Swift

Original articles, welcome reprint. Reprint Please specify: Dongsheng's BlogOptional type:Let's start by looking at the following code:var Ten = nil // compile error = nil // Compile errorint and string types cannot accept nil, but

OC Development also has almost a year, the recent events are not particularly tight, it is time to learn about Swift, although the Swift API and OC is the same but there are a lot of grammatical differences, recently in the NetEase Open class at

The creation of nine Gongge is a regular one, and the horizontal and vertical intervals of each lattice are fixed, by calculating the position of each lattice, and then placing them in the view in turn.The general steps are:1. Set the total number

Use protocol to declare an interface in SwiftBoth classes, enumerations, and structs in Swift can implement interfacesMethods in a class in Swift can modify the value of a member variableThe methods in the struct in swift cannot modify the member

Enumeration:The enumeration in Swift is somewhat similar to the concept of a class, it has its own properties, and can have its own methodsThe member in the enumeration has the original value and the actual value, and the original value is used to

Swift builds the project, in the OC class, calls the Swift Library, (Iqkeyboardmanagerswift)1. Normally #import "Wdapp-swift.h" in OC, then you can call the Swift class directly 2. Problem: I am a project of Swift construction, as above is not

Original articles, welcome reprint. Reprint Please specify: Dongsheng's BlogThe syntax for classes and struct-body definitions in Swift is very similar. Classes use class keywords to define classes, and struct keywords are used to define structs,

var ivar = [:]ivar.classname//__nsdictionaryivar i = 1i.classname//Error: ' Int ' does not has a member named ' ClassName 'if you want to get the type of a primitive and you had to use bridgetoobjectivec () var i = 1i.bridgetoobjectivec ().

Original articles, welcome reprint. Reprint Please specify: Dongsheng's BlogEnumerations in Swift can define a set of constants, improve the readability of the program, and also have object-oriented characteristics.Use the ENUM keyword to declare an

Swift sets the length of the Hundred family, absorbing the mainstream language java,c,c++ and other good features, so it is very powerful, today we will look at its powerful string.First, we take a few questions to understand and understand Swift's

Association objects (Associated Objects)extension Uiviewcontroller {Private structAssociatedkeys {Staticvar descriptivename ="Nsh_descriptivename"} var descriptivename:string? { Get { returnObjc_getassociatedobject (self,

Recently busy, want to do a lot of things, can do out of only one part, I think maybe I did not plan and rule caused, I need to persist, today wrote a swift2.0 to the button or image to add shadow effect, as a note it:-)Swift Code:Let Image1 =

Optional typeThe 2nd chapter of Swift's authoritative guide--swift the Language Foundation, and this chapter selects the most basic features of the swift language. Although these features represent only a small fraction of the full features of swift,

String Links: string Connection in swift language I find it very interesting, the variable connection needs to use the right slash, and the variable name to enclose "\ (variable name)", followed by the string concatenated with a comma ', '

(1) Traverse(2) Length(3) Splicing(4) interpolation(5) Case(6) Trim(7) Split...... Wait a minute var a = "Hello" var B = String () A. IsEmpty b = "xxxxxyyyyy" b. IsEmpty Traverse For C in B { println (c) } Calculate

(1) Variables and constants(2) Basic type(3) Forced conversion(4) Type bool(5) Meta-group(6) Optional value Variables and constants var str = "Hello, Playground" Let Maxnum = 888 Specify type var str1:string = "Test" var

The swift version of the tupleDescriptionThe contents of the tuple are not many, using the same words as normal variables, the following is the test source:////Viewcontroller.swift//tuples////Created by youxianming on 15/10/12.//Import

Build a Xcode project. OS X > Application > Command Line tool because we just want to play the Swift language feature does not do UI. Product name; ExampleORG Name:cyperORG Id:me.cyperBundle Id:me.cyper.exampleSaved on the desktop.Example >

Original articles, welcome reprint. Reprint Please specify: Dongsheng's BlogPassing references to parametersA class is a reference type, and other data types such as Integer, float, Boolean, character, string, tuple, collection, enumeration, and

Swift version of StringattributeEffectSourceHttps://github.com/YouXianMing/Swift-StringAttribute////Stringattributeprotocol.swift//Swift-stringattribute////Created by youxianming on 15/10/8.//copyright©2015 year youxianming. All rights