Swift

When we use the Search bar (uisearchbar), if you set it to "shows Cancel button", there is a Cancel button on the right side of the input box (the title text is cancel). Sometimes we want to change this button to something else, like "search."

Uiviewcontroller (view controller) presumably everyone will not be unfamiliar, often used in development. This time, talk about its life cycle. 1, the life cycle of the view Said to be the life cycle of the viewcontroller, actually refers to the

On the previous blog we mainly talk about the more efficient merge sorting algorithm , this blog we will introduce another efficient sorting algorithm: Fast sorting . The idea of quick sorting is similar to the merge sort, which is sorted by the way

public class Huautilitityimage:nsobject { Normal renderingpublic func Renderingimagewithtintcolor (image:uiimage?,_ tintcolor:uicolor), UIImage? {return Renderingimagewiththintcolor (image, Tintcolor, Cgblendmode.destinationin)}Gradient

Apple after Xcode 6.3, in order to solve the problem of Swift and OC mixed, introduced a new feature of objective-c: nullability annotations.at the heart of this new feature are two different types of annotations: __nullable and __nonnull. We can

Map is not used in OC, but Swift is exceptionally well-disposed when dealing with arrays, thanks to the function of map;Map function Arr.map () it gets a closure expression as a unique parameter, and each element in the collection is called once for

The first two days have just written the swift call OC, today on the original basis, implemented OC invoke Swift.First, create a oneswiftfile.swift file and create a class that inherits from the NSObject (this place you can choose to inherit the

To get started with Swift, the previous OC was a weak language, and Swift was a strong language, with a big difference in syntax.//JSON file[ { "name":"Json1", "title":"Test 1", }, { "name":"Json2", "title":"Test 2", }, {

There is no macro definition in Swift, and Apple recommends using the let or get property to override the macro definition value. Although there is no # define, we can still use #if and match the compiled configuration to complete conditional

Http://www.mamicode.com/info-detail-923593.htmlRecently in the reading of the teacher to write code often encountered two unfamiliar keywords, but when I knocked on my computer is not the time to knock out, later only to know that this is for swift

Subscript ScriptSubscript scripts can be defined in the classes (class), struct (structure), and enumeration (enumeration) targets , which can be thought of as access to the collection (collection), list, or sequence (sequence shortcut , using the

The Core Foundation framework is Apple's offering a set of concepts derived from the Foundation framework, programming interfaces for C-style APIs. While it is cumbersome to invoke this C-style API in Swift, it is sometimes very convenient to use

Add Swift File:uiview+extensionImport uikitextension UIView {//xvar x:cgfloat {Get { returnframe.origin.x}Set(newval) {var tmpframe:cgrect=Frame tmpframe.origin.x=newval Frame=Tmpframe}} //yvar y:cgfloat {Get {

original articles, welcome reprint. Reprint Please specify: Dongsheng's blog implement target and action Association use Uicontrol class AddTarget (_:action:forcontrolevents:) method, the sample code is as follows:Button.addtarget (self,action:

Original articles, welcome reprint. Reprint Please specify: Dongsheng's BlogPassing references to parametersA class is a reference type, and other data types such as Integer, float, Boolean, character, string, tuple, collection, enumeration, and

Protocol :The 1.Swift protocol is used to define the specifications that multiple types should follow2. The agreement defines a specification that does not provide any implementation 3. The agreement unifies the attribute name , method, subscript

Some of the tips in the documentation can help improve the quality of your Swift program, making your code less error-prone and more readable. Explicitly marking the final class and class protocol is two obvious examples. However, there are some

Original articles, welcome reprint. Reprint Please specify: Dongsheng's BlogThe Target and action (action) are medium event handling mechanisms for iOS and OS X app development.Questions raisedis a buttonlabelsample case design prototype that

Original articles, welcome reprint. Reprint Please specify: Dongsheng's BlogA function or method that can be placed behind a try is required, and they are likely to throw an error, which is appended with the throws keyword after the arguments to the

14 InitializationInitialization is the preparation phase of the instantiation of classes, structs, and enumeration types. This stage sets the initialization values for the properties stored by this instance and makes some preparations before using