Swift

Restricting access to code blocks, modules, and abstractions are accomplished through access control. Classes, structs, and enumerations can be accessed through the access control mechanism based on their own properties, methods, initialization

Adapted to a variety of screen sizes, IOS 6 introduced the concept of automatic layout (auto Layout), through the use of various Constraint (constraints) to achieve a page adaptive elastic layout. (For more information, see my original article:

Cifilter provides a wide variety of filters, where ciqrcodegenerator can be used to generate two-dimensional code. The following example shows how to generate a two-dimensional code picture of a string (a link is also a string), while also

To refresh the table data, pull up the new data, there are many Third-party implementation classes on the Web. And if only need to realize the Drop-down refresh data, then the use of Uirefreshcontrol is sufficient, simple and useful.

First, the introduction Swift provides 3 types of collections, array data types, set collection types, and dictionary dictionary types. Array is used to hold a set of ordered data, the data angle is incremented from 0; set is used to hold a set of

Before writing this blog, some words have to mention, only when the hair is angry ...This afternoon for a alamofire to get data and update tableview problem, check the afternoon of Baidu (360 is the same as hell), unexpectedly did not have a simple

blockoperation////viewcontroller.swift Import uikitclass viewcontroller:uiviewcontroller {@IBOutlet weak var imag e1:uiimageview! @IBOutlet weak var image2:uiimageview! @IBOutlet weak var image3:uiimageview! @IBOutlet weak var image4:

Last blog we talked about the physical storage structure adjacency matrix and adjacency linked list, and then gives the depth-first search and breadth-first search of graph. This blog post on the basis of the previous blog to extend, but also about

Scenario Description:-Before doing the app, use the SWIFT Framework language, mixed programming, connotation of a few OC code.-Requires the app's overall functionality to be packaged into a static library, fully ported to another app, using the OC

Believe that the swift, we should know that Swift abandoned the block in OC, but the application of the block is more flexible, the role is very powerful. Swift is certainly not lack of such a design pattern, so the introduction of closures, its

MARK:-Pass in a string and create a QR code imagePrivate Func Creatqrcodeimage (text:string, sizeh:cgfloat), uiimage{Text is the QR code to bring in the information, Sizeh is the height of the two-dimensional codeCreating filtersLet filter =

　　Subscript scripts can be defined in the classes (class), struct (struct), enumeration (enumeration) targets, can be considered as access to the collection, list or sequence shortcuts, use subscript script index settings and get values, do not need

After Apple launched the swift language, many feared that OC would soon be replaced, but Apple said it would not abandon OC in 2 years. But now it's fast. Some development teams have started to develop on the basis of swift, but there are many old

Swift Burning Brain Gymnastics (i)-Optional nesting PrefaceSwift is actually much more complex than objective-c, and Swift incorporates a number of new features compared to Objective-c, born in the 80 's. It also makes it more difficult for us to

In Swift, the compiler must complain if you want to execute nslog in the following ways:class Foo {}NSLog("%@",Foo())Because Foo is a native Swift class that is not inherited from NSObject, and NSLog needs its description method, we must make Foo

Outreach (Extension)an extension is the addition of new functionality to an existing class, struct, enumeration type, or protocol type . This includes the ability to extend a type without having permission to get the original source code (that is,

1, CryptoswiftSwift Encryption library, support md5,sha1,sha224,sha256 ...GitHub Address: Https://github.com/krzyzanowskim/CryptoSwift2, KingfisherKingfisher is a library that asynchronously downloads and caches pictures similar to SdwebimageIt's

/* Empty-fit operator 1: empty-fit operator?? Must be an optional type 2: binocular operator, meaning that the front if not empty, then return to the front (arbitrarily unpacked), or return to the back. The following must not be empty. */var

"Swift is a new programming language for writing Ios,os X and watchOS applications. Swift combines the advantages of C and objective-c and is not limited by C compatibility. Swift uses a secure programming model and adds a lot of new features, which

Instances of structs and classes call a special Init method, called a constructor, during construction. The constructor does not have a return value and can be overloaded. In the case of multiple constructor overloads, the runtime can invoke the