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"QQMF͕
Γ͍ͨ์
4XJGU"UUSJCVUFT
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ࣗݾհ
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ೳొཁ !OPUPSPJE
w J04ΞϓϦ։ൃऀ
w ߸͍Γ·͢ిࢉاը
w !OPUPSPJE
w !JSJNBTV
w ࠷ۙͷಈ
w ϒϩά৽͠·ͨ͠
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ॆిใࠂ͞Μ #BUUFSFDFJWFS
w όοςϦʔϞχλʔ ϢʔςΟϦςΟʔ
w ࠷େ ࣮ػϦϞʔτ
w ख࣋ͪͷJ1IPOF͔Βଞʹ͍࣋ͬͯΔ
J1IPOF
J1BEͳͲͷػثͷόοςϦʔঢ়ଶ֬
ೝՄೳ
w ࣗʹ͋ΔJ1IPOFͷόοςϦʔঢ়ଶ֬ೝՄ
ೳ
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ॆిใࠂ͞Μ #BUUFSFDFJWFS
w "QQMF8BUDIରԠ
w $PNQMJDBUJPOTରԠ
w ॆిྃ௨
w ॆిྃΛ͑ͯ͘ΕΔ௨ΛՃ
w ҎԼʹࢦఆ͢Δ͜ͱͰόοςϦʔΛέ
Ξ͢Δ͜ͱ͕Մೳ
w Կ͔ͱߴ͍J1IPOFΛ࣋ͪͤ͞Δͷʹ༗༻
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͢͜ͱ
w 4XJGU"UUSJCVUFTͷେ
w 4XJGU6*ͱ4XJGU"UUSJCVUFTͷؔ
w "QQMFͷͱΓ͏Δಈ͖Λ༧ଌ͢Δ
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͞ͳ͍͜ͱ
w 4XJGU"UUSJCVUFTͷৄࡉ
w ιʔείʔυΛͬͨղઆ
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w 4XJGU6*Ͱઆ໌ͮ͠Β͍!ఆٛ
w 4XJGU"UUSJCVUFTΛେͰ͚ͯΈΔ
w 4XJGU"UUSJCVUFT͔ΒݟΔ4XJGUͷਐԽ
w ·ͱΊ
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4XJGU6*Ͱઆ໌ͮ͠Β͍!ఆٛ
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J045FDI#MPH JSJNBTVDPN
ઈࢍߘதͰ͢
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4XJGU6*
J04ΞϓϦΛओʹߘ
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ϒϩάهࣄΛ
ݕ౼͍ͯͨ͋͠Δ
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TextFieldͷهࣄΛॻ͜͏
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import SwiftUI
struct ContentView: View {
@State var myfield = ""
@ScaledMetric(relativeTo: .body) var
@ScaledMetric(relativeTo: .body) var
@ScaledMetric(relativeTo: .body) var
@ScaledMetric(relativeTo: .body) var
var body: some View {
VStack {
Spacer()
TextField("Label", text: $my
.padding(EdgeInsets(top:
.background(
Rectangle()
.stroke(Color.gr
)
.padding()
TextField("Label", text: $my
.padding(EdgeInsets(top:
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import SwiftUI
struct ContentView: View {
@State var myfield = ""
@ScaledMetric(relativeTo: .body) var
@ScaledMetric(relativeTo: .body) var
@ScaledMetric(relativeTo: .body) var
@ScaledMetric(relativeTo: .body) var
var body: some View {
VStack {
Spacer()
TextField("Label", text: $my
.padding(EdgeInsets(top:
.background(
Rectangle()
.stroke(Color.gr
)
.padding()
TextField("Label", text: $my
.padding(EdgeInsets(top:
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!4UBUF
!4DBMF.FUSJD
ͱԿ
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!ఆٛʹ͍ͭͯ
આ໌ͨ͜͠ͱ͕ͳ͍ɻ
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ͦͦ!ఆٛͱ͍͏
໊শͰ͢Βͳ͍ɻ
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!ఆٛͱͳΜͳͷ͔
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QSPQFSUZ8SBQQFS
ωλόϨ
ͩΑɻ
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ͦΜͳࣄ
Θ͔͍ͬͯΔͷͩΑɻ
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!ఆٛपΓେͰௐͯ
"QQMFͷΛΓ͍ͨɻ
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4XJGU"UUSJCVUFΛେͰ
·ͱΊ͍ͯΔ
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!ఆٛͷਖ਼໊ࣜশ
4XJGU"UUSJCVUFT
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4XJGU"UUSJCVUFࢀߟαΠτ
w 4XJGUͷBUUSJCVUFશղઆʛશछ2JJUB
w IUUQTRJJUBDPNTIUOLHNJUFNTDCBCDECD
w "UUSJCVUFT5IF4XJGU1SPHSBNNJOH-BOHVBHF 4XJGU
w IUUQTEPDTTXJGUPSHTXJGUCPPL3FGFSFODF.BOVBM
"UUSJCVUFTIUNM
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4XJGU"UUSJCVUFTᶃ
4XJGUʹɺએݴʹద༻͞ΕΔଐੑͱܕʹద
༻͞ΕΔଐੑͷछྨ͕͋Γ·͢ɻଐੑɺ
એݴ·ͨܕʹؔ͢ΔՃใΛఏڙ͠·
͢ɻ %FFQ-༁
ɻ
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4XJGU"UUSJCVUFTᶄ
• @attribute name
• @attribute name(attribute arguments)
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4XJGU"UUSJCVUFTᶅ
J044%,࣌Ͱछྨ
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BWBJMBCMF JOMJOBCMF PCKD 6*"QQMJDBUJPO.BJO VOLOPXO
EJTDBSEBCMF3FTVMU NBJO PCKD.FNCFST VTBCMF'SPN*OMJOF
EZOBNJD$BMMBCMF OPOPCKD QSPQFSUZ8SBQQFS
XBSO@VORVBMJ
fi
FE@BD
DFTT
EZOBNJD.FNCFS-P
PLVQ
/4"QQMJDBUJPO.BJO SFTVMU#VJMEFS BVUPDMPTVSF
GSP[FO /4$PQZJOH
SFRVJSFT@TUPSFE@QSP
QFSUZ@JOJUT
DPOWFOUJPO
(,*OTQFDUBCMF /4.BOBHFE UFTUBCMF FTDBQJOH
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ެࣜͷϖʔδͰΞϧϑΝϕοτॱ
ಛʹάϧʔϓԽ͞Ε͍ͯͳ͍
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ଟ͍ͷͰେͰྨͯ͠Έͨ
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େͰྨᶃ
B ઌୡݴޠͱͷޓੑ
C 4XJGUݴޠͷ༷Λิ͢Δͷ
D ϑϨʔϜϫʔΫ։ൃͷαϙʔτ
E 4UPSZCPBSETʹؔ͢ΔಛघࣄʹΑΔͷ
F ݻ༗ϑϨʔϜϫʔΫͷରԠ
G ֎తͳ༷มߋʹରԠ͢Δඞཁ͕͋Δͷ
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େͰྨᶄ
H Ϗϧυ࣌ͷνϡʔχϯάΛ໌ࣔ͢Δͷ
I ςετ࣌ͷརศੑΛਤΔͷ
J ԆධՁɾಈతࢀরΛಋೖ͍ͨ͠ͷ
