Swift

Swift reads app version information There is time we need to read the app version information such as configuration information, so we can use the method: Nsbundle.mainbundle (). Infodictionary to get Example:SwiftLet infodictionary =

first, the PreludeSwift as a new language, after several years of development, gradually improved, has now been updated to 3.0 version, it brings together many other language features, such as JS, Paython, etc., completely different from OC. The

iOS can use a single icon (svg,png) directly. You can also introduce font applications directly:1: Add the Font file (. ttf) you downloaded from the Iconfont platform to the project;Open the Info.plist file, add a new array type key, set the key

The concept of closure (Closure) should not be unfamiliar to anyone who has not learned swift.A friend who learns JavaScript should know that in JavaScript we often talk about closures, and many front-end engineers ask about closures.So, what is a

: Playground-noun:a place where people can playImport CocoaThe basic functionFunctions without parameters and no return valueFunc First () {Print ("This is the first function I wrote")}Call the function,PS parentheses can not be omitted, the

To programmaictlly the content of the app, we need to contect storyboard to a view controller.To does that, we need to create new file call it ' Productviewcontroller ', subclass should Uiviewcontroller:Delete Some uncessary code, the remain code

How often do we meet in the development of Swift? And! , understanding the deep content of these two symbols is very advantageous to our development;At present, the online tutorial on swift3.0 is quite small, if you go to search will find early

The use of Wkwebview will appear when you do some of the pages have a prompt box, why use other People's Page prompt box is always not displayed, in fact, a large part of the reason is because the prompt box is called by JS, you need to implement

Introduction to Lazy Loading lazy loading Lazy loading is also the way of Swift (Apple's design idea: that all objects are actually loaded into memory when they are used) Unlike OC, Swift has a special keyword to

An introduction to the optional types Attention: A knowledge point that is more understood in Swift when an optional type is available Learn more about using Xcode tips to get started Slowly understand the principles

////Viewcontroller.swift//Optional options for judging////Created by think Peng on 16/9/16.//copyright©2016 of the year. All rights reserved.//Import UIKitclassViewcontroller:uiviewcontroller {Overridefunc viewdidload () {super.viewdidload ()//demo1

Regular expressions1. Rules for creating regular expressionsLet pattern = "abc"2. Creating a regular Expression objectWay One: Try Modedo {Let regex = Try Nsregularexpression (Pattern:pattern, Options:. caseinsensitive)} catch {Print (Error)}Way two:

1. Basic useLet num = 23If num > 10 {Print ("num is big")}else If num Print ("num is Fushu")}else{Print ("num is mid")}In Swift, the conditional statement followed by if must be a booltype expression, as if (num) in OC cannot be used in swift2.if

Boolean typeLogical, can only be true or false. expressed in bool.There are two Boolean constants: True and False.Mainly used in conditional judgment statements,If a non-Boolean value is used where the bool type is required, the type safety

The new anomaly capture mechanism is updated with the new Swift2.0 released on WWDC 2015, and the unusual try-catch mechanism helps us locate the cause of the error faster, and here is a brief explanation of the use of the try-catch mechanism. 1.

/** Tap gestures */FuncTapgesturedemo() {Create a gesture recognizerLet gesture =UITapGestureRecognizer (target:Self, Action:"Viewtap:")Attaching a recognizer to a viewSelf.view1.addGestureRecognizer (Gesture)}/** Zoom gesture */FuncPinchgesturedemo(

Chapter One Analysis OverviewThe malicious Trojan sample is a PE file (name: Evtdiag.exe) running on the Winodws platform. The file size is 64KB and the compilation time is February 5, 2016.After analysis, the sample was customized to attack the

OC and Swift call one, OC invoke Swift file two, Swift call OC file Three, note and summarize add: Iv. custom bridging file One, OC invoke Swift file　　When you create a swift file in the OC project, Xcode prompts you to create a bridging file, click

Error HandlingError handling is the process of responding to an error and returning from an error. Swift provides the first type of error support, including throwing, capturing, transmitting, and controlling recoverable errors at run time.Some

Similar to static properties, a static method, also known as a type method, is defined in Swift, which refers to enumerations, structs, and classes. A static method defines a method that is similar to a static property, where the keyword used by the