Swift

What is Swift? Swift is Apple's programming language in WWDC 2014, quoted by the Swift programming language: Swift is a new programming language for iOS and OS X apps that builds on the best of C and objective-c without the Constra INTs of C

Often in development, in order to make the code more concise, we often encapsulate the commonly used functions into components (or UI components, UI controls), and this is also more conducive to the reuse of code.I wrote an article about how to

The Swift memory management feature is handled by using automatic reference count (ARC). ARC is used to initialize and cancel initialization of the system resources, thereby releasing the memory space of the class instance used when the instance is

Swift provides two collection types to store collections, arrays, and dictionaries. An array is a collection of serialized lists of the same type. A dictionary is an unordered collection that can get a value using a unique identifier similar to a

Engaged in a day to add a number of annotations to make, and a profound response to write code blindly copy, I do not know its consequences are too serious, a bit of a mistake to find a big half-day, OK, but more BB, said add a number of annotations

Enumeration (enumerations) enumeration defines a common group type for values associated with a system. It also allows you to use these values in a type-safe situation while you are programming. If you're familiar with C, you know that in C, an

class definition We represent classes and structs by keyword class and struct, and define their specific contents in a pair of curly braces /* class SomeClass { //class definition goes here } struct Somestructure { //structure definition G OES

Imagine that you have finished your app and run it well, but the interface looks too earthy, you can draw many different sizes of custom controls in Photoshop, and Apple doesn't have a 4x retina screen.Or you've already made a plan, use the core

Original: Swift game combat-Parkour Panda 02 Create Panda classPoints:how to Inherit Skspritenode : Subclasses must call a specified constructor for SkspritenodeInit () { super.init (Texture:texture,color:uicolor.whitecolor (), Size:size)}set the

Usually use a common regular classclassRegex {Let internalexpression:nsregularexpression let pattern:string init (_ pattern:string) {sel F.pattern=patternvarError:nserror?self.internalexpression= Nsregularexpression (Pattern:pattern, Options:.

Today, a colleague asked me how to add a click Method in TableView's Headerview, and today it is simple to explain that the way to add a click gesture in Swift is: ImagePath. Addgesturerecognizer(UITapGestureRecognizer( target: Self, Action:

Interoperability is a feature that enables swift and objective-c to be interfaced, enabling you to access and use code written in another language in a file written in one language. When you are ready to start incorporating swift into your

1. First open Xcode6, build a project, here I use the OBJECTIVE-C default programming language, the project name is "swiftandobjective".2. In order to use Swift's demo in OC, the following classes need to be established.A) the creation of a

The arguments passed into the function can be simply passed in with an array dynamically Func sumof (Numbers:int ...), Int {var sum = 0 for number in numbers {sum + = number} return sum} Sumof () sumof (597, Sumof) (222,3333,44444,555555) Functions

1, the decimal string into the digital swift, if you want to convert the string to a numeric type (such as Integer, floating point type, etc.). You can turn it into a nsstring type first, then turn it back. 1234

ObjectiveBlink of an eye Swift3 come out almost a year, from OC to Swift also experienced a lot, so on the use of the difference also summed up a little, for the record, right when one of their notes.Of course, some of the differences may be heard,

Floating-point typesis a number that has a number of decimal points. The range represented is larger than the integer type and can store numbers larger or smaller than the int type.3 types of representations are available:(1) Float represents a

Arrays are array data types in swift, and Nsarray is an array data type in OC, and there is a difference between the two. Some of the things in OC are sometimes used in swift, and today we're going to use nsarray and arrays in swift and convert them.

First:Use Func to declare a function, using the name and arguments to invoke the function. Use to specify the function return value.Use a tuple to return multiple values.The number of arguments to the function is variable, with an array to fetch

Control flow refers to "logical control statements", including if, If-else, for, for-in, while, do-while, switch, and so on. Most of them are similar to OC, but Swift has enhanced the functionality of control statements in certain conveniences. such