Random Number Generation (swift), random number generation swiftRandom Number Generation (swift) by Wu xueying
OverridefuncviewDidLoad (){
Super. viewDidLoad ()
For _ in0... 100 {
Println (randomInRange (1... 6 ))
}
}
Func randomInRange (range: Range Let count = UInt32 (range. endIndex-range. startIndex)
Return Int (arc4random_uniform (count) + range. startIndex}
Copyright Disclaimer: This ar
Functions and closures functions and closures)
Use of functions
There is a significant difference between Function Definition and OC in swift. Use func to define the function, define the number and type of struct in brackets, and use-> to define the type of return value.
func greet(name: String, day: String) -> String { return "Hello \(name), today is \(day)."}greet("Bob", "Tuesday")
Use a single tuple () to return multiple return values
func
fengsh998 Original address: http://blog.csdn.net/fengsh998/article/details/30354127 reprint please indicate the sourceSwift does not use a new set of threads, using a set of threads from the OC source. The following example illustrates the use of threads in Swift.Its use includes common: NSTHREAD,NSOPERATIONQUEUE,GCGImport UIKit class Swiftthreaddemo:uiviewcontroller {var queue = Nsoperationqueue ()//init ()//{ Alloc//Super.init ()//} deinit {//dealloc} func Test Gcdthread () {Dis
While watching Apple's official swift language, there was an experiment: the Write an extension for the Double type, which is the add an Absolutevalue property. When you add attributes directly using extension, there is an error (of course, the code is not finished, playground is good to use).Extension double {//Add Absolutevalue property to double type by using extension. var absolutevalue:double { }}result Error, said: ' var ' declaration wit
There are a number of programming languages that Web developers can choose from, such as Java,. Net, PHP, Ruby, Perl, Python, and so on, but today we're going to talk about two of the oldest and most popular languages, C/s + +. It is because of its fascinating features, it gives them more effective functions, and has been supported by the major tool manufacturers. Today, these two languages are still active in the programming world, and not only have powerful feature sets, but they also provide
Output to: http://robbin.javaeye.com/blog/57474
There is almost no controversy in the MACOs platform, and textmate is used by everyone. However, there are many ides available for selection and use on the Windows platform, but each has its own strengths and weaknesses. Based on all the ruby ide I have used. Ror ide on Windows platforms is mainly divided into two categories: one is a heavyweight full
Original article:
Http://www.mkyong.com/spring/how-to-install-spring-ide-in-eclipse/
Spring IDE is a very useful graphical user interface tool adding support for Spring Framework. In this tutorial, we show you two ways to install Spring IDE in Eclipse.
Version used in this tutorial:
Spring IDE 2.9
Eclipse 3.7
Spri
Java developers spend a lot of time burying themselves in Java code, using a variety of different ides (intergrated development environment) to develop Java code, so I'll introduce you to 11 different Ides, These Ides offer a variety of features such as building Java applications, TestNG, debugging, code checking, code help, JUnit testing, multivariate refactoring, visual GUI builders and code editors, Java and Maven build tools, ant, Data modeling and build queries, and more.1.NetBeansNetBeans
conditions in the code development phase, and assertions are an effective reminder of the importance of highlighting in this case (before you should publish).Basic Operators (base operator)Operators are specific symbols that can be used to check, change, or combine values. For example, the addition operator (+) adds two numbers together (for example, let i = 1+2). Complex also has logical and (and) operator (e.g. if Entereddoorcode Passedretinascan) and the auto-increment operator ++i, which
Mutability of Collections (variable collection)Dictionaries and Arrays store multiple values in a collection. If you create an array or dictionary and assign a value to a variable, the set is mutable (mutable). This means that after you create the collection, you can still change the size of the collection, add elements to the collection, or delete existing elements. instead , if you create an array or dictionary assigned to a constant, then this set is not modifiable, meaning that the dictionar
Swift variables and functions, swift Variable Functions
Func getNums ()-> (Int, Int) {// the swift function can return multiple variables return (2, 3)} let (a, B) = getNums () // let is a constant, which cannot be changed once assigned values. var is the println (a) variable. // The output 2var f = getNums // function is an object and can be used as a variable.
Swift cainiao getting started video tutorial-10-attributes, swift-10-
I am a beginner to swift cainiao recorded by myself. You are welcome to make a brick. If you have any questions, please leave a message here.
Main content:
Storage Properties)Computed Properties)Property observer)Global and Local Variables)Type Properties)
Video address:
Baidu Network Disk
Swift 2: You can use @ NSManage to mark the automatic generation method. swift @ nsmanage
View Final Version
Original article linkAuthor: Tomasz SzulcOriginal Article Date:Translator: mmoaay; Proofreader: numbbbbb; Final: shanks
Swift 2 in Xcode 7 beta 5 has another feature: we can use@NSManagedTo declare the automatic generation method.
This technique i
Swift offers 3 main collection types, array,set,dictionary. This section describes the array.An array is a collection of the same types that are stored in an orderly manner, and the same values can appear multiple times in different locations.Attention:The array type of swift bridges the Nsarray class of foundation Array type simple syntaxSwift array type complete writing array First, create an array1. Cre
Original address: https://www.bloc.io/tutorials/swiftris-build-your-first-ios-game-with-swift#!/chapters/677Well, we are officially starting our Swift game development!First, you need to create a new project, familiar with iOS development of children's shoes should not be unfamiliar with this step. Let's take one step at a pace:Here are two ways to build a new project that you can:
If your Mac isn'
A string is an ordered set of characters, such as "Hellow,world" or "Albatross." The strings in Swift are represented by string types and correspond to a collection of Character type values.
The String type in Swift provides a high-speed, Unicode-compliant text-handling style for your programming. Swift's syntax for creating and processing strings is light and readable, quite similar to the string syntax o
Integer
An integer is an integer without a decimal number, such as 42,-23. Integers can be signed (positive, 0, negative), or unsigned (positive, 0).
Swift provides a 8,16,32,64-bit form of signed and unsigned integers that follow a naming convention similar to the C language. The type of a 8-bit unsigned integer is the type of the uint8,32-bit signed integer, which, like other types of the Swift language
Instantiate an object based on the class name, for example, to 一个类名的 create a Viewcontroller instance from a string.Let Controllername="Spainappproto. "+xibname // Xibname-shaped like Xxviewcontrollervar classtype:anyobject.type= asBut when you instantiate according to Uiviewcontroller.self, you need to convert a little bit. var x:string = m.debugdescription // m is uiviewcontroller.self x = X.stringbyreplacingoccurrencesofstring ("Optional (" "") = X.stringbyreplacingoccurrences
Shake a shake function presumably everyone has used, the new Year's time to rob red envelopes did not less shake it, then the swift language how to achieve such cool features. Shake belongs to an iOS built-in recognizable action, in the viewcontroller that you need to implement the Shake function, add the following code to the Viewdidload method:Uiapplication.sharedapplication (). Applicationsupportsshaketoedit = True self.becomefirstresponder
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