Swift

After we used our own defined controller, we found that the restaurant on the TableView was gone, so we add the data, add a new restaurant class, this class we don't need to inherit the class of the system, just add a swift file.Import

The previous article describes the function's default parameters and input and output functions, today to learn something else.1. Multiple return value functions:I don't know if you remember the concept of Ganso. No, a return value of a function

Since the June WWDC Congress by Apple's great God Chris Lattner to us for the first time to show that Swift has been more than half a year, although the vast majority of software companies in the code is still not seen the slightest shadow of swift,

Numeric type conversionsFloating-point type: If no explicitly specified type is float,swift, it is inferred as DoubleInteger ConversionsLet twothousand:uint16 = 2_000Let One:uint8 = 1Let twothousandandone:uint16 = Twothousand + UInt16

Original: Http://joeyio.com/ios/2014/06/04/swift---/The swift language uses VAR to define variables, but unlike other languages, Swift does not automatically assign an initial value to a variable, which means that the variable does not have a

This article is written under the playground of XcodeSo what is playground?When it comes to playground we have to mention swift, the language that Apple has pushed recently, and Swift is the new development language that Apple has released on WWDC201

About optional Control Flow If let Constantname = someoptional { Statements } If the optional is nil, the if is not entered, otherwise it is executed and constantname is the value of the optional Example: If Let Actualnumber = Possiblenumber.toint ()

var str_componets = "I like Swift"Str_componets.componentsseparatedbystring ("")In this way, the str_componets is divided into four sections:["I", "like", "Swift", "" ")You can also use Nscharacterset to split:var str_componets = "I would prefer a

Currently in its own personal project, Swift is already being used to write code. This article shows you a activityindicator view that you have designed in your project.Before we start, let's look at the final results, such as:I recommend that you

One, the general theme color point of useThe app will set its theme color before publishing to unify the style of the app (there may be multiple sets of topics). There are several aspects to the theme color setting, as follows:1.TabBar section, set

Closures Introductory EntryJust come back from Shanghai today and simply make a list of things.Introduction (really very simple)The complete shape of the closure is this way:(parameters), in statements}Parameter abbreviations We can directly use  

//Playground-noun:a Place where people can playImport Uikitvar somestring="some string literal value"somestring+="another"//Initialize the empty string 2 ways, the results are consistentvar emptystring =""var anotheremptystring=String

Collection types in Swift have arrays and dictionariesThe difference between an array and a dictionary is that the array is ordered, the dictionary type is unordered and the dictionary has a key value1. Definition and updating of arraysThe

Catalog IndexBreeze Annotated-swift programming languagePoint 11.Numeric type literalcode Example: - // decimalBinaryinteger = 0b10001 // binaryoctalinteger = 0o21 // Eight- binary 0x11 // 16 binaryAnnotations: The

Constants and variablesConstants are constants defined in a class that are not modifiable, and can be assigned in constructors. Let decorationVariables can be modified. var modifierTraversal of characters in a stringFor code in string {}For codeunit

Recently doing iOS development requires reading data from a nsdata. However, the relevant document could not be found. Online search also someone asked, I see there are objective-c answers, but basically there is no swift solution.NSData's Bytes is

Original blog, reproduced please indicate the sourceUse the Nskeyedunarchiver class to convert to each other1, nsdictionary turn NSDatavar dictionaryexample: [String:anyobject] = ["User": "UserName", "Pass": "Password", "token": "0123456789", "image"

Swift and Objective-c in the same ProjectCross-use Swift and OC in the projectSwift's compatibility with OC allows you to write applications using SWIFT+OC in your project, called Mix + match, which allows you to seamlessly engage your existing OC

//Playground-noun:a Place where people can playImport Uikitvar str="Hello, playground."//there must be a space between the color and the = signlet colors =[ "Air Force Blue":(Red: the, Green:138, Blue:168), "Bittersweet":(Red:254, Green:111,

Original blog, reproduced please indicate the sourceClasses that use KVC and KVO in Swift must inherit from NSObjectKVCKey-value codingis a mechanism for indirectly accessing objectsThe value of key is the string of the property name, the returned