͘ͳͬͨͱ͖ ඳըߋ৽ऴ͙ྃ࣌͢ ੜଘظؒ جຊ௕͍ ඇৗʹ୹͍ ੜ੒ճ਺ جຊগͳ͍ ඇৗʹଟ͍ ຊ࣭ ϏϡʔΦϒδΣΫτͦͷ΋ͷ ϏϡʔͷϨϯμϦϯάઆ໌

6*,JU6*7JFX 4XJGU6*7JFX ܕ ࢀরܕ ஋ܕ ੜ੒࣌ظ Ϗϡʔ࡞੒࣌ ඳըߋ৽։࢝࣌ ഁغ࣌ظ ϏϡʔώΤϥϧΩʔ͔Β
ͳ͘ͳͬͨͱ͖ ඳըߋ৽ऴ͙ྃ࣌͢ ੜଘظؒ جຊ௕͍ ඇৗʹ୹͍ ੜ੒ճ਺ جຊগͳ͍ ඇৗʹଟ͍ ຊ࣭ ϏϡʔΦϒδΣΫτͦͷ΋ͷ ϏϡʔͷϨϯμϦϯάઆ໌ ඞཁʹͳͬͨͱ͖ ౎౓ੜ੒͞ΕΔͨΊ letͰ΋ਖ਼͘͠ ϨϯμϦϯά͞ΕΔ" ͋Εʁ͡Ό͋ 4PVSDFPG5SVUI ͷϏϡʔ͸ʁ

ෆՄมڞ༗ let let Մมڞ༗ @Binding var @ObservedObject var ෆՄมσʔλ σʔλ͕஋ܕ ʢString΍Intʣ σʔλ͕ࢀরܕ ʢObservableObjectʣ ιʔε let let ෆՄมڞ༗ let let Մมڞ༗ /" /"

!4UBUFͱ!4UBUF0CKFDUͷҙٛ σʔλ͕ߋ৽͞Εͨͱ͖ɺࢀরΛ࣋ͭΠϯελϯεʹ ௨஌Λग़͢ 4XJGU6*ʹ͓͍ͯɺViewߏ଄ମͱ͸ผͷ৔ॴͰ֨ೲ ͠ɺσʔλͷੜଘظؒΛ7JFXͷϥΠϑαΠΫϧ͔Β ղ์ -JTU 7JFX 4XJGU6* isOn:
Bool @State

·ͱΊ w 4PVSDFPG5SVUIΛৗʹ৺͕͚Α͏ w ద੾ͳσʔλએݴͰ4PVSDFPG5SVUIΛҡ࣋͠Α͏ w 4XJGU6*ͷ7JFX͸ͨͩͷϨϯμϦϯάઆ໌ʂ 4XJGU6*ʹݶΒͣ ͲΜͳઃܭʹ΋௨༻ͦ͠͏

͞Βʹৄ͍͠৘ใʹ͍ͭͯ w 88%$ηογϣϯ౳ w IUUQTEFWFMPQFSBQQMFDPNEPDVNFOUBUJPOTXJGUVJTUBUF BOEEBUBqPX w IUUQTEFWFMPQFSBQQMFDPNWJEFPTQMBZXXED w IUUQTEFWFMPQFSBQQMFDPNWJEFPTQMBZXXED
w ಛʹ!&OWJSPONFOU0CKFDUɺ!"QQ4UPSBHF΍0CTFSWBCMF 0CKFDUͳͲͷઆ໌͸ׂѪ͍͠ΔͷͰɺؾʹͳΔํ͸ͥͻ্ͷϦϯ ΫΛʂ

初めての Source of Truth / Brief Intro to Source of...

初めての Source of Truth / Brief Intro to Source of Truth

Elvis Shi

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ॳΊͯͷ4PVSDFPG5SVUI f o r : 6 . & .

