Swift

: Playground-noun:a place where people can playimport uikitvar str = "Hello, Playground"//Nil aggregation operation can be said to be an optional value out of the//its The embodiment is "??" eg://a?? b -A! = nil? a!: Bvar

Learn to write Swift, here's a simple list of swift usage// traditional for-loop notation for 0;i; i++ { print (i)}//... The value of I is 0~9 and does not containthe0for. { print (i)}//... i has a value of 0 to 0... Ten { print

: Playground-noun:a place where people can playimport uikit//determine the interval var score = 90switch Score {case 0:print ("Yo U got an egg! ") Case 1.. is a course for introducing operators") Default:print (" is other course")}// where (6) var

original articles, welcome reprint. Reprint Please specify: Dongsheng's blog  used in the definition of a classFinalkeyword to declare classes, properties, methods, and subscripts. Finalthe declared class cannot be inherited,Finaldeclared properties,

Swift's reflection mechanism is implemented based on a struct called Mirror, which has the following properties and methods inside it:Let Children:children //child nodes of the object. DisplayStyle:Mirror.DisplayStyle? object's presentation

Xcode7.1 use Cocoapods to install the third-party network library under Alamofire--swiftThe alamofire previously searched online was version 1.3. So the installation to Xcode7.1 will be error, so the Alamofire3.1 version with Cocoapods installation.

Nsurlsession/*Create a session--create a task--start task--processing callback*/Http://www.douban.com/j/app/radio/channelsClass Viewcontroller:uiviewcontroller {Override Func Viewdidload () {Super.viewdidload ()Let session =

One, add a cocoa touch class to the new Swift single-page program for storing data and interactingImport UIKitCreating a Local Data modelClass Todomodel:nsobject {var id:stringvar image:stringvar title:stringvar date:nsdateInit

How to use UilabelLet Label:uilabel = UILabel (Frame:cgrect (x:0, y:100, Width:view.frame.size.width, height:100))Label.text = "Everybody loves Uncle Meng old, do not take medicine every day"Label.textalignment =

//Oneviewcontroller.swifttab//Created by Su on 15/12/7.Copyright©2015 year Tian. All rights reserved.//Import UIKitLet ID = "cell"Class Oneviewcontroller:uiviewcontroller,uitableviewdelegate, Uitableviewdatasource {Let

//Viewcontroller.swiftAlertview//Created by Su on 15/12/7.Copyright©2015 year Tian. All rights reserved.//Import UIKitClass Viewcontroller:uiviewcontroller {var controller:uialertcontroller!Override Func Viewdidload () {1. Forcing the optional value

The swift.org Blog WelcomeThe swift.org Blog welcome Projects Swift Package Manager Core Libraries swift.org Websitehttps://swift.org/blog/welcome/The swift.org Blog WelcomeDecember 3, 2015Welcome to the blog on swift.org! Today we launched the Open

Original Address link: http://blog.csdn.net/duanyipeng/article/details/32338575Apple Official document: The Swift programming LanguageThe Protocols and Extensions section practice requires that you define a enumeration enumeration type yourself and

Let String---nsstringvar String---nsmutablestringArrayvar array = ["A", "B", "C"]-An array can store only certain types of data-The stored data is not necessarily an object of a class, it can be the underlying data typeDictionaryvar dictionary = [1:

Let's take the right button for example, the left method is similarMethod One, direct custom text Let Item=uibarbuttonitem (title: "Share", Style:uibarbuttonitemstyle. Plain, target: Self , action: nil) Self. Navigationitem.

1 Import Foundation2 3 classhi{4 func Sayhi () {5Print"HI Jinpanpang")6 }7 }8 9 classHello:hi {Ten var _name:string One A //Parametric Constructors - Init (name:string) { -Self._name =name thePrint"init Hello") - } - -

1 Import Foundation2 3 //functions are declared to implement4 func SayHello (name) {5Print"Hello \ (name)")6 }7 8 //function Call9SayHello ("Hey, I'm going.")Ten One A //support for multiple return values - //multiple return value functions -Func

If you do not intentionally indicate that the type initial value is any typeEnum weather: Int{Case's getting colder.Case Wear Clothes}HashValue indicates the subscript to be takenRawValue represents the initial value obtainedPrint (weather.) It's

Common wording:Dispatch_async (Dispatch_get_global_queue (dispatch_queue_priority_default, 0)) {dosomething ()///time-consuming Operation Dispatch_async (Dispatch_get_main_queue ()) {UpdateUI ()//update main thread}}If you run a series of tasks, you

Closures are functional self-contained modules that can be passed and used in code. Closures in Swift are similar to those in the blocks in C and Objective-c and Lambdas in other programming languages.There are three main types of closures:1. A