Swift

Calculator: Callback Typealias count = (int , int ), intfunc Add (A:int, B:int)->int { return a+b}func delete (A:int, B:int)->int { return a-B }func Cheng (a:int, B:int)->int { return a*b }func Dev ( A:int,

Heard the swift language it's fun. So, let's start Swift.First, we learn a language, we should first to understand his background, how it appears, by looking for information, I understand theSwift is a new programming language for writing Ios,os X

1Func SayHello (personname:string)string//Return is a string type2 {3Let greeting ="Hello"+ PersonName +"!"4 returnGreeting5 }6 7println (SayHello ("Lin"))//hello lin!8 9Func Add (A:int, B:int),IntTen { One returnA +b A } - -println

After the swift language comes out, it may be possible for new projects to be developed directly using swift, but there may be situations in which some classes that have been written with OC or packaged modules are not ready to be written again in

This code snippet is the one I've been looking for all over the internet this week, and after my own modifications, I finally got the navigation up and down.Step1:==> because this search has to be animated, this page must have a navigation

Recently in the company free to work, on the Internet to find a variety of projects to learn to do, the basic is OC, and then their own almost translated into Swift. But write the time to find their own swift that the egg hurts ah, more and more

Import UIKitNote : You can not write in Swift ; Number , but there is a certain precondition , a line only one sentence code If a line has multiple lines of code, then ; Still have to write Note : Swift is a perverted place , sometimes

Import UIKit/*:Optional type ( can have a value , or it can have no value ) * in OC We can assign a value of nil or an object to an object type variable , whereas in Swift if you want to assign a variable to nil It must be explicitly specified

: Playground-noun:a place where people can playImport UIKit/*:Dictionary* and OC difference * 1. {} replaced by [] * 2. Remove All @ * variable dictionary var * immutable dictionary let */var dict = ["name": "Lnj", "Age": Let dict2: [String :

/*Swift's inheritanceIf you want to override the storage properties of the parent class1. After rewriting, you can add property observers to it. Column One:2. You can change it to a calculated attribute (but not the original function of the Parent

The actual development often encountered the need to pass parameters to the WebView or from the webview to take parameters, here wrote a super simple demo for everyone to reference, I JS just learned a day, so the shortcomings of the Haihan.Nonsense

Articles for their own study, the department is reproduced. Notes for learning 51cto courses. If there is infringement, please private messages I delete.The links are as follows.? http://edu.51cto.com/roadmap/view/id-58.html1, unlike the C language,

Articles for their own study, the department is reproduced. Notes for learning 51cto courses. If there is infringement, please private messages I delete.The links are as follows.? http://edu.51cto.com/roadmap/view/id-58.html1. Get every character in

There is no implicit conversion in swift, and Swift will infer the type based on the value you write, which is judged by the first one.--for Each loopFor the back, write the variables you defined.In the back, write the object you want to

Use of notifications1. Send a notification. (Take this notice as an example, notice the name: Gameovernotification. Notification Parameters: Title)Nsnotificationcenter.defaultcenter (). Postnotificationname (object:title);title is the parameter to

The collection view created in Swift is almost the same as in OC, mainly implementing the Uicollectionviewdatasource Data source protocol and Uicollectionviewdelegateflowlayout custom layout protocol. Where Uicollectionviewdelegateflowlayout custom

Creating cells with Swift is basically the same as creating cells with iOS, which is somewhat different in syntax. The call member method in Swift no longer uses [] to send a message, but instead uses the form of a. Member method to invoke the

Write a name in angle brackets to create a generic function or type such as , You can create generic classes, enumerations, and struct-bodiesUse where to specify a list of requirements after the type. For example, to qualify a type that implements a

1. Initialize UitextfieldLet userName =Uitextfield(frame: cgrectmake(0, +, +)); //2. Adding a text box username to the current viewSelf.view . addsubview(userName); 3. text box display text by defaultUserName. Placeholder=" Please enter the

Today, when locating a photo to choose a crash, the real-time test all iphone is working, and the ipad Air iOS8 is used to reproduce the problem. Let me summarize the bugs that I tested a day before I tested them.Phenomenon: Click on profile picture,