learning swift pdf

,souce: "Math", scores:98.5)println (Touple.name)Said the above a big push, I still do not know what the tuple can do, Balabala, only know how to create, read and so on, then we this meta-group of small partners can do something ah, below a little chestnutOverride Func Viewdidload () { var touple = (name: "Xiaoyu", Age:16,souce: "Math", scores:98.5) println ( Touple.name) Swapme (touple.name, B: touple.souce) println (touple) } func swapmeUsing the

//cgfloat/doubleLet point = Cgpoint (x:10.10Y:20.20) Let temp=Point.xlet sum3= Double (temp) + number8Names of constants and variables* You can use any character you like as a constant and variable name, including Unicode characters* Constants and variable names cannot contain mathematical symbols, arrows, reserved (or illegal) Unicode code points, lines and tabs* Also cannot start with a number, but can contain a number elsewhere in a constant and variable name* ... As with C and oc, no Zuo no

easier to readLet Touple = (name: "Xiaoyu", Age:16,souce: "Math", scores:98.5)println (Touple.name)Said the above a big push, I still do not know the tuple can do what, Balabala. Just know how to create, read and so on. So what can we do with this meta-group of Little friends, and here's a little chestnut.Override Func Viewdidload () { var touple = (name: "Xiaoyu", Age:16,souce: "Math", scores:98.5) println ( Touple.name) Swapme (touple.name, B: touple.souce) p

origin of the coordinates")//The underscore here can be understood as ignoring the value of the x-axis, or to understand that any value is a row of cases (_, 0): println ("This point is on the x-axis") c ASE (0, _): println ("This point on the y-axis") case ( -2...2, -2...2): println ("This point on an x-axis is-2 ... 2,y axis is-2 ... 2 in the rectangle ") default:println (" This point is outside the rectangle ")}//Case's value binding let Point1 = (0) switch Point1 {case (Let x, 0): pr

There are a few tips to learn about swift and share with you todayWe write swift programs are generally used in XCDE, just choose the development language notBut the swift program tip in XCDE is too slag.Today we recommend a learning method---swift

Read Catalogue Function Closed Package Before learning Swift Personal notes, according to Github:the-swift-programming-language-in-chinese Learning, summary, will be important content extraction, understand and organize for learning notes, conveni

Swift is more than Objective-c, and with objective-c seamless integration, is a sharp weapon. In Swift, you can see the different programming language of the Shadow, the world language a big copy, so good, reduce the learning cost of different languages.Let and Var, compared to only the language of the Var has a choice, if the value of the variable will not be mo

of biological specimens, and are the main developers of the Python Computer Vision Library Mahotas. He started developing open source software in 1998, began Python development in 2004, and contributed code to multiple Python open source libraries. In addition, Luis has a PhD from the world's leading Carnegie Mellon University in Machine learning and has published numerous scientific papers.Translator Profile:Liu FengSenior Research Engineer of Baidu

() method to delete the specified element and verify the delete resultifLet Removedvalue = airports. RemoveValue (Forkey:"DUB") {print ("The removed airport ' s name is (removedvalue).")}To traverse a dictionary using for-in: for inch Airports { print ("(Airportcode): (airportname)")}// Yyz:toronto Pearson // Lhr:london HeathrowBy accessing the keys or the Values property, we can also traverse the dictionary key or value: forAirportcodeinchAirports.keys {print ("Airport Code: (airportcode)")

