Swift API Design learning from Cocoa API changes

Cocoa API changesから学ぶSwift API Designについて。

Swift API Guidelines: https://swift.org/documentation/api-design-guidelines/
iOS 10 API Diffs: https://developer.apple.com/library/archive/releasenotes/General/iOS10APIDiffs/Swift/UIKit.html

PR:
毎週火曜日 iOS Night を開催しています
https://github.com/wantedly/ios_night

Transcript

1. ©2019 Wantedly, Inc. Swift API Design
 learning from Cocoa API changes try! Swift Pre Talks 2019 Mar 19, 2019 - Kento Nagata
2. ©2018 Wantedly, Inc. ,FOUP
   /BHBUB 8BOUFEMZ
   *OD
   
   4PGUXBSF
   &OHJOFFS 8IBU
   *
   EP
   OPX
   ɾ(SPXUI
   PG
   8BOUFEMZ
   7JTJU
   
 &OHJOFFSJOH
   ɾ3BJMT
   
   ZFBST
   ɾJ04
   4XJGU
   
   ZFBS
   
   /FX
3. ©2019 Wantedly, Inc. Cocoa APIͷมߋ͔ΒAPI DesignΛཧղ͢Δ ࠓ೔࿩͢͜ͱ
4. ©2019 Wantedly, Inc. TXJGUPSHʹ͋Δ
 l"1*
   %FTJHO
   (VJEFMJOFTz
 ΛಡΜͩ͜ͱ͕͋Δํ͸
 ͨ͘͞Μ͍Δͱࢥ͍·͢
5. ©2019 Wantedly, Inc. l"1*
   %FTJHO
   (VJEFMJOFTz
 ͸ඇৗʹॏཁ
6. ©2019 Wantedly, Inc. ͜ͷΑ͏ͳࢦ਑΍׳श͸
 ࣮ࡍͷྫΛݟͨํ͕ૣ͍
7. ©2019 Wantedly, Inc. ΋ͬͱ΋࣮ྫͱͯ͠༏Ε͍ͯΔͷ͕ɺ
 J04
   4%,
   $PDPBͰ͋Γ
   "QQMFͷίʔυͰ͢
8. ©2019 Wantedly, Inc. ͦͷલʹl"1*
   %FJHO
   (VJEFMJOFTzͷ
 ಺༰ͷུ֓ʹ͍͓ͭͯ͞Β͍͠·͢
9. ©2019 Wantedly, Inc.  'VOEBNFOUBMT
    /BNJOH
   w 1SPNPUF
   $MFBS
   6TBHF
   w 4USJWF
   GPS
   'MVFOU
   6TBHF
   w 6TF
   5FSNJOPMPHZ
   8FMM
    $POWFOUJPOT
   w (FOFSBM
   $POWFOUJPOT
   w 1BSBNFUFST
   w "SHVNFOU
   -BCFMT
    4QFDJBM
   *OTUSVDUJPOT "1*
   %FTJHO
   (VJEFMJOFT IUUQTTXJGUPSHEPDVNFOUBUJPOBQJEFTJHOHVJEFMJOFT
10. ©2019 Wantedly, Inc.  'VOEBNFOUBMT
     /BNJOH
    w 1SPNPUF
    $MFBS
    6TBHF
    w 4USJWF
    GPS
    'MVFOU
    6TBHF
    w 6TF
    5FSNJOPMPHZ
    8FMM
     $POWFOUJPOT
    w (FOFSBM
    $POWFOUJPOT
    w 1BSBNFUFST
    w "SHVNFOU
    -BCFMT
     4QFDJBM
    *OTUSVDUJPOT "1*
    %FTJHO
    (VJEFMJOFT IUUQTTXJGUPSHEPDVNFOUBUJPOBQJEFTJHOHVJEFMJOFT Ұ൪ॏཁͳࢦ਑͕ॻ͔Ε͍ͯΔɻ
11. ©2019 Wantedly, Inc.  'VOEBNFOUBMT
     /BNJOH
    w 1SPNPUF
    $MFBS
    6TBHF
    w 4USJWF
    GPS
    'MVFOU
    6TBHF
    w 6TF
    5FSNJOPMPHZ
    8FMM
     $POWFOUJPOT
    w (FOFSBM
    $POWFOUJPOT
    w 1BSBNFUFST
    w "SHVNFOU
    -BCFMT
     4QFDJBM
    *OTUSVDUJPOT "1*
    %FTJHO
    (VJEFMJOFT IUUQTTXJGUPSHEPDVNFOUBUJPOBQJEFTJHOHVJEFMJOFT ໌֬͞Λ࣮ݱ͢ΔͨΊͷϧʔϧɺ
 ΑΓ۩ମతͳύλʔϯɺޠኮͷબͼํ
12. ©2019 Wantedly, Inc.  'VOEBNFOUBMT
     /BNJOH
    w 1SPNPUF
    $MFBS
    6TBHF
    w 4USJWF
    GPS
    'MVFOU
    6TBHF
    w 6TF
    5FSNJOPMPHZ
    8FMM
     $POWFOUJPOT
    w (FOFSBM
    $POWFOUJPOT
    w 1BSBNFUFST
    w "SHVNFOU
    -BCFMT
     4QFDJBM
    *OTUSVDUJPOT "1*
    %FTJHO
    (VJEFMJOFT IUUQTTXJGUPSHEPDVNFOUBUJPOBQJEFTJHOHVJEFMJOFT ΑΓ۩ମతͳέʔεͰͷ׳शɺ
 ύϥϝʔλ΍Ҿ਺ϥϕϧͷॻ͖ํ
13. ©2019 Wantedly, Inc.  'VOEBNFOUBMT
     /BNJOH
    w 1SPNPUF
    $MFBS
    6TBHF
    w 4USJWF
    GPS
    'MVFOU
    6TBHF
    w 6TF
    5FSNJOPMPHZ
    8FMM
     $POWFOUJPOT
    w (FOFSBM
    $POWFOUJPOT
    w 1BSBNFUFST
    w "SHVNFOU
    -BCFMT
     4QFDJBM
    *OTUSVDUJPOT "1*
    %FTJHO
    (VJEFMJOFT IUUQTTXJGUPSHEPDVNFOUBUJPOBQJEFTJHOHVJEFMJOFT ͦͷଞɺಛघͳέʔεʹ͍ͭͯ
14. ©2019 Wantedly, Inc.  'VOEBNFOUBMT
     /BNJOH
    w 1SPNPUF
    $MFBS
    6TBHF
    w 4USJWF
    GPS
    'MVFOU
    6TBHF
    w 6TF
    5FSNJOPMPHZ
    8FMM
     $POWFOUJPOT
    w (FOFSBM
    $POWFOUJPOT
    w 1BSBNFUFST
    w "SHVNFOU
    -BCFMT
     4QFDJBM
    *OTUSVDUJPOT "1*
    %FTJHO
    (VJEFMJOFT IUUQTTXJGUPSHEPDVNFOUBUJPOBQJEFTJHOHVJEFMJOFT ࠓ೔औΓ্͛Δ෦෼
15. ©2019 Wantedly, Inc. ϧʔϧͷదԠྫΛݟΔ J04
    ͰͷมߋΛओʹݟ͍ͯ͘
16. ©2019 Wantedly, Inc. ඞཁͷͳ͍ݴ༿Λ࡟Δ /BNJOH
    