} var employedBy = "YUMEMI Inc." var job = "iOS

4PVSDFPG5SVUI ਅ࣮ ιʔείʔυ

4PVSDFPG5SVUI ਅ࣮ ىݯ ৘ใݯ

4PVSDFPG5SVUI ৗʹҰͭͰ͋Δ΂͖ʢ4JOHMF4PVSDFPG5SVUIʣ w୭͕͜ͷσʔλΛॴ༗͍ͯ͠Δ͔ ඞཁʹԠͯ͡ద੾ͳڞ༗ΛબͿ wڞ༗ઌͰ஋͕มߋՄೳ͔Ͳ͏͔

-JTU 7JFX %FUBJM 7JFX isOn: Bool isOn: Bool ભҠ 4PVSDF

-JTU 7JFX %FUBJM 7JFX name: String name: String ಉ͡৘ใ͕ෳ਺Օॴʹଘࡏ͢Δʂ มߋ͕ڞ༗͞Εͳ͍

-JTU 7JFX %FUBJM 7JFX name: String ભҠ ࢀর 4PVSDF PG5SVUI

-JTU 7JFX %FUBJM 7JFX ભҠ ࢀর 4PNFXIFSF name: String 4PVSDF

-JTU 7JFX %FUBJM 7JFX "QQ 4DFOF -JTU 7JFX %FUBJM 7JFX

Մมσʔλ σʔλ͕஋ܕ ʢString΍Intʣ σʔλ͕ࢀরܕ ʢObservableObjectʣ ιʔε @State var @StateObject var

Մมσʔλ σʔλ͕஋ܕ ʢString΍Intʣ σʔλ͕ࢀরܕ ʢObservableObjectʣ ιʔε @State var @StateObject var

6,JU67JFX 4XJGU6*7JFX ܕ ࢀরܕ ஋ܕ ੜ੒࣌ظ Ϗϡʔ࡞੒࣌ ඳըߋ৽։࢝࣌ ഁغ࣌ظ ϏϡʔώΤϥϧΩʔ͔Β

6,JU67JFX 4XJGU6*7JFX ܕ ࢀরܕ ஋ܕ ੜ੒࣌ظ Ϗϡʔ࡞੒࣌ ඳըߋ৽։࢝࣌ ഁغ࣌ظ ϏϡʔώΤϥϧΩʔ͔Β

Մมσʔλ σʔλ͕஋ܕ ʢString΍Intʣ σʔλ͕ࢀরܕ ʢObservableObjectʣ ιʔε @State var @StateObject var

!4UBUFͱ!4UBUF0CKFDUͷҙٛ σʔλ͕ߋ৽͞Εͨͱ͖ɺࢀরΛ࣋ͭΠϯελϯεʹ ௨஌Λग़͢ 4XJGU6ʹ͓͍ͯɺViewߏ଄ମͱ͸ผͷ৔ॴͰ֨ೲ ͠ɺσʔλͷੜଘظؒΛ7JFXͷϥΠϑαΠΫϧ͔Β ղ์ -JTU 7JFX 4XJGU6 isOn:

·ͱΊ w 4PVSDFPG5SVUIΛৗʹ৺͕͚Α͏ w ద੾ͳσʔλએݴͰ4PVSDFPG5SVUIΛҡ࣋͠Α͏ w 4XJGU6ͷ7JFX͸ͨͩͷϨϯμϦϯάઆ໌ʂ 4XJGU6ʹݶΒͣ ͲΜͳઃܭʹ΋௨༻ͦ͠͏

͞Βʹৄ͍͠৘ใʹ͍ͭͯ w 88%$ηογϣϯ౳ w IUUQTEFWFMPQFSBQQMFDPNEPDVNFOUBUJPOTXJGUVJTUBUF BOEEBUBqPX w IUUQTEFWFMPQFSBQQMFDPNWJEFPTQMBZXXED w IUUQTEFWFMPQFSBQQMFDPNWJEFPTQMBZXXED