Swift

From this chapter, the most important content of the Swift programming language Guide is the concept, not too much code. Understanding Swift's object-oriented philosophy, syntax, and class structure, the construction process is a great help for very

As a new language with hundreds of family, Swift has the innate ecological advantage of Apple, and its many outstanding open source projects on GitHub. Since the Swift language was released by Apple in June 2014, the author @swiftlanguage has been

1 self-increment and self-increment operations2 3Like the C language, Swift also provides the convenience of adding 1 or minus 1 to the variable itself (+ +) and self-subtraction (--) operator. Its operands can be shaped and floating-point. 4var i =0

1 To find the remainder operation2 3To find the remainder operation (a%b) is the number of times B is just good enough to accommodate a, returning the extra portion (remainder). 4Note: The remainder operation (%) is also called modulo operation in

In Playgroundm, type the following code to find the maximum score and the minimum score in a score arrayFunc Maxminscore (scores:array)-(maxscore:int,minscore:int)? {//A tuple that can be emptyIf scores.isempty{return nil//To determine if there is a

//Viewcontroller.swiftUiimageview and UIImage//Created by Mac on 15/4/12.Copyright (c) year BSY. All rights reserved.//Import UIKitclass Viewcontroller:uiviewcontroller {Override func viewdidload () {Super. Viewdidload () // loading of local

Swifthttp package is a third-party HTTP library under iOS official address: Https://github.com/daltoniam/SwiftHTTPProject development If you want to use a third-party library, you need to use CocoapodsEnvironment ready: Update Ruby gem into terminal,

WebView control is to do the Web application development of the most used control, directly within the WebView to specify a page address to access the Web page, but also to implement the Uiwebviewdelegate protocol to implement the corresponding

Having previously talked about capturing the value of a control by storyboard, let's try to implement the same functionality in a pure code way. First define a stepper and a label, and use the label to display the current value of the

Reprint please declare source: http://blog.csdn.net/jinnchang/article/details/444035371. UIButton OverviewInheritance: UIButton, Uicontrol, UIViewControl style:2. Initialization of UIButton(1) using the Buttonwithtype Build button, there are six

First, closure of the conceptThere are 2 prerequisites for a computer language to support closures:1, Support function type, can pass function as parameter or return value;2. Support function nestingExample:Func caculate (opr:string)-(int,int)->int {

Functions can be defined in other functions as nested functionsFunc caculate (opr:string)-(int,int)->int {Func Add (A:int, b:int), Int {Return a + b}Func Sub (a:int,b:int), Int {Return A-B}var result: (int,int)-IntSwitch opr{Case "+":result =

1. Build a Tabbarcontroller three Navigationcontroller three Viewcontroller2. Add the code after initsubviews in the Sliderviewcontroller file:// load the Maintab with Maincontentview var maintabvc:uitabbarcontroller! = self.storyboard!.

Recently in the study of the available third-party icon controls, and then after searching the web, the feeling is more powerful is Coreplot , so began to study how to deploy to the program. Online about this aspect of the tutorial relatively few,

There are several points to note when Swift implements object archiving To inherit nscoding, implement two methods Extension is a classification, the classification does not allow storage capacity, so the protocol method can not be

Switches we are familiar with, usually in the use of the iphone is often encountered, mainly used in the program to turn on or disable a setting. Its properties are relatively simple:Status state: Open or closeWhat's the color when it's open?What

In the first few words we took care of the layout, this word we have to add all the references, is connected to the controllerUiviewcontroller { @IBOutlet weak var textfield1:uitextfield! @IBOutlet weak var web1:uiwebview!Then the agent, first

The search bar is a very simple action in the UI, drag a search bar.The more important property in the search bar is the placeholder, which is the placeholder on the right side of the graph, such as entering "Please enter keywords", as shown

In the view, let's take a look at the contents of the view:1. Implementation of the view: the base class of the view is UIView2. Mode of view: Size fill mode, that is, when the size exceeds the value we set to take what is appropriate for the screen

Closures are very useful in swift. The popular explanation is that an int is stored with a string containing a string of characters, and the closure is a type that contains the function. With closures, you can handle a lot of things that you can't