Swift

The use of sockets can be very easy to achieve customer service and server long connection, and two-way data communication. But sometimes the length of the packets we send is not fixed (such as a chat system), the usual practice is to add a header

The beta version of Swift 3 is now out of the box, and Chris Lattner in the mail before saying that Swift 3 was almost completely completed in August. One of the biggest problems in writing a demo or a project migrating to Swift 3.0 should be the

Delegate The interface-delegate (protocol-delegate) pattern in COCOA development is a common design pattern, which runs through the COCOA framework, and makes an indelible contribution to the relationship between the code and the cleaning and

The month small liter once used the interface to carry on the adaptation, as does not have the systematic Xcode training person, is too troublesome. Or the code comes directly. You can set the size of a component by directly calculating the width

The protocol can require that the subject must contain some specific name and type of instance attribute (instance property) or Class attribute (Type property), and can also require the property's (设置权限)settable and (访问权限)gettable , but it does not

Uiview.animatewithduration (0.5, delay:0.0, usingspringwithdamping:0.3, initialspringvelocity:0.0, Options: Uiviewanimationoptions.curveeaseinout, animations: {(), Void inDeal with your space frame in hereSelf.pressGoodsBtn.frame = CGRect (x:

Any language, as long as there is no need to forget, you have to knock on a small project, practice practiced hand;Let SCROLLVIEWBG = Uiscrollview.init (frame:slscreenrect)Let images = ["First", "second", "third"]Let Pagecontrol = Uipagecontrol.init

```... earlier we said top-level code isn ' t allowed in the most of the your app ' s source files. The exception is a special file named "Main.swift", which behaves much like a playground file, but was built with your app ' s source code. The "Main.

DemandWe create a swift type of project, for various reasons, there will be some OC class, OC class used in the project some of the swift classes, and the Swift class to use these OC class, how to solve?AnswerIn fact, swift and OC files can coexist

Swift Enumeration1. Enumerating the basic syntaxenum Method { Case Add Case Sub Case Mul Case Div}You can also use a simpler notation.enum method1{ case Add, div,mul,sub}2. Swift matches enumeration valuesfunc Choosemethod (Op:method)-(double,

Xcode recently upgraded, there are a variety of egg pain errors, today encountered an import framework prompted the swift version of the problem, as follows:"Use Legacy Swift Language Version" (swift_version) was required to being configured

button click eventfunc ontouchupinside () { struct touchupinside { static var count: Int = 0 }touchupinside. Count + = 1 Print(touchupinside. Count) if touchupinside. Count% 2 = = 0 { Newsview. Frame = CGRectMake(ten, uiscreen.

UI Interface CodeImport UIKitClass Cameraview: UIView { var camerabutton: UIButton! var photobutton: UIButton! var image: uiimageview! override init(frame: cgrect) {Super. Init(frame:frame) camerabuttonmethods() photobuttonmethods()

1 // Set Row height adaptive 2 Tableview.rowheight = uitableviewautomaticdimension3 4 // Set Estimated Row height 5 1 //bottom of the toolbar2toolbar.snp_makeconstraints {(make)inch3 make.top.equalTo (

A recurring topic in the Swift Circle is: When to use a struct and when to use class. I think I'm going to give my personal opinion today, too.Value VS ReferenceThe answer is really simple: when you need to use class with value semantics, you need

iOS development in the interface jump in two ways, up and down jump and left and right jump.Jump up and down _to: Let Secondviewcontroller = Secondviewcontroller () Self. Presentviewcontroller (Secondviewcontroller, animated: True,

Background:These two days accidentally looked at the basic grammar of Swift, feel since read, still write notes, leave a Trace ~Overall, it feels like Swift is a mix of front-and back-end multi-lingual Products ~ ~To be a name. NET Camp people, less

First, privatePrivate-decorated properties, methods, and member variables can only be used in this class (fully private)Fileprivate modified can be used in extensionSecond, take the typeTo take the type of a class, the class in OC is [Class

：DescriptionCode now supports SWIFT3 syntaxIntroduction to use:1. Initialize positionFrame for the entire popview relative to the position of the entire screen arrow distance to the right position, default 15//popmenu = Swiftpopmenu (frame:cgrect (

Swift offers 11 types of keyboards:In the development, we can choose different keyboard styles according to different needs, for example, when we only need to enter the phone number, we can choose the pure numeric type of keyboard (.