Swift 2.2 の新機能

4XJGUͷ৽ػೳ େݪҰً

ࣗݾ঺հ w ඇܞଳ ήʔϜձࣾͰ ඇήʔϜ J04ΞϓϦΛ࡞ͬͯΔ ΤϯδχΞ w 4XJGUྐྵ͸ϲ݄ऑ w
5XJUUFS!PSDIFMZ w 'BDFCPPLLB[VLJPIBSB w 2JJUBPSDIFMZ

΄ͱΜͲͷ ΩʔϫʔυΛҾ਺ϥϕϧͰ ࢖͑ΔΑ͏ʹ͢Δ

Ҿ਺ϥϕϧ indexOf(value, in: collection) Ҿ਺ͷ໾ׂΛ໌֬ʹ͠ ՄಡੑΛ޲্ͤ͞Δ

Ͱ΋ JO͸Ωʔϫʔυ

let names = [ "C", "Objective-C", "Swift" ] for name
in names { print("Hello \(name)!") }

࢖͑ͳ͍ʂ

4XJGUͰ͸શͯͷΩʔϫʔυ͕ Ҿ਺ϥϕϧͱͯ͠ ࢖͑ΔΑ͏ʹͳΓ·ͨ͠ ͨͩ͠MFU WBS JOPVU͸আ͘

λϓϧൺֱԋࢉࢠ

λϓϧΛ࢖͑͹Ϋϥεɺ ߏ଄ମΛఆٛ͢Δ͜ͱͳ͘ ෳ਺ͷཁૉΛ࣋ͭσʔλΛѻ͑Δ let rhythm = (3, 3, 7)

ؔ਺͔Βෳ਺ͷ஋Λ ฦ͢৔߹౳ʹศར func getRhythm() -> (Int, Int, Int) { return
(3, 3, 7) } let rhythm = getRhythm()

͔͠͠ ൺֱԋࢉࢠ͕ͳ͍

let rhythm = getRhythm() if rhythm == (5, 7, 5)
{ print("haiku") } ͜ͷ͸ΤϥʔʹͳΔ

4XJGUͰλϓϧʹ͕ ࢖͑ΔΑ͏ʹͳͬͨ ଞʹ ౳΋

Ҿ਺ϥϕϧ෇͖ͷ ؔ਺ͷ໊લ

extension UIView { func insertSubview(view: UIView, at index: Int) func
insertSubview(view: UIView, aboveSubview siblingSubview: UIView) func insertSubview(view: UIView, belowSubview siblingSubview: UIView) } 4XJGUͰ͸໊લ͸ಉ͡ͰҾ਺ ϥϕϧ͕ҧ͏ؔ਺͕Α͋͘Δ

͔͠͠ ݺͼग़͢Ҏ֎ͷ໨తͰ ͜ͷؔ਺Λࢦఆ͢Δ৔߹ɺ Ҿ਺ϥϕϧΛ༩͑ΒΕͳ͍ͷͰ ᐆດʹͳΔ let someView: UIView = ...
let fn = someView.insertSubview

Ͳͷ JOTFSU4VC7JFX

4XJGUͰ͸Ҿ਺ϥϕϧΛ ࢦఆͰ͖ΔΑ͏ʹͳͬͨ MFUGOTPNF7JFXJOTFSU4VCWJFX @BU   MFUGOTPNF7JFXJOTFSU4VCWJFX @BCPWF4VCWJFX

ηϨΫλͷࢦఆํ๏

class NSNotificationCenter { func addObserver(_ observer: AnyObject, selector aSelector: Selector,
name aName: String?, object anObject: AnyObject?) } 4XJGUͰ͸ϝιουΛࢦఆ͢Δ ͨΊͷηϨΫλͱ͍͏΋ͷΛ ࢖͏͜ͱ͕͋Δ

ྫϘϦϡʔϜ͕มԽͨ͠Β TFMG ଟ෼"QQ%FMFHBUF ͷ WPMVNF$IBOHFEϝιου͕ ݺ͹ΕΔΑ͏ʹొ࿥͢Δ NotificationCenter.defaultCenter().addObserver(self, selector: "volumeChanged:", name:
"AVSystemController_SystemVolumeDidChangeNotification", object: nil) ηϨΫλʹจࣈྻΛ࢖ͬͯ ϝιουΛࢦఆ͍ͯ͠Δ

