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About Swift on SwiftOfficial document translation, for reference only, my English is not good, learning while translating, do not like to spray.Swift is a new programming language for IOS, OS X, WatchOS, and TvOS apps that builds on the best of C and Objective-c, WI Thout the constraints of C compatibility. Swift adopts safe programming patterns and adds modern features to make programming easier, more flex

Why is swift so popular ?, Swift fire? First of all, swift is very popular. It ranks 16 in the month when it comes out. Why is it so hot? Is it because of the Apple brand? Or other reasons? As a code farmer (working for more than 15 years), I will talk about my personal opinions. There are many excellent PC-side development languages: JavaScript, Python, and Ruby

This section includes the following: String (Strings) Value (Numbers) Collection Class (Collection Classes) Error (Errors) Foundation data type (Types) Foundation Function (Foundation Functions) Core Foundation As part of OBJECTIVE-C Interoperability (interoperability), Swift provides a fast and efficient way to process COCOA data types.Swift will automatically convert some of the objective-c types to

10 swift code that impressed Swift programmers and 10 swift code Using a single line of code to complete the same 10 exercises, let's take a look at the contest between Swift and other languages. 　　Multiply the value of each element in the array by 2 Use map to implement var arr = [1,2,3,4]; var newArr =

This section contains content: Mix and Match overview (mix and Match overview) Import in target of the same app (importing Code from within the same app target) Import from Target in the same Framework (importing Code from within the same Framework target) Import external Framework (importing External frameworks) Using Swift in Objective-c (using Swift from OBJECTIVE-C) Rewrite

In addition to the release of IOS8 and Max OS X 10.10, Apple released a new programming language, Swift, at this year's WWDC conference. It has to be said that Swift has a big change and makes programming easier, and the following describes the definition of constants and variables for Swift, the use of basic control statements:It is important to note that

One: Understanding Swift//1. Import the framework//#import Import UIKit//2. Define an identifier//int a = ten;//define identifiers in Swift: whether the identifier is a constant or a variable must be established//var (variable)/let (constant) identifier name: type of identifier = initialization valuevar a:int =Ten; let B:double=3.14; a= in;//B = 3.11 Error notation//3. The statement can not follow after the

[Swift learning] Swift programming tour --- ARC (20), swift --- arc Swift uses automatic reference count (ARC) to track and manage the memory used by the application. In most cases, this means that in the Swift language, memory management is "still working" and you do not ne

Migration provides an opportunity to re-examine existing objective-c applications, as well as the Swift code to better optimize the architecture, logic, and performance of your application. Directly, you will use the previously learned mix and match and the interoperability between the two languages for incremental migration work. The Mix-and-match feature makes it easy to choose which features and functions to use with

This page contains content: Initialization Can fail initialization Accessing properties Method ID compatibility (ID compatibility) Null values and optional values Extension (Extensions) Closures (Closures) Compare objects Swift type compatibility Dynamic distribution Lightweight generics Objective-c Selector (selectors) Interoperability is a feature that enables

[Swift first sight] Swift array and swift ArrayIn Objective-C, arrays are common data types. In Swift, there are NSArray and NSMutableArray in OC, however, in Swift, only let and var are used to determine whether the array is variable. arrays in

[Swift learning] Swift programming tour-character and string (5), swift tour String is the String type of swift. A string is a valid Character Sequence. Therefore, a character set can be expressed in combination. You can use the + symbol to connect to a string. String type is a fast and modern String implementation. E

[Swift learning] Swift programming journey (1): swift learning programming journey The most classic example of learning a new language is to output "Hello World !" Print ("Hello World! ") Swift is output in this way. If you have used other languages, you may be familiar with them. But it is much simpler than some c. 1.

[Swift learning] Swift programming journey (3): swift learning programming journey 　　Tuples) 　　Tuples combines multiple single values into a composite value. It can contain any type of value, and does not need to be of the same type. 1. Create tuples 1. let http404error = (404,"NOT FOUND!")let (statusCode, statusMessage) = http404errorprint("The status code is \

This article mainly introduces the code of interaction between Swift and Object-c, which is divided into two parts. One is the Object-c class that the SWIFT project calls, and the other is the OBJECT-C project that calls the Swift class. The process is simple, but it is still a bit difficult for people who have not been exposed to it.You can download this article

: Thursday night 8:00-9:30 January 16: First Swift video tutorial-swift syntax and operatorsdescribes how to use Xcode's playground to write and run Swift program code, Swift's program structure, and familiarity with the use of playground tools. It also introduces the basic syntax of the swift language, including iden

Summarize the 20 common questions and answers in the swift language, and summarize the 20 common questions in the swift language.1. if I am an entry-level iOS developer, should I select swift for learning, objective-c for learning, or both? This can be decided based on two situations: 1. I want to enter the company's position for iOS development 2. I just want to

your plist file less added something, together to send up;　　Here is the choice of one, I have chosen to run in the background, you can choose another property, use time to run, as for key I do not remember. I can find it in Baidu Map Forum.Here incidentally, after the iOS9, Apple opened ATS, the service is actually need to support HTTPS, it is estimated that Apple's goal is to reverse force developers to enhance their security, but sometimes the company does not want to spend money to buy the H

It's time to develop apps for iOS and Mac OS x using the easy-to-use, comprehensive swif language.While programming languages are not so easy to fade away, the development team that insists on the fading paradigm is doing so. If you are developing applications for mobile devices and you have not studied swift, then note that when Swift involves the development of applications for Macs, iphones, ipads, Apple

1.Introduction to SwiftThe new development language, released by WWDC in 2014, works with OC on Mac OS and IOS platforms to build apps based on Apple platforms.After the swift2.0, the syntax was stable, and the swift4.0, released in 2017, changed, but only added some new features. These new features need to be run on Xcode9 to show the effect. It is worth mentioning that it supports UNICODE9, which means that you can use some image icons to act as variables.2. Features :① is fast , secure , us