狠狠撸

Swift 楔泻芯谢邪
小械褉谐械泄袩褉芯薪懈薪, 袗谢械泻褋邪薪写褉袟懈屑懈薪
Empatika

袩谢邪薪
鈥� Swift - 袩械褉械谐褉褍蟹泻邪芯锌械褉邪褌芯褉芯胁
鈥� iOS8 - App Groups
鈥� iOS8 - Extensions
鈥� iOS8 - Handoff

袩械褉械谐褉褍蟹泻邪芯锌械褉邪褌芯褉芯胁

<袦芯写懈褎懈泻邪褌芯褉> operator <芯锌械褉邪褑懈褟> {
<小胁芯泄褋褌胁邪>
}

袦芯写懈褎懈泻邪褌芯褉褘芯锌械褉邪褑懈泄
infix
袦芯写懈褎懈泻邪褌芯褉懈薪褎懈泻褋芯锌械褉邪褑懈懈
袙褘锌芯谢薪褟械褌褋褟写谢褟写胁褍褏芯斜褗械泻褌芯胁
袩褉懈屑械褉: a + b
prefix
袦芯写懈褎懈泻邪褌芯褉锌褉械褎懈泻褋芯胁芯锌械褉邪褑懈懈
袙褘锌芯谢薪褟械褌褋褟写谢褟芯写薪芯谐芯芯斜褗械泻褌邪
袩褉懈屑械褉: !flag
postfix
袦芯写懈褎懈泻邪褌芯褉锌芯褋褌褎懈泻褋薪芯泄芯锌械褉邪褑懈懈
袙褘锌芯谢薪褟械褌褋褟写谢褟芯写薪芯谐芯芯斜褗械泻褌邪
袩褉懈屑械褉: i++

小胁芯泄褋褌胁邪芯锌械褉邪褑懈泄
Precedence (UInt8)
袩褉懈芯褉懈褌械褌芯锌械褉邪褑懈懈
效械屑斜芯谢褜褕械, 褌械屑锌褉懈芯褉懈褌械褌薪械械
效懈褋谢邪芯褌 0 写芯 255
袘邪蟹芯胁芯械蟹薪邪褔械薪懈械 - 100
Associativity
袗褋褋芯褑懈邪褌懈胁薪芯褋褌褜芯锌械褉邪褑懈懈
袦芯卸械褌斜褘褌褜 left, right, none
Assignment
袩褉懈褋胁芯械薪懈械
袠褋锌芯谢褜蟹褍械褌褋褟写谢褟芯锌械褉邪褑懈泄褎芯褉屑邪褌邪 =
孝芯谢褜泻芯写谢褟 infix 芯锌械褉邪褑懈泄

袩褉懈芯褉懈褌械褌
infix operator >+ {
precedence 40
}
func >+ (left: Double, right: Double) -> Double {
return left + right
}
infix operator >* {
precedence 30
}
func >* (left: Double, right: Double) -> Double {
return left * right
}
let value = 10 >+ 5 >* 2 // 30

袗褋褋芯褑懈邪褌懈胁薪芯褋褌褜
infix operator >- {
associativity left
}
func >- (left: Double, right: Double) -> Double {
return left - right
}
infix operator >/ {
associativity left
}
func >/ (left: Double, right: Double) -> Double {
return left / right
}
let nValue = 10 >- 4 >/ 2 // 3
let anotherValue = 10 >/ 2 >- 4 // 1

infix operator **= {
precedence 120
assignment
}
func **= (inout left: Double, right: Double) -> Double {
left = left * right
return left
}
infix operator ** {
associativity left
}
func ** (left: Double, right: Double) -> Double {
return left * right
}
infix operator +++ {
associativity left
}
func +++ (left: Double, right: Double) -> Double {
return left + right
}
var x = 3 +++ 4 ** 5
let y = x **= 2 ** 4
y
x

infix operator **= {
precedence 120
assignment
}
func **= (inout left: Double, right: Double) -> Double {
left = left * right
return left
}
infix operator ** {
associativity left
}
func ** (left: Double, right: Double) -> Double {
return left * right
}
infix operator +++ {
associativity left
}
func +++ (left: Double, right: Double) -> Double {
return left + right
}
var x = 3 +++ 4 ** 5 // 35.0
let y = x **= 2 ** 4
y // 280.0
x // 70