ίϯύΠϥ͸จࣈྻͷ಺༰Λ νΣοΫ͠ͳ͍ ଘࡏ͠ͳ͍ϝιουͩͱ ࣮ߦ࣌Τϥʔ͕ى͖Δʂ

͜Μͳͷόάͷݩ Ͱ͢ΑͶ

4XJGUͰ͸͜͏ॻ͚·͢ ଘࡏ͠ͳ͍ϝιουΛࢦఆ͢Δͱ ίϯύΠϧΤϥʔʹͳΓ ࣮ߦ࣌ΤϥʔΛ๷͛·͢ NotificationCenter.defaultCenter().addObserver(self, selector: #selector(AppDelegate.volumeChanged(_:)), name: "AVSystemController_SystemVolumeDidChangeNotification", object:
nil)

͋Γ͕ͱ͏ ͍͟͝·ͨ͠

Swift 2.2 の新機能

Swift 2.2 の新機能

Kazuki Ohara

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Transcript

4XJGUͷ৽ػೳ େݪҰً

ࣗݾ঺հ w ඇܞଳ ήʔϜձࣾͰ ඇήʔϜ J04ΞϓϦΛ࡞ͬͯΔ ΤϯδχΞ w 4XJGUྐྵ͸ϲ݄ऑ w

΄ͱΜͲͷ ΩʔϫʔυΛҾ਺ϥϕϧͰ ࢖͑ΔΑ͏ʹ͢Δ

Ҿ਺ϥϕϧ indexOf(value, in: collection) Ҿ਺ͷ໾ׂΛ໌֬ʹ͠ ՄಡੑΛ޲্ͤ͞Δ

Ͱ΋ JO͸Ωʔϫʔυ

let names = [ "C", "Objective-C", "Swift" ] for name

࢖͑ͳ͍ʂ

4XJGUͰ͸શͯͷΩʔϫʔυ͕ Ҿ਺ϥϕϧͱͯ͠ ࢖͑ΔΑ͏ʹͳΓ·ͨ͠ ͨͩ͠MFU WBS JOPVU͸আ͘

λϓϧൺֱԋࢉࢠ

λϓϧΛ࢖͑͹Ϋϥεɺ ߏ଄ମΛఆٛ͢Δ͜ͱͳ͘ ෳ਺ͷཁૉΛ࣋ͭσʔλΛѻ͑Δ let rhythm = (3, 3, 7)

ؔ਺͔Βෳ਺ͷ஋Λ ฦ͢৔߹౳ʹศར func getRhythm() -> (Int, Int, Int) { return

͔͠͠ ൺֱԋࢉࢠ͕ͳ͍

let rhythm = getRhythm() if rhythm == (5, 7, 5)

4XJGUͰλϓϧʹ͕ ࢖͑ΔΑ͏ʹͳͬͨ ଞʹ ౳΋

Ҿ਺ϥϕϧ෇͖ͷ ؔ਺ͷ໊લ

extension UIView { func insertSubview(view: UIView, at index: Int) func

͔͠͠ ݺͼग़͢Ҏ֎ͷ໨తͰ ͜ͷؔ਺Λࢦఆ͢Δ৔߹ɺ Ҿ਺ϥϕϧΛ༩͑ΒΕͳ͍ͷͰ ᐆດʹͳΔ let someView: UIView = ...

Ͳͷ JOTFSU4VC7JFX

4XJGUͰ͸Ҿ਺ϥϕϧΛ ࢦఆͰ͖ΔΑ͏ʹͳͬͨ MFUGOTPNF7JFXJOTFSU4VCWJFX @BU   MFUGOTPNF7JFXJOTFSU4VCWJFX @BCPWF4VCWJFX

ηϨΫλͷࢦఆํ๏

class NSNotificationCenter { func addObserver(_ observer: AnyObject, selector aSelector: Selector,

ྫϘϦϡʔϜ͕มԽͨ͠Β TFMG ଟ෼"QQ%FMFHBUF ͷ WPMVNF$IBOHFEϝιου͕ ݺ͹ΕΔΑ͏ʹొ࿥͢Δ NotificationCenter.defaultCenter().addObserver(self, selector: "volumeChanged:", name:

ίϯύΠϥ͸จࣈྻͷ಺༰Λ νΣοΫ͠ͳ͍ ଘࡏ͠ͳ͍ϝιουͩͱ ࣮ߦ࣌Τϥʔ͕ى͖Δʂ

͜Μͳͷόάͷݩ Ͱ͢ΑͶ

4XJGUͰ͸͜͏ॻ͚·͢ ଘࡏ͠ͳ͍ϝιουΛࢦఆ͢Δͱ ίϯύΠϧΤϥʔʹͳΓ ࣮ߦ࣌ΤϥʔΛ๷͛·͢ NotificationCenter.defaultCenter().addObserver(self, selector: #selector(AppDelegate.volumeChanged(_:)), name: "AVSystemController_SystemVolumeDidChangeNotification", object:

͋Γ͕ͱ͏ ͍͟͝·ͨ͠