Swift

1. Basic1.1) Swift is also annotated with//and/* * * * * * * * * * * * * allow multiline comments.1.2) Swift uses print and println printing, its parameters are a generic type, and almost all types are printable.1.3) Swift is correct after the

Exceptions (Exception) and errors (error).In OBJECTIVE-C development, an exception is often caused by a programmer's error, such as when we send this message to an object that cannot respond to a message NSObject  , get NSInvalidArgumentException 

In fact, the example of swift and the class method of the distinction is very simple, like to see the source code, certainly a glance to understand. A class method is defined by adding a class modifier to the instance method. Just attach an example

OC and Swift are 2 in different languages, OC code can only be written with OC files, Swift code can only be written in Swift file, although 2 different languages, but can call each other, but need to do a bridge, is the following 2

Cat Share, must boutiqueOriginal articles, welcome reprint. Reprint Please specify: Sanayu's BlogAddress: http://blog.csdn.net/u013357243#Constants: LetLet is a keyword, a language keyword, used to declare constants, what is a keyword? GA do not

The first contact with Swift language was at the end of 2014, once iOS development was the home of OC, because I did not spend the effort to tidy up some of the relevant documents, now first-tier city technology companies to the development trend of

Calculation of floating-point number for remainderUnlike the C language and objective-c,swift, floating-point numbers can be redundant.Interval operatorSwift provides two operators that facilitate the expression of a range of values.Closed interval

Introduction to Swift Syntax Basics three (functions, closures)Function: A function is a separate block of code that is used to accomplish a specific task. You give a function a proper name to identify what the function does, and when the

First, play a play playgroundFirst of all, to create a new playground, after the creation, you will see a defined variable str in the program, in the right side of the sidebar will show the value of the variable, that is, we can in the process of

5. Enumerations and structs:You do not have to provide a value to an enumeration member. If we want to provide an enumeration member with a value (raw value), we can use a string, character, integer, or floating-point number type. 123

Swift and Objective-c in the same ProjectCross-use Swift and OC in the projectSwift's compatibility with OC allows you to write applications using SWIFT+OC in your project, called Mix + match, which allows you to seamlessly engage your existing OC

An array can hold any type, and the type of initialization determines what type of element can be added after the arrayLet immutable variable groupLet ARRAYC = [1,2,3,4,5,6,7]var variable arrayvar Arraym = [1,2,3,4,5,6,7]Number of array

Many of the LBS-based projects will determine if the positioning function is turned on. So as to remind the user to open or alert to where to open the operation ... At OC we wrote:// detect if positioning is turned onif ([cllocationmanager

1.swift Create TableView Two classes Viewcontroller and Secondviewcontroller in this example2. Create a navigation bar in Appdelegate, initialize with the view Code 1 func application (application:uiapplication, Didfinishlaunchingwithoptions

Protocol example{var simpledescription:string{get}Mutating func adjust ()}Class Inheritance ProtocolClass simple:example{var simpledescription = "Sing"Func Adjust () {println ("Description: \ (simpledescription)")}}var simple = simple

Corelocation is a framework that provides device positioning in iOS. This framework allows for location processing to obtain positional data, such as longitude, latitude, elevation information, and so on.1, positioning accuracy Settings Location

The original blog. Reprint please indicate the sourceHttp://blog.csdn.net/hello_hwcOne, synchronous asynchronous two conceptsIn simple terms. Synchronization is the function or closure (block in Objective C) that completes the ability to

//Viewcontroller.swiftbutton//Created by Su on 15/12/7.Copyright©2015 year Tian. All rights reserved.//Import UIKitClass Viewcontroller:uiviewcontroller {Override Func Viewdidload () {Super.viewdidload ()Create a buttonLet Button:uibutton = UIButton

The delegation/proxy mode in Swift (hereinafter referred to as "proxy mode") is basically consistent with the OBJECT-C proxy model.The basic idea of proxy mode is to give (entrust) another work that I need to do (such as a class or struct, etc.) to

Similar to static properties, a static method, also known as a type method, is defined in Swift, which refers to enumerations, structs, and classes. A static method defines a method that is similar to a static property, where the keyword used by the