    1SPNPUF
    $MFBS
    6TBHF
    
    l0NJU
    OFFEMFTT
    XPSETz
17. ©2019 Wantedly, Inc. UIActivity.perform #FGPSF - iOS 9 Activity()
18. ©2019 Wantedly, Inc. UIActivity.perform() "GUFS iOS 10 -
19. ©2019 Wantedly, Inc. UIActivity.perform() "GUFS UIActivity.performActivity() #FGPSF activityΛperform͢Δͷ͸ϨγʔόΛݟΕ͹ࣗ໌ - iOS 9 iOS 10 -
20. ©2019 Wantedly, Inc. UIResponder.pressesBegan(_: Set<UIPress>, withEvent: UIPressesEvent?) #FGPSF - iOS 9
21. ©2019 Wantedly, Inc. UIResponder.pressesBegan(_: Set<UIPress>, with: UIPressesEvent?) "GUFS iOS 10 -
22. ©2019 Wantedly, Inc. UIResponder.pressesBegan(_: Set<UIPress>, with: UIPressesEvent?) "GUFS UIResponder.pressesBegan(_: Set<UIPress>, withEvent: UIPressesEvent?) #FGPSF ܕΛݟΕ͹Θ͔Δݴ༿ iOS 10 - - iOS 9
23. ©2019 Wantedly, Inc. ܕ৘ใ͕ऑ͍΋ͷΛิ׬͢Δ /BNJOH
    
    1SPNPUF
    $MFBS
    6TBHF
    
    l$PNQFOTBUF
    GPS
    XFBL
    UZQF
    JOGPSNBUJPOz
24. ©2019 Wantedly, Inc. UITableView.rectForSection(_ section: Int) -> CGRect #FGPSF - iOS 9
25. ©2019 Wantedly, Inc. UITableView.rect(forSection: Int) -> CGRect "GUFS iOS 10 -
26. ©2019 Wantedly, Inc. UITableView.rect(forSection: Int) -> CGRect "GUFS UITableView.rectForSection(_ section: Int) -> CGRect #FGPSF ܕ͚ͩͰ͸໾ׂ͸෼͔Βͳ͍ iOS 10 - - iOS 9
27. ©2019 Wantedly, Inc. ࠷ॳͷҾ਺͕લஔࢺ۟ͷҰ෦Λͳ͢৔߹͸ɺ
 ͦΕʹҾ਺ϥϕϧΛ͚ͭΔ $POWFOUJPOT
    
