Swift

When to use ' as? ' and ' as 'Let's continue to apply write-point code to our illusion of uikit. Suppose you need to play (show) a new modal view controller to the phone's screen (for example by using the Presentviewcontroller (_, Animated:,

Since 04, when Apple launched Swift, it was very quickly welcomed by many developers, but in actual development, there may be many third-party libraries did not implement the code of the swift, then need swift and OC of the mixed skills:1.

The interception of strings in Swift is much more complex than OC, the main reason may be OC's Nsrange method of creating the parameter type int, and Swift is strict with the type, int cannot create a range as a parameter, This will use the

This article is divided into two parts: I. Any and anyobject in Swift, Typealias and generic interfaces in Swift I. Any and anyobject in SwiftIn Swift, Anyobject can represent any instance of class type, any can represent any type,

The first step:Right-click main.storyboard--delete--move to TrashLaunchscreenStep TwoClick on the project name, which is the top level directoryThe General tab appears on the rightSet the main interface in the deployment info group to NULLSet the

Yesterday we wrote about using the system cell how to create TableView, today we subdivide, is the different style of cell, how we write code. Create a cell yourself, inherit from UITableViewCell we'll see how the code in the cell is written.Import

FuncXdlog (Message:T, File:String=__file__, FuncName: String = __function__, linenum: Int = __line__) { #ifDEBUG1.Processing the fileLetFileName = (fileAsNSString).Lastpathcomponent2.Print contentPrint("[\(FileName)]:[\(FuncName)]

This article is divided into two parts: First, methods in Swift are nested Ii. Namespaces in Swift first, methods in Swift are nestedIn Swift we can let methods nest methods, such as:func Appendquery (Var url:string,

This article is divided into three parts: One, the Struct mutable method Two, the plural group (Tuple) use three, the autoclosure use four, Optional Chain use Mutable method of StructDirectly on the code:struct User { var

This article is divided into two parts: One, the basic use of the curry of the two, the use of curry-based scenarios First, the basic use of curryCurry (currying): That is, the method that accepts multiple parameters is

var studentlist: [String] = [" Zhang San "," John Doe ", " Harry "];// array insertionstudentlist. Insert (" Liu Bei ", Atindex: 0)// array append, only one element can be appended per callStudentlist. Append (" Zhao Yun ");// array append

Object-c has been serving Apple's iOS app development language for many years, and in 2014 Apple introduced the new programming language Swift, a more efficient and secure slogan that once again attracted a large number of non-iOS developers to

original articles, welcome reprint. Reprint Please specify: Dongsheng's blog what is design mode. A design pattern is a solution to a specific problem in a specific scenario, and these solutions are summed up through repeated demonstrations and

original articles, welcome reprint. Reprint Please specify: Dongsheng's blog Notification ( Notification ) mechanism is based on the viewer ( Observer ) mode is also called publishing / Subscription ( Publish/subscribe ) mode, is MVC ( Model - View

original articles, welcome reprint. Reprint Please specify: Dongsheng's blog Swift error handling mode, in swift1.x and the Swift 2.0 are two different modes. Swift 1.x Code error handling mode uses Cocoa Frame error Handling mode, up to now

Rxswift Official Document Structure Introduction: Subjects Transforming observables Filtering observables Combining observables Error handing Operators Observable Utility Operators Conditional and Boolean

Now learn to do the first swift version of Jigsaw puzzle game DemoRegular mode, swap mode you choose,Using the petals of the API, a variety of sister ~& #128516;& #128516; Let you see not enough at onceLibraries used: Alamofire Kingfisher

original articles, welcome reprint. Reprint Please specify: Dongsheng's blog You can use the constructor proxy in a constructor to help complete some of the construction work. Class constructor proxies are divided into horizontal and upward proxies,

original articles, welcome reprint. Reprint Please specify: Dongsheng's blog Optional type:Let's start by looking at the following code:var n1:int = 10n1 = nil//Compile error let Str:string = nil//Compile errorInt and the String type not acceptable

original articles, welcome reprint. Reprint Please specify: Dongsheng's blog Swift the properties in are divided into storage properties and computed properties, and the stored properties are objective-c the calculated property does not store data