K ଞݴޠͱͷݺͼग़͠ํ๏Λॊೈʹ͢Δͷ
L 4XJGUݴޠࣗମΛ֦ு͢Δͷ
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Bઌୡݴޠͱͷޓੑ
w $ݴޠΛݺͼग़͠Մೳʹ
0CKFDUJF$Λݺͼग़͠Մೳʹ
w ؔϙΠϯλͷޓੑࢦఆ !DPOWFOUJPO
w Γ͕͋Δ͕ෆཁѻ͍ʹରԠ͢ΔͨΊ !EJTDBSEBCMF3FTVMU
w 0CKFDUJWF$ͷϓϩύςΟͷίϐʔଐੑରԠ !/4$PQZJOH
w NBJOؔͷӅṭ !6*"QQMJDBUJPO.BJO
!/4"QQMJDBUJPO.BJO
w ϚϧνϓϥοτϑΥʔϜʹରԠͨ͠NBJOؔͷӅṭ !NBJO
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C4XJGUݴޠͷ༷Λิ͢Δͷ
w είʔϓ֎ͰΫϩʔδϟʔอ࣋Λ໌ࣔ͢Δͷ !FTDBQJOH
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DϑϨʔϜϫʔΫ։ൃͷαϙʔτ
w ϑϨʔϜϫʔΫར༻ऀʹඇਪͰ͋Δ͜ͱΛࣔ͢(@available)
w SwiftͰ࡞͞ΕͨϑϨʔϜϫʔΫ
w ʙΛObjectie-C͔Βݺͼग़͠Մೳʹ(@objc)
w ʙΛObjective-C͔Βݺͼग़͠ෆՄʹ(@nonobjc)
w ʙΛObjective-C͔ΒҰׅͰݺͼग़͠Մೳʹ(@objcMembers)
w τοϓϨϕϧͷΦϒδΣΫτ͕ଞϑϨʔϜϫʔΫͱࠞࡏΛආ͚Δ(@warn_unquali
fi
ed_access)
w ໌ࣔతʹকདྷόʔδϣϯͰͷվมΛ੍ݶ͢Δͷ(@frozen)
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E4UPSZCPBSETʹؔ͢ΔಛघࣄʹΑΔͷ
w 4XJGUݴޠͷݫີ͔͞Βݴ͏ͱ*OUFSGBDF#VJMEFSͷ"DUJPO
0VUMFU͔ͳΓ
ಛघͳಈ͖
w @IBAction
w @IBOutlet
w @IBDesignable
w @IBInspectable
w @IBSegueAction
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Fݻ༗ϑϨʔϜϫʔΫͷରԠ
w (BNF,JUʹରԠ͢Δͷ !(,*OTQFDUBCMF
w $PSF%BUBʹରԠ͢Δͷ !/4.BOBHFE
w !SFRVJSFT@TUPSFE@QSPQFSUZ@JOJUT
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G֎తͳ༷มߋʹରԠ͢Δඞཁ͕͋Δͷ
w ྻڍʹະͷఆؚ͕ٛ·Εͨ߹ͷ݅هड़ !VOLOPXO
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HϏϧυ࣌ͷνϡʔχϯάΛ໌ࣔ͢Δͷ
w ΠϯϥΠϯల։ʹؔ͢Δͷ(@inlinable)
w ΠϯϥΠϯల։Ͱͷར༻ʹ੍ݶ͢Δͷ(@usableFromInline)
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Iςετ࣌ͷརศੑΛਤΔͷ
w ςετ࣌ʹΞΫηεՄೳͱ͢Δ(@testable)
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JԆධՁΛಋೖ͍ͨ͠ͷ
w ҾͰ͞ΕͨΛΫϩʔδϟʔԽ͠ԆධՁͤ͞Δ(@autoclosure)
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Kଞݴޠͱͷݺͼग़͠ํ๏Λॊೈʹ͢Δͷ
w ߏମΛॊೈͳҾͰݺͼग़ͤΔ༷ʹ͢Δͷ(@dynamicCallable)
w ߏମΛ࣮࣌ʹଘࡏ͠ͳ͍ϓϩύςΟΞΫηεՄೳͱ͢Δͷ
(@dynamicMemberLookup)
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LݴޠࣗମΛ֦ு͢Δͷ
w มʹՃͰ͖Δ4XJGU"UUSJCVUFΛ֦ு͢Δ !QSPQFSUZ8SBQQFS
w ؔͷΓΛ༧ݴޠʹ·Ͱհೖ͠ػೳ֦ு͢Δͷ(@resultBuilder)
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4XJGU"UUSJCVUFTͷҹ
ࡶଟͳػೳͷू߹ʹݟ͑Δ
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ࡶଟ͕ͩΛҙࣝ͠ͳ͍ͷ
༻్͝ͱ8FCͰݕࡧͯ͠͏
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4XJGU"UUSJCVUFʹݴޠࣗମΛ֦ு͢Δ
ػೳ͕૿͑ͨ͜ͱͰݕࡧΩʔϫʔυΛ
બͿͷʹّ
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4XJGU"UUSJCVUFT͔ΒݟΔ
