Swift

Use Func to define a function. Func is followed by a function name, followed by a parameter list, written in parentheses. Separates between the return type and the parameter name.StringString-> String { return"Hello \(name), today is

1. Definition of function and concept of calling functionA function is a block of code that accomplishes a particular task, giving the code block a meaningful name, called the function name. When the function needs to be executed, the name can be

Optional type What is an optional typeThere are two possible types of data for an optional value type: A value, no value (nil). Note that you need to add a question mark (?) after the variable type. If int plus question mark (?), the variable is of

1. The concept of tuple 1-tupleA tuple is a composite data type. Using parentheses to contain a set of data, you can group different types of data together. You can use implicit type inference, or you can have type callouts.Examples are as

1. Definition of function and concept of calling functionA function is a block of code that accomplishes a particular task, giving the code block a meaningful name, called the function name. When the function needs to be executed, the name can be

The use of UITableView in Swift and OC is basically the same, but there are some grammatical differences. Let's start by writing a tableview step-by-step from 0.First, create TableViewImport Uikitlet ID="Cell" //cell ID, it is recommended to write a

The top of a variable, if not initialized, is not practical, Swift will error.Visual objects must also be new before they can be used.This is another way I agree with Apple.Swift is really good!If the variable is declared as an optional value, the

The class of the switch statement in Swift uses another:Powerful switch statement var a:int = 100switch A Where a 0: println (" Positive ") Default: println (" Unknow ")}The logic that this code implements is the logic that we usually see

Five, setArray1. Generic type array2. Simplification [Type]var myar:arrayvar names:[string]Myarr = array ()Names = array (count:10,repeatedvalue: "Heri")Nums = array (count:100,repeatedvalue:0)var values = ["2", "3", "4", "O"]println (Names[1])Name[0

generics are a very understanding of the grammar, let me very worship!It's so much love and hate that you're crazy when you don't understand.Allows a program to define type parameters in functions, enumerations, structs, classes ( types can be

Use OC and Swift to create system-brought refresh interfacesOne: Swift Refresh interface code:Import UIKitClass Viewcontroller:uitableviewcontroller {Data sources for displayvar _datasource:[string] = []Load more states Steam wheelvar

Func ClickButton1 () {Create Uialertcontrollervar alertctl: uialertcontroller = uialertcontroller(title: "Alert", message: "You clicked Button1", Preferredstyle: uialertcontrollerstyle. Alert) Adding action to Uialertcontroller,action

Constants, variablesDeclaring constants: LetDeclaring variables: vareg. Let connum = 1; var num = 2; Basic data typesInt, Float, Double, Bool, tuples, optionalwhichTuples Ganso, can contain a collection of different types of values;Optional an

First, the basic operatorlet a = 5 var b = ten b = Aif a = b{ The assignment operator in Swift does not return itself as a value, so compiling is illegal, helping developers avoid mistakes, very human language}Second, mathematical operatorslet dog:

Swiftyjson makes it easier to process JSON data in the swift language.With Swiftyjson all the To do is:? 1234 let json = JSONValue(dataFromNetworking)iflet userName = json[0]["user"]["name"].string{  //Now you got your value}

reprint Please declare source: http://blog.csdn.net/jinnchang/article/details/44853487------------------------------------------------------------------------------------------viewcontroller.swift//uitextfieldsample////Created by Jinnchang on 15/4/2.

1 //2 //Viewcontroller.swift3 //Jieparsejson4 //5 //Created by Jiezhang on 14-10-5.6 //Copyright (c) 2014 Jiezhang. All rights reserved.7 //8 9 ImportUIKitTen One classViewcontroller:uiviewcontroller { A -@IBOutlet weak

13 functionsOC function Definition:Returns a value type function name (parameter type parameter name, parameter type argument name) {}The Swift function defines:Func function name (parameter name: argument type, Parameter name: argument type),

1. Class2. Structure (struct)3. Enumeration (enum)Object-oriented through classes and structs in swift language, enumerations have object-oriented features in Swift languageExamples and objectsIn object-oriented, the process of creating an object

Dictionary CollectionA dictionary represents a very complex collection that allows you to access an element by a keyDeclaration and initialization of a dictionary collection:var strudentdictionary1:dictionary = [102: "Jack", "Mark", 107: "Jay"];