Swift

Object-oriented general overview: Swift is not only capable of process-oriented programming, but also object-oriented programming (OOP). Object-oriented is actually "taking the object as the core", thinking that our objective world is composed of

////Delayrun.swift// ////Created by xuqing on 16/7/1.//copyright©2016 year xuqing. All rights reserved.//Import Foundationtypealias Task= (Cancel:bool)() func Delayrun (Time:nstimeinterval, Task: ()(), Task?{func dispatch_later (block: ()-())

After the first three parts of the study, we have a basic understanding of swift, know its basic syntax, but also know the classes, structs, enumerations, protocols, extensions and so on. But knowing the above does not mean that we can do a good job

Reprinted from: http://www.mamicode.com/info-detail-1069228.htmlLabel:1, notice (nsnotification) describes the notice here does not mean to the user to see the notification message, but the system inside the message delivery notification. Before we

Many program apes prefer dynamic languages such as Python and JavaScript, because these languages do not require program apes to declare and manage their types for each variable.In most dynamic types of languages, variables can be of any type, while

Import UIKitClass Viewcontroller:uitableviewcontroller {OverrideFuncViewdidload() {Super.viewdidload ()Set data source and proxy Tableview.datasource =Self tableview.delegate =SelfSet the Reuse ID Tableview.registerclass

Original from: www.hangge.com reprint please keep the original link: http://www.hangge.com/blog/cache/detail_517.html1, function with no return valueFunc Test (name:string) {}2, returns a return valueFunc test (name:string), bool{ returntrue}3,

Gets the character of a location in the string, the difference between the swift versions Swift 3.0 Let text = "abc" Let INDEX2 = Text.index (Text.startindex, offsetby:2)//will call succ 2 timeslet

Arc4random () This global function generates a 9-digit random integer1, the following is the use of the Arc4random function to find a 1~100 random number (including 1 and 100)Let Temp:int = Int (arc4random ()%) +1 Print (temp)2, the following

1. Function permissions Public: Maximum permissions that can be accessed in the current framework and other frameworksInternal: Default permissions that can be accessed freely in the current frameworkPrivate: Personal permissions,

Here are just a list of frequently used UITableView properties and methods, others can be similar to use, pay attention to the usage canSet Global Variables UITableViewvar Mytableview = UITableView ();Set the data source arrayvar DataArray = Nsarray

1. Function permissions Public: Maximum permissions that can be accessed in the current framework and other frameworksInternal: Default permissions that can be accessed freely in the current frameworkPrivate: Personal permissions, accessible

There may be a lot of swift developers ignoring such a detail: In Swift, the void type is actually an alias type, and its true type is (), that is, a null ganso (empty tuple)!This language feature gives Swift a few more convenient ways to express

1. Enter the code cloud first, click on your avatar, 2. There is an SSH public key, click, 3. After the terminal inputssh-keygen-t rsa-c“[email protected]" , note:" To use English, otherwise the terminal will not display, that is, their own mailbox,

1. Create an OC Project project, and then find the following field in build settings, modify it.2. Then create the swift file in the project and click OK if you are prompted to create a bridging file.Then in build Settings, find Swift,, two files

The first day of Swift learning:1: Use of arraysDefinition of the array:Let numbers = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10]2: Traversal of arraysFor num in numbers {Print (num)}3: Also through subscript to make contentLet NUM1 = Numbers[0]Let num2 =

1: Definition of the dictionary:* ' Let ' immutable dictionary* ' var ' variable dictionary2: ' [String:nsobject] ' is the most commonly used dictionary type3; assignment directly using ' dict[key] = value ' format* If key does not exist, the new

First, the methodIn OC, the function is in the form of a C language, not the same as the methodfunction: int sum (int num1, int num2) {return NUM1 + num2;}Method:-(int) sum: (int) NUM1 num2: (int) num2 {return nim1 + num2;}The functions and methods

Learning a burst of swift for the optional type has been not very understanding, for this purpose to learn a bit, by watching the Stanford University video, the summary of what he saidOptional has two values1.not set (not set)Represents this value

We know that if you want to use code such as objc/c++ in a pure Swift project, you must use a bridge header file.Let me briefly explain how to create a bridge header file quickly and safely.First select New file in Xcode, create a new. m file from