袩械褉械谐褉褍蟹泻邪芯锌械褉邪褌芯褉芯胁写谢褟泻谢邪褋褋芯胁

struct Vector2D {
var x = 0.0, y = 0.0
}

func + (left: Vector2D, right: Vector2D) -> Vector2D {
return Vector2D(x: left.x + right.x, y: left.y + right.y)
}
let vectorSum1 = Vector2D(x: 1.0, y: 2.0)
let vectorSum2 = Vector2D(x: 0.5, y: -1.0)
let vectorSum3 = vectorSum1 + vectorSum2 // {x 1.5, t 1.0}

prefix func -(vector: Vector2D) -> Vector2D {
return Vector2D(x: -vector.x, y: -vector.y)
}
prefix func +(vector: Vector2D) -> Double {
return vector.x + vector.y
}
let minusVector = -vectorSum3 // {x -1.5, y -1.0}
let result = +vectorSum3 // 2.5

func += (inout left: Vector2D, right: Vector2D) {
left = left + right
}
var newVector = Vector2D(x: 1.0, y: 1.0) // {x 1.0, y 1.0}
newVector += Vector2D(x: 1.0, y: 2.0) // {x 2.0, y 3.0}
postfix func ++ (inout vector: Vector2D) -> Vector2D {
vector += Vector2D(x: 1.0, y: 1.0)
return vector
}
newVector++ // {x 3.0, y 4.0}
let updatedNewVector = newVector++ // {x 4.0, y 5.0}

infix operator ^^ {}
func ^^ (left: Double, right: Double) -> Double {
return pow(left, right)
}
5 ^^ 2 // 25.0
3 ^^ 5 // 243.0

App
extension
Containing Host app
app
Request
Response

App
extension
Host app
Containing
app
Request
Response
Open URL
Read/Write
Shared
resources
Read/Write

import NotificationCenter
class TodayViewController: UIViewController, NCWidgetProviding {
override func viewDidLoad() {
super.viewDidLoad()
self.preferredContentSize = CGSizeMake(320, 100)
}
//MARK: - NCWidgetProviding
func widgetPerformUpdateWithCompletionHandler(completionHandler:
(NCUpdateResult -> Void)!) {
// update widget and call handler: .Failed, .NoData, .NewData
completionHandler(NCUpdateResult.NewData)
}
func widgetMarginInsetsForProposedMarginInsets(
defaultMarginInsets: UIEdgeInsets) -> UIEdgeInsets {
return UIEdgeInsetsMake(8, 16, 8, 16)
}
}

func broadcastActivity() {
var activity = NSUserActivity(activityType: "com.empatika.activity1")
activity.addUserInfoEntriesFromDictionary([
"flight_id": self.currentFlight.flightId
])
activity.title = self.currentFlight.name
activity.delegate = self
activity.setNeedsSave(true)
activity.becomeCurrent()
}
// implement NSUserActivityDelegate
func userActivityWillSave(activity: NSUserActivity) {
activity.addUserInfoEntriesFromDictionary([
"flight_id": self.currentFlight.flightId
])
}
func userActivityWasContinued(activity: NSUserActivity) {
//another device picker up the activity!
}

// AppDelegate
func application(application: UIApplication,
continueUserActivity userActivity: NSUserActivity,
restorationHandler: [AnyObject] -> Void) -> Bool {
var flightIdOpt = userActivity.userInfo[鈥渇light_id"]
as? String
if let flightId = flightIdOpt {
//load flight locally or remotely and show
}
//optional. if restoration is set up
restorationHandler(self.viewControllers)
return true //or false if can鈥檛
}

袙芯锌褉芯褋褘
swift@empatika.com
袛懈锌谢芯屑褘

狠狠撸

Swift School #4

More Related Content

What's hot (20)

Viewers also liked (8)

More from Sergey Pronin (8)

Swift School #4