Swift

It is called operator overloading to have an existing operator operate on a custom class and struct or redefine an operation rule for an existing operator.1, add the custom two coordinate structure body objects by overloading the plus operator:

1.2.newsviewcontroller.swift newsviewcontroller.swift// navigationdemo//// Created by Carrie on 14-6-27.// Copyright (c) 2014 Carrie . All rights Reserved.//import Uikitclass Newsviewcontroller:uiviewcontroller { override func Viewdidload () {

fengsh998 Original address:http://blog.csdn.net/fengsh998/article/details/28904115 Reprint Please indicate the source Suppose that the article is helpful to you. Please support me by leaving a message or following the public account fengsh998 ,

Review the methods of Objective-cBefore looking at Swift, let's briefly review our previous methods of checking the usability of the SDK with Objective-c.Checking the availability of classes and frameworksIOS 9 has introduced many new frameworks as

Today is mainly about the use of strings, the syntax of the string and object-c syntax is not the same, but the idea is the same, that is, the wording is not the same. If you are familiar with. NET and Java syntax, then you have little deep pressure.

Swift does not seem to have a way to output strings in reverse order, and then decides to add a reverse method to the String class by extension (Extension) to reverse the output string.First create a swift file, the naming rules are not very clear,

Objects in Swift can be converted because object-oriented involves inheritance, subclasses, parents, and so on.There are a few rules, let's talk first.A subclass object can be converted directly to the parent class object'sThe parent class object

Static libraries and dynamic librariesFirst, add the knowledge of the static and dynamic libraries. I am not familiar with this part of the content, no development experience, such as the wrong welcome to face.Static LibraryThe code of the Static

Original articles, welcome reprint. Reprint Please specify: Dongsheng's BlogUse Var or let?In the course of our development, when is the definition of the keyword Var, or is it defined as let?Actually AH all can satisfy our demand, then how should

You must be familiar with the observer pattern in object-c. Swift provides a simpler way to implementWhen we need to assign values to the object's property values, we can use Willset and didset to observe the changes in the object's property

Directly on the code, as follows:/**    *  get the width and height of a string** @param text:nsstring* @param font:uifont** @return CGRect*/ classfunc gettextrectsize (text:nsstring, font: Uifont , Size: cgsize ),cgrect { var attributes =

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

Implicitly unwrapped optionals implicit parsing optionsMentioned above. Optional means that the constant or variable "has no value". The optional if declaration is used to infer whether a value exists, assuming that there is a value for the analysis

Introduction of third-party fonts and icons in iOSUsing the Swift language, introduce fontawesome1. Download Font Awesome (official website: http://fortawesome.github.io/Font-Awesome/ )2. Import the *.ttf file from the font into the project3.

做了一个oc项目，里面有用到swift第三方，真机运行的时候是正常的，用企业级证书打包成ipa之后安装完成之后闪退，通过导出手机log日志发现错误提示：Dyld Error Message:  Library not loaded: @rpath/libswiftCore.dylib  Referenced from:

I said in the previous article, give a function name is best to let a person through the name of the approximate function of the function, rather than let people read the internal code to know what your function is, everyone is a programmer, you do

I. Creation of group animationsStart by creating a group animation, which is the animation of the change in size and transparency.//Size Change LetScaleanimation = Cakeyframeanimation (keypath:"Transform.scale") Scaleanimation.keytimes = [0,0

Recently began to learn swift, the process of learning and summarized into a series, easy to review the summary later.Basic syntax Base syntaxNo semicolon is required at the end of each line in Swift, and multiple statements need to be separated

Say less nonsense, directly on the code:var Barsanim = Uiimageview (frame:self.view.frame);Barsanim . animationimages = Nsarray () as [anyobject]; barsanim. animationimages ?. Append (UIImage(named:"wave_000")!); barsanim. animationimages ?.

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