reactive swift example

specific language governing permissions and * limitations under the License. **//*** creates a simple HTTP server this listens for incoming connections on port 9080.* for each request receieved, the Server simply sends a simple Hello World message* back to the client.**/#if OS (Linux) import Glibc#elseimport Darwin#endifi Mport utilsimport foundation//Create server Socketlet address = parseaddress () Let SERVER_SOCKFD = Createsocket (address)/ /Listen on socket with queue of 5listen (SERVER_SOC

3 constraints. Example Import UikitClass Viewcontroller:uiviewcontroller, Uitableviewdelegate, Uitableviewdatasource {var catalog = [[String]] ()@IBOutlet weak var tableview:uitableview!Override Func Viewdidload () {Super.viewdidload ()Initializing a list of dataCatalog.append (["section I: Swift environment set-up","As the swift development

In Swift, a single case differs from OC in that it is written in many different ways, and if a. Swift file creates only one class, you can use that dispatch_once notation, If there are many classes in a. Swift file, an error will be made, and it needs to be written as below, so that the page is more simpleDeclaring static properties at the bottom 1 static var res

" static Let shared = Swiftsingleton () } var single1 = swiftsingleton.shared var single2 = swiftsingleton.shared Single2.name = "2" println ("------->\ (single1.name)") println ("------->\ (single2.name)") Copy CodeThe printing results are as follows: ------->1 ------->2 Program ended with exit code:0 Copy CodeAs can be seen from the above, through the implementation of the struct, we can not guarantee that there is only

overloading of constructorsIn swift, subclasses do not inherit the constructor of the parent class by default.Constructors ' overloads follow the rules of the constructor chain (1.1-1.3)The constructor inherits the following rules:2.1. If no specified constructors are defined in the subclass, the specified constructors for all parent classes are automatically inherited2.2. If all the parent classes in the subclass are provided with the specified cons

LockNo concurrency, no encoding. As long as we talk about multithreading or concurrent code, it may be difficult for us to bypass the discussion of locks. Simply put, in order to securely access the same resource in different threads, we need these access sequences. There are many lock methods in Cocoa and Objective-C, but the most common method in daily development is @ synchronized. This keyword can be used to modify a variable, and automatically add and remove mutex locks. In this way, the va

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 implement custom components by inheriting UIView: Swift-Inherits UIView implements custom visualization components (with a scorecard sample) This article describes how to use custom components in storyboard, w

Seven, use Alamofire for file download 1, custom download File save directoryThe following code downloads the logo picture to the user's document directory (Documnets directory), and the filename is unchanged. Alamofire.download (. Get, "Yun_qi_img/logo.png") {Temporaryurl, response inLet FileManager = Nsfilemanager.defaultmanager ()Let Directoryurl = Filemanager.urlsfordirectory (. Documentdirectory,Indomains:. Userdomainmask) [0]Let pathcomponent = Response.suggestedfilenameReturn Directoryu

Swift refers to several languages, adding generics as a mechanism that makes people love and hate. Generics increase the expressiveness of the language and reduce redundancy, which is good news, but the bad news is: For complex implementations, seven around eight do not revolve, the syntax is easy to stun people ... Here's one example. This is a simplified example