Lazy loading, computed properties, reflection mechanism1. Lazy Loading:Purpose: 1. Delay creation, load when needed, save memory space2. Avoid the development of the problem of understanding the package (important!!!) ）Knowledge: 1. All UIView and subclasses are in development, once the function is rewritten, the Initwithcoder function must be implemented to provide two channels, and Xcode will now be prompted.2. Simple notation for lazy loading in swiftLazy var Label:uilabel = UILabel ()3. Lazy

content, while preserving the original style. However, due to the limited level of translators, there are inevitably some irregularities in the book, and readers are urged to criticize.Finally, I would like to dedicate the Chinese translation of this book to my doctoral tutor Wang Jue researcher! Wang Jue was very concerned about the theory, algorithm and application of machine learning, and had a unique and profound understanding of PAC

interception methods are available in Swift The way is very troublesome Index creation is more troublesome The simple way is to convert a string into NSString to use the After the identifier, add: as NSString Import UIKit//1. Define the string: Swift defines the string without @, directly a C-language string ""Let str ="Hello World"//2. Traversing characters

": "Zhang San", "Age": 10]Exception: Let array= [[string:anyobject]] = [[' Name ': ' Zhang San ', ' Age ': ' [' Name ': ' John Doe ', ' age ': 15]]2. Dictionary additions and deletions are variable and immutable in OC, the LET definition in Swift is immutable, var definition is variablevar dict = ["Name": "Zhang San". " Age ": 15]New If key does not exist is newdict["title" = "eldest brother"Modify if key exists or is modifieddict["name"] = "John Doe"

In the course of learning Java, strings have encountered string and StringBuffer, the former is immutable, the string cannot be modified, the latter is mutable, and can be modified continuously. In Swift, the definition of a string becomes simpler.(1) OverviewIn Swift, the string constants are declared with Let and cannot be modified. A string variable is declare

dictionaryvar dictionary = ["FirstName": "Chris", "LastName": "Paul"]for (Key,value) in dictionary{println ("\ (key), \ (value)")//Traversal Dictionary}⑥. Traversing stringsFor character in "Hello" {println (character)//an intuitive here does not indicate that the type of the object being traversed is inappropriate, but it is estimated that this is Swift's grammatical habit, hoping to get used to it later.}Conclusion, today's swift

Closure Introduction最近在学习swift的过程中，发现很多人都对于swift的闭包有很深的疑惑，今天就以我个人学习swift 1.2版本下的一些经验进行一些分享，如有错漏，望大家指出。ps.《关于Swift学习之每日一tip》我这段时间会持续更新，而其中关于swift的内容都是在今年(2014)春节之后，苹果推出Xcode6.3测试版的之后推出的swift 1.2的语法，关于1.2与1.1的语法，我会在明天的内容中进行一下介绍。Univ

Summary of this chapter1.9 Exercises in this chapter2nd Chapter HTML Basics3rd. Text style labels in Web sitesThe 4th Chapter HyperlinksChapter 5th use of imagesChapter 6th use of Forms7th Chapter Multimedia Elements8th Chapter Framework9th Chapter List Elements10th Chapter FORM Elements11th Chapter Website Layout2nd CSS Style12th Chapter CSS Style Basics13th Chapter CSS Properties14th Chapter CSS Pseudo-class and pseudo-element15th Chapter ScriptChapter 16th Events17th. Syntax specification an

Opening the sharing feature in Swift is so easy.1, the first needImport Social2. Under the Share button event var Controller:slcomposeviewcontroller = Slcomposeviewcontroller (Forservicetype:slservicetypesinaweibo) Controller.setinitialtext ("Get Up Swift! ") Controller.addimage (UIImage (named:" app720_12801 ")) Self.presentviewcontroller (Controller, animated: True, Completion:nil)This opens the share

correlation value cannot be used together //enumeration You can declare a method just like a class, but if you modify your value, you need to add a keyword. mutating func nextmonth (), String { switch self {case January: ' Self = February return ' has been pulled by February ' Case . February: Self = March return "March pull" default:return "etc" }} case Januar

stringLet catcharacter: [Character] = ["C", "a", "T", "!"] Let catstring = String (catcharacter)Three: String operationsLet string1 = "Hello" let string2 = "There" var welcome = string1 + string2 //string concatenation, provided that all elements of the + operation must be guaranteed to be not an optional variable, must be a value of string type, cannot be String? Optional type, optional type not able to participate in + operation The insert operation of the string, in