Swift

How OC calls Swift: Add the Import "xxxx-swift.h" header file toSwift calls OC method: need to establish bridging: Xxxx-bridging-header.h header file (build method self-Baidu)Attention:1. When Swift calls OC's Singleton method, the direct xxxx (), ()

I. Installation of SWIFT 3.01. Downloadhttps://swift.org/download/Find swift-3.0 ubuntu 15.10 version download:Https://swift.org/builds/swift-3.0-preview-1/ubuntu1510/swift-3.0-preview-1/swift-3.0-preview-1-ubuntu15.10.tar.gz2. Unzip the file and

One. Arrays1. Create an empty arrayWay One:var array1 = [Int] ()Way two:var array2 = array ()2. Create a hand with default valuesvar array3 = [Int].init (count:5 repeatedvalue:10)//5 elements, all 10var array4 = Array.init (count:5 repeatedvalue: "a"

Mode one: (similar to OC)Class singletondispatch{class Var Shareinstance:singletondispatch {Structural bodystruct Static {static var oncetoken:dispatch_once_t = 0static Var instance:singletondispatch? = Nil}CreateDispatch_once (&STATIC.ONCETOKEC)

Swift--Dictionary1. Create an empty dictionaryWay One:var dic1 = [int:string] () the type of the//key is Int and the type of value is StringWay two:var dic2 = dictionary ()//key is of type Sting2. Create a dictionary with literal amountsvar

1. In the context of Swift and Java about enumerations, two language grammars are similar.Swift defines enumerations:enum compasspoint{ case Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune }Java Definition

zfdatetool.swift//mystudydemo////Created by Franzhou on 16/6/12.//copyright©2016 year kimree. All rights Reserved.//import Uikitpublic class Zfdatetool:nsobject {//DateFormat default = "Yyyy-mm-dd" Publ IC static var formatstring:string! =

1. The for-in loop in Swift is very similar to foreach in Java, simplifying the traversal of the collection.Swift syntax: forIndexinch 1...5{print ("The index is \ (index)")} LetBase=3Let power=3var answer=1 for_inch 1... power

Since Swift Open source, the building of Swift will no longer have to have the necessary Mac, on the open source of Ubuntu can also install the SWIFT compiler environment, today idle bored began to build an environment to play. Morning to get a half-

//: Playground-noun:a Place where people can playImport UIKit//----constructor-------//role of the constructor: used to initialize instances of classes, structs, enumerations//If you do not explicitly define the constructor, the system automatically

//: Playground-noun:a Place where people can playImport UIKit//----class and struct------////1. Definition of structurestructSize {//properties in the struct, given default valuesvar width =375var height=667 //methods can be defined in

1 //: Playground-noun:a Place where people can play2 3 Import UIKit4 5 6 //1.if Statement Implementation criteria Selection7 //(1) Single branch8 varAge =99 Ten ifAge Ten { One APrint"age less than 10 years old") - } - the //(2) Dual Branch -

Swift or objective-c? Swift or objective-c?The Swift language has been released for two years, and iOS development needs to learn C or objective-c. In addition, people seem to be wondering what parts of the iOS development ecosystem Swift is

Constructor (bottom)constructor that can failIf an object of a class, struct, or enum type is likely to fail in the process of constructing itself, it is necessary to define a failed constructor for it. The "failure" referred to here means, for

Before jumping the page we may decide whether to enter the correct data, as shown, if there is no data input pop-up prompt, do not jump.One: page Jump1. On the first page, put a label on a TextField and a button2. Put two labels and a button on the

In Swift you can convert an object into data, and all you have to do isFirst, you need to have the object implement the NSObject and nscoding protocols.Second, implement the following two methods:EncodewithcoderInit (coder Adecoder:nscoder)//an

Scene:The class name in the project is too long to distinguish it from the file name, and if a module has more classes, it is difficult to get a more elegant name. To make the module name readable, it is common practice to add a module prefix.

？ Equivalent to a layer of packets on the property, that is, a optional value, and optional has none and some two values, the property is not initialized when defined by the result is swift automatically initialized to nil value (that is, none in

/* The generic function 1:equatable increases the filtering for whether = = and! = are supported. Get a class test first ~ 2: operator overloaded functions have to write outside. 3: Inherit from NSObject do not write protocol equatable, unclear

Swrevealviewcontroller GithubImportI'm just going to create a new Swrevealviewcontroller package here and paste the code directly intoImport in a bridge file #import "SWRevealViewController.h" UseCompile, then create a new