    1BSBNFUFST
    
    l8IFO
    UIF
    pSTU
    BSHVNFOU
    GPSNT
    QBSU
    PG
    B
    QSFQPTJUJPOBM
    QISBTF
    HJWF
    JU
    BO
    BSHVNFOU
    MBCFMz
28. ©2019 Wantedly, Inc. UIView.point #FGPSF - iOS 9 Inside(_: CGPoint, withEvent: UIEvent?) -> Bool
29. ©2019 Wantedly, Inc. "GUFS UIView.point(inside: CGPoint, with: UIEvent?) -> Bool iOS 10 -
30. ©2019 Wantedly, Inc. "GUFS UIView.point(inside: CGPoint, with: UIEvent?) -> Bool UIView.pointInside(_: CGPoint, withEvent: UIEvent?) -> Bool #FGPSF લஔࢺ۟ΛϥϕϧʹؚΊΔ iOS 10 - - iOS 9
31. ©2019 Wantedly, Inc. UIViewController.willMove(toParentViewController: UIViewController?) "GUFS UIViewController.willMoveToParentViewController(_: UIViewController?) #FGPSF ໾ׂ͕͸͖ͬΓ͠ͳ͍৔߹͸໨తޠΛ໌ه
32. ©2019 Wantedly, Inc. ҰํͰɺ࠷ॳͷҾ਺͕จ๏తͳϑϨʔζʹ
 ؚ·ΕΔ৔߹͸ɺϥϕϧΛআ͘ $POWFOUJPOT
    
    1BSBNFUFST
    
    l0UIFSXJTF
    JG
    UIF
    pSTU
    BSHVNFOU
    GPSNT
    QBSU
    PG
    B
    HSBNNBUJDBM
    QISBTF
    PNJU
    JUT
    MBCFMz
33. ©2019 Wantedly, Inc. UIView.sendSubviewToBack(_: UIView) #FGPSF - iOS 9
34. ©2019 Wantedly, Inc. UIView.sendSubview(toBack: UIView) "GUFS iOS 10 -
35. ©2019 Wantedly, Inc. UIView.sendSubview(toBack: UIView) "GUFS UIView.sendSubviewToBack(_: UIView) #FGPSF toBack͸લஔࢺ͚۟ͩͲɺ
 Ҿ਺͸toBackͷ໨తޠͰ͸ͳ͍ iOS 10 - ? - iOS 9
36. ©2019 Wantedly, Inc. UIView.sendSubviewToBack(_: UIView) /PX ࠷ॳͷҾ਺͸sendͷ໨తޠsubviewͱͯ͠
 ϝιου໊ʹؚ·Ε͍ͯΔ iOS 12 ಉ͡΋ͷ
37. ©2019 Wantedly, Inc. ·ͱΊ
38. ©2019 Wantedly, Inc.  "1*ͷσβΠϯʹ͍ͭͯ໎ͬͨ࣌ɺ
 ·ͣ͸(VJEFMJOF
    
    $PDPB΍ελϯμʔυϥΠϒϥϦ͸࠷ߴͷ͓खຊ ·ͱΊ
39. ©2019 Wantedly, Inc.  "1*ͷσβΠϯʹ͍ͭͯ໎ͬͨ࣌ɺ
 ·ͣ͸(VJEFMJOF
    
    $PDPB΍ελϯμʔυϥΠϒϥϦ͸࠷ߴͷ͓खຊ ·ͱΊ
40. ©2019 Wantedly, Inc. "QQFOEJY
41. ©2019 Wantedly, Inc. 
    "1*
    %FTJHO
    (VJEFMJOFT
    IUUQTTXJGUPSH EPDVNFOUBUJPOBQJEFTJHOHVJEFMJOFT
    
    J04
    
    "1*
    %J⒎T
    IUUQTEFWFMPQFSBQQMFDPNMJCSBSZ BSDIJWFSFMFBTFOPUFT(FOFSBMJ04"1*%J⒎T4XJGU6*,JUIUNM "QQFOEJY
42. ©2019 Wantedly, Inc. ຖिՐ༵೔
    J04
    /JHIU
    Λ։࠵͍ͯ͠·͢ 13 IUUQTHJUIVCDPNXBOUFEMZJPT@OJHIU JPT@OJHIU ւ֎ͷϒϩάͳͲ࠷৽ͷ৘ใΛΧδϡΞϧʹڞ༗͋͠͏ձͰ͢ɻ