4XJGUͷਐԽ
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छʹ͚͕ͨ
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छͰଟ͍Θ
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छ͔ΒछΛϐοΫΞοϓ
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4XJGUਐԽͷྺ࢙ᶃ
w 4XJGUॳظ
w !*#0VUMFU
!*#"DUJPO
w $ݴޠɺ0CKFDUJWF$ͷػೳݺͼग़͠ɺ4%,ରԠ
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Bઌୡݴޠͱͷޓੑ
w $ݴޠΛݺͼग़͠Մೳʹ
0CKFDUJF$Λݺͼग़͠Մೳʹ
w ؔϙΠϯλͷޓੑࢦఆ !DPOWFOUJPO
w Γ͕͋Δ͕ෆཁѻ͍ʹରԠ͢ΔͨΊ !EJTDBSEBCMF3FTVMU
w 0CKFDUJWF$ͷϓϩύςΟͷίϐʔଐੑରԠ !/4$PQZJOH
w NBJOؔͷӅṭ !6*"QQMJDBUJPO.BJO
!/4"QQMJDBUJPO.BJO
w ϚϧνϓϥοτϑΥʔϜʹରԠͨ͠NBJOؔͷӅṭ !NBJO
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E4UPSZCPBSETʹؔ͢ΔಛघࣄʹΑΔͷ
w 4XJGUݴޠͷݫີ͔͞Βݴ͏ͱ*OUFSGBDF#VJMEFSͷ"DUJPO
0VUMFU͔ͳΓ
ಛघͳಈ͖
w @IBAction
w @IBOutlet
w @IBDesignable
w @IBInspectable
w @IBSegueAction
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4XJGUਐԽͷྺ࢙ᶄ
w 4XJGU༷҆ఆظ
w 4XJGUͷ༷͕ݻ·Γ࢝Ί֦ுػೳ͕4XJGU"UUSJCVUFՃ͢ΔΑ͏ʹ
w 4XJGU͚ͩͰϑϨʔϜϫʔΫ࣮Մೳʹ
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DϑϨʔϜϫʔΫ։ൃͷαϙʔτ
w ϑϨʔϜϫʔΫར༻ऀʹඇਪͰ͋Δ͜ͱΛࣔ͢(@available)
w SwiftͰ࡞͞ΕͨϑϨʔϜϫʔΫ
w ʙΛObjectie-C͔Βݺͼग़͠Մೳʹ(@objc)
w ʙΛObjective-C͔Βݺͼग़͠ෆՄʹ(@nonobjc)
w ʙΛObjective-C͔ΒҰׅͰݺͼग़͠Մೳʹ(@objcMembers)
w τοϓϨϕϧͷΦϒδΣΫτ͕ଞϑϨʔϜϫʔΫͱࠞࡏΛආ͚Δ(@warn_unquali
fi
ed_access)
w ໌ࣔతʹকདྷόʔδϣϯͰͷվมΛ੍ݶ͢Δͷ(@frozen)
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4XJGUਐԽͷྺ࢙ᶅ
w ࠷ۙ ʙ
w ଞݴޠͰͷݺͼग़͠Λ༻ҙʹ͢ΔͨΊಈతࢀরΛ࠶औΓࠐΈ
w !ఆٛΛ֦ுͰ͖ΔΑ͏ʹ
w Γͷ֦ு ༧ޠ·Ͱؔ༩͢Δڍಈมߋ͕Մೳ
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4XJGUͷΞοϓσʔτྺ࢙ᶅ
w ࠷ۙ ʙ
w ଞݴޠͰͷݺͼग़͠Λ༻ҙʹ͢ΔͨΊಈతࢀরΛ࠶औΓࠐΈ
w !ఆٛΛ֦ுͰ͖ΔΑ͏ʹ
w Γͷ֦ு ༧ޠ·Ͱؔ༩͢Δڍಈมߋ͕Մೳ
ॏཁ
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LݴޠࣗମΛ֦ு͢Δͷ
w มʹՃͰ͖Δ4XJGU"UUSJCVUFΛ֦ு͢Δ !QSPQFSUZ8SBQQFS
w ؔͷΓΛ༧ݴޠʹ·Ͱհೖ͠ػೳ֦ு͢Δͷ(@resultBuilder)
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4XJGU6*Ͱͷ4XJGU"UUSJCVUF
w !SFTVMU#VJMEFS !@GVODUJPO#VJMEFS͔Β໊শมߋ
w 4XJGUͷ༧ޠɺฒͼ·Ͱؔ༩ 4XJGU6*্ͰͷJGจ
w هड़ϧʔϧΛڧ੍ 4XJGU6*Ͱݴޠͷ%4-Խʹ༻
w هड़ΤϥʔΛίϯύΠϥϨϕϧͰิͰ͖Δ
w !QSPQFSUZ8SBQQFS
w มʹ༩͢Δ4XJGU"UUSJCVUFΛ֦ு ಠࣗఆٛͷՃ
w 4XJGU6*ͰมͷମࡋΛอͪͭͭతʹػೳ༩ʹ༻
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struct ContentView: View {
@State var isRounded = true // propertyWrapper
// ViewͷBody1ͭͷView͔͠هड़Ͱ͖ͳ͍
var body: some View {
