Swift

http://tieba.baidu.com/p/3155277323In swift, type checking is implemented using the IS and as operators. The IS operator is used to check if an instance is of a particular type and returns False if true. The as operator is used to transform an

1, optional type.1. Escape special characters (null character), \ \ (backslash), \ t (horizontal tab), \ n (newline character), \ r (carriage return), \ "(double quotation mark), \ ' (single quotation mark).2. Single-byte Unicode scalar, written as \

Http://joeyio.com/ios/2014/06/04/swift---/The swift language uses VAR to define variables, but unlike other languages, Swift does not automatically assign an initial value to a variable, which means that the variable does not have a default value,

http://blog.csdn.net/powerlly/article/details/29351103Swift Development Learning: the initial ChapterAboutApple is in WWDC2014 (Apple Worldwide Developers Conference. June 2-6, San Francisco) publishes the new programming language--swift. Here does

http://blog.csdn.net/kuloveyouwei/article/details/30511303At the end of this WWDC global developer conference, Apple has unveiled a new swift programming language and a new version of Xcode for developers, which Apple says is "fast, modern, secure,

------------------1. The simplest methodDrag and drop, this will not be explained more. Drag directly to another view controller, select Show, and it's OK.2. Using the Segue method (This is mainly the value of Method 1)Connect the line, click the

1. Create a new view file, how do I connect the control to code with Interface Builder?2. How can I adjust the distance between controls?2. Manually add the button and action to the viewClass Ratingcontrol: UIView { //mark:initialization Required

http://blog.csdn.net/kuloveyouwei/article/details/359885931. Basic operatorsIn fact, no matter what the language, for the basic operators, are similar, here I say the difference between the swift and other language places. For example, the scope

Detailed definitionFunction Parameter NamesFunction parameters has both an external parameter name and a local parameter name. An external parameter name was used to label arguments passed to a function call. A local parameter name is used in the

1.Swift is a strongly typed language and cannot give a variable a value other than its own data type;2. Declare the variable using the var keyword, declaring the constant using the Let keyword;3. When declaring a variable or constant without

A view displays content, whereas a control is used to modify it in some. A control ( UIControl ) is a subclass of. Views can does not have an UIView action. But Gesture recognizers can is used to add actions for the views.An image view isn't a

The use of Swift's functions has changed a lot in swift2./***param: personName 参数*returns: String为返回值*/func sayHello(personName: String) -> String { return"Hello " + personName;}/*swift2中函数的调用必须要使用标签或者别名，没有别名第一个标签不带*/func add(a: Int, b: Int) ->

Watch developing IOS 8 Apps with Swift see some more useful points to record:1. Pass the function as a parameter. For example:Write a function with a sum of two numbers:performoperation (multiply)func Performoperation (Operation:

To use Swift in Objective-c, the steps are similar:1. First create a OBJECTIVE-C project:Paste_image.png2. Add a swift class file:Paste_image.png3, click Next, Pop Up a dialog box, select YesPaste_image.png4. Generate a Yourproject-bridging-header.h

Class of the demand Agent1. Define an agreement, generally with the class name plus delegate All agents must be implemented Protocol Visitorloginviewdelegate:nsobjectprotocol {Func visitorregisterbuttonclicked ()Func visitorloginbuttonclicked

Reference: http://blog.sina.com.cn/s/blog_8d1bc23f0102v5tl.htmlMethods of using the OC class in Swift1. Create a oc.h file2. Add the header file for the OC class that needs to be poured3.Bulid Settings Search Bri, added: $ (srcroot)/$

Import Uikitclass Viewcontroller:uiviewcontroller { @IBOutlet var Button:uibutton? var alertview:uialertview? Override Func Viewdidload () { super.viewdidload () //Do any additional setup after loading the view, typically

About SwiftSwift is a new programming language for iOS and OS X applications, built on the best of C and objective-c, without the limitations of C compatibility. Swift employs a safe mode design and adds modern features that make programming simpler,

Array: brackets [] means that the array values are separated by commas           1, and if the array is declared as a constant, it cannot be modified by itself, and the values in the array cannot be modified           2, specifying the type of array,

declaring variables and constants//使用var声明一个变量var"Hello, playground""Hello world";//使用let声明一个常量let"我是帅哥""我不是帅哥"//这句话会报错let"我是帅哥"; //声明一个常量，类型自动推断为String类型var20; //声明一个变量指定好类型Output