coursera swift programming

Synchronous Post Mode1 //MARK:-Synchronous Post Mode2 func synchronouspost ()3 {4 //Create a Nsurl object5var url:nsurl! = Nsurl (string:"http://m.weather.com.cn/data/101010100.html")6 7 //Create Request Object8var request:nsmutableurlrequest = nsmutableurlrequest (Url:url, CachePolicy: Nsurlrequestcachepolicy.useprotocolcachepolicy, timeOutInterval:Ten)9 TenRequest. HttpMethod ="POST"//Set Request mode to post, default to get One Avar str:string

Cabasicanimation Animation1 //cabasicanimation-Opacity2 @IBAction func cabopacity ()3 {4Let animation = Cabasicanimation (keypath:"Opacity")5 6animation!. Fromvalue =1.07animation!. Tovalue =0.08Animation.duration =3.09Self.testImageView.layer.addAnimation (animation, Forkey:"image-opacity")TenSelf.testimageview.alpha=0.0; One } A - //turn on the Clip Subview property - @IBAction func cabexpend () the { - //from small to lower (if the mode attribute is ch

user interface or written any lines of code, the Simulator shows a blank screen. To terminate the app, simply hits the "Stop" button in the toolbar.Try to select another simulator and run the app. Just play around with it so you'll get used to the Xcode development environment.A blank screen without any information? This is normal. When we do not implement user interface or do not write any line of code, the simulator will live a blank screen. If you want to end the app, simply click the "Stop"

Swift programming language entry objects and Classes You can use class to create a class. An Attribute declaration is declared as a constant or variable in the class, except in the context of the class. The same is true for methods and functions. Class Shape {var numberOfSides = 0 func simpleDescription ()-> String {return "A shape with (numberOfSides) sides ."}} Exercise Use "let" to add a constant attribu

, amount:int) { = operation = amount } func Execute (calculator:calculator) { operation (Calculator) (amount) } }In this class I define a type alias named Operationtype, as you can see from the definition that an instance of the Operationtype type is a closure that accepts an instance of a calculator type and returns a type of INT- > void Closure (the type of this closure is the type of each method in Calculator);Amount the value of the parameter to perform that

Study from the second quarter of the wavelet said Swift network programming (introductory article)Tool: xcode6.4First add and set three labels in Main.storyborad to do a simple interface display:1 Import UIKit2 3 //1, construct a constructs4 structWeather {5var city:string?6var weather:string?7var temp:string?8}//why not practical class, because the structure of the initialization is convenient, do not writ

The article comes from "functional programing in Swift", this series is just a summary of some of the contents of the post-viewingWrapping Core ImageIn the previous article, we introduced higher-order functions and demonstrated how functions are passed as parameters to other functions. In this chapter, we will show how to use higher-order functions to function-wrap an existing object-oriented API.The Core Image is a very powerful framework for graphic

) theUiview.setanimationduration (2.0)//Set Animation time -Self.testimageview.transform=cgaffinetransformrotate (Self.testImageView.transform, CGFloat (-m_pi/2)) $ uiview.commitanimations () the the //independent rotation, rotated at the initial position the //self.testimageview.transform=cgaffinetransformmakerotation (CGFloat (M_PI/6)) the } - in //catransition Animations-zooming the @IBAction func cascale () the { About the //Continuous Scali

flipanimation ()Panax Notoginseng { - uiview.beginanimations (Nil, Context:nil) theUiview.setanimationduration (1.0)//Set Animation time +Uiview.setanimationtransition (Uiviewanimationtransition.flipfromleft, Forview:testimageview, cache:true) A //uiview.setanimationtransition (Uiviewanimationtransition.flipfromright, Forview:testimageview, cache:true) the uiview.commitanimations () +}Create two views1 //over-animation add two views2Redview = UIView (Frame:cgrectmake ( $, -, -, -))

Synchronous get Mode1 //MARK:-Synchronous Get Mode2 func synchronousget ()3 {4 //Create a Nsurl object5var url:nsurl! = Nsurl (string:"http://m.weather.com.cn/data/101010100.html")6 7 //Create Request Object8var urlrequest:nsurlrequest = nsurlrequest (Url:url, CachePolicy:NSURLRequestCachePolicy.UseProtocolCachePolicy, timeOutInterval:Ten)9 Ten //Response Object Onevar response:nsurlresponse? A - //Error Object -var error:nserror?

, the subscript index value may be too small or too large.You need to pass a value to the function. However, illegal values can cause the function to not execute properly.An optional value is now nil. However, the subsequent code execution requires a non-nil value.Please refer to the attached scripts and functions.Attention:Assertions can cause your app to terminate execution, so you should design your code carefully so that illegal conditions do not appear. However, there are times when illegal