// isRounded ʙ else ·ͰresultBuilderʹΑΔهड़ϧʔϧͰ͋ͬͯݴޠͷifจͱҟͳΔ
// ৗʹܕҧ͏͕1ͭͷViewΛฦ͢
if isRounded {
RoundedRectangle(cornerRadius: 20)
.foregroundColor(.orange)
.frame(width: 72, height: 72)
.onTapGesture {
isRounded = !isRounded
}
} else {
Rectangle()
.foregroundColor(.blue)
.frame(width: 72, height: 72)
.onTapGesture {
isRounded = !isRounded
}
}
}
}
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struct ContentView: View {
@State var isRounded = true // propertyWrapper
// ViewͷBody1ͭͷView͔͠هड़Ͱ͖ͳ͍
var body: some View {
// isRounded ʙ else ·ͰresultBuilderʹΑΔهड़ϧʔϧͰ͋ͬͯݴޠͷifจͱҟͳΔ
// ৗʹܕҧ͏͕1ͭͷViewΛฦ͢
if isRounded {
RoundedRectangle(cornerRadius: 20)
.foregroundColor(.orange)
.frame(width: 72, height: 72)
.onTapGesture {
isRounded = !isRounded
}
} else {
Rectangle()
.foregroundColor(.blue)
.frame(width: 72, height: 72)
.onTapGesture {
isRounded = !isRounded
}
}
}
}
!QSPQFSUZ8SBQQFS
!SFTVMU#VJMEFS
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։ൃऀ͔Βݟͨ
4XJGUͷΠϝʔδ
ˡ$ݴޠɺ0CKFDUJWF$αϙʔτ͢Δ৽ݴޠ
ˡݴޠػೳ͕ॆ࣮͠ɺ'31Ͱ࠷৽ϓϩάϥϛϯάٕ
ज़ΛಋೖͰ͖ΔΑ͏ʹͳͬͨɻ
4XJGU6*
ݴޠػೳ͕ҙਤ͠ͳ͍ํͰ֦ு
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"QQMF͕Γ͍ͨ์4XJGU
• ݴޠతʹWeb։ൃऀʹੑ͕͋Δ༷ʹઃܭ
• FRPʹۙ͢ΔΘ͚Ͱͳ͍(ϦΞΫςΟϒϓϩάϥϛϯά)
• OOPʹݻࣥ͢ΔΘ͚Ͱͳ͍(ΦϒδΣΫτࢦ)
• ݴޠ༷AppleҎ֎αϙʔτ͢Δ
• (UbuntuɺCentOSɺAmazon Linux, Windows10)
• ݴޠ༷͕ݻ·ͬͯAppleΈࠐΈ͍ͨػೳΈࠐΉ
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͔͜͜Β༧ଌ
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"QQMFͷΓ͍ͨ์
Ͳ͜ʹ͔͏ͷ͔
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৽σόΠε
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ͪΖΜͦ͏ͩ
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ͬͱۙͳଘࡏ͕
͍Δ͡Όͳ͍͔ɻ
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8FC"TTFNCMZ͔Βͷ
8FCϑϩϯτΤϯυ
ରԠ
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·ͱΊ
w 4XJGU"UUSJCVUFTʹ͍ͭͯେͰ·ͱΊ·ͨ͠
w 4XJGUͷݴޠ༷͔Β֎ΕΔػೳ͕ࡶଟʹ4XJGU"UUSJCVUFTʹՃ͞
Ε͍ͯ·͢
w 4XJGUͷݴޠ༷ʹؔͳ͘"QQMFࣗͷΓ͍ͨػೳΛͶ͡ࠐΈ
·͢
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IUUQTJSJNBTVDPN
<13>#MPHਵ࣌ߘத
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ࢀߟ
w 4XJGUͷBUUSJCVUFશղઆʛશछ2JJUB
w IUUQTRJJUBDPNTIUOLHNJUFNTDCBCDECD
w "UUSJCVUFT5IF4XJGU1SPHSBNNJOH-BOHVBHF 4XJGU
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