Swift

First of all, let's declare a classclass Parent { // declares a property var p1:string = "abc" // declares a method func m () { print ("parent m") } / / final func n () { }}Then we new a parent class (note

Below, let's enumerate some of the commonly used swift string methodsFirst, let's define some string variables and constants." Hello World " // The value is Hello you string " Hai " "! "String connection, in fact, the string of connection words,

/*Type conversions1. Conversion between two types without any relationship2. Upward and downward transformation in the chain of succession*/The first form ofLet i = 3Let str = "\ (i)"Let str2 = String (i)The second form ofClass Parent {var p =

I feel the generics are hard, and I hope it helps.A generic, B-value exchange, which types can be passed toFunc myswap (inout a:t,inout b:t) {Let temp = aA = bb = Temp}var a = 111var B = 222Myswap (&a, B: &b)Ordinary Shaping A, B value exchange, can

Step1: Customizes a class Ntviewcontroller, which inherits Uitabbarcontroller:////Ntviewcontroller.swift//Housekeeper////Created by Lu Yang on 15/10/20.//copyright©2015 year Niven Moore. All rights reserved.//Import Foundationimport

Swift provides good support for object-oriented, and here are a few of its unique features.Lazy Load PropertiesSwift provides support for lazy-loading properties in classes using the language level lazy as a keyword:class Renderer { lazy var

: Playground-noun:a place where people can playImport UIKit/*:String* The string in OC is an object , and the string in Swift is a struct * The string in OC ends with a , and the string in Swift does not end in* string in Swift has better

Write a method to inherit a stringAutomatic text wrapping and width controlExtension String { func textsizewithfont (font: uifont, constrainedtosize size:cgsize), cgsize {var textSize:cgsize! if cgsizeequaltosize(size, Cgsizezero) { let

Interpolate in a stringvar " Hello " 6var"hello \ (i)"Accumulate stringsvar " Hello " 6var"hello \ (i)"Inserting a single value character with a functionvar " fdasf " Aaa.insert ("C", AtIndex:aaa.startIndex)Inserting multiple characters with a

: Playground-noun:a place where people can playImport Cocoavar str0 = "Hello, playground"Classes are reference types, structs and enumerations are value typesStructural Body ***************struct Point {var x = 0var y = 1The method of the structural

Original articles, welcome reprint. Reprint Please specify: Dongsheng's BlogThe properties in Swift are divided into storage properties and computed properties, which are data members in OBJECTIVE-C, calculated properties do not store data, but can

original articles, welcome reprint. Reprint Please specify: Dongsheng's blog When you use optional types and optional chains, you use the question mark multiple times (? ) and an exclamation point ( ! ), but their meaning is different, let me

1 Import Foundation2 3 /*4 Enumeration5 6 Grammatical Structure7 enum type {8 Case Value9 }Ten */ One //define an enumeration notation 1 A enumLiushiqun { - CaseName - Case Age the CaseSex - CaseADD - CaseSub - CaseMul +

1 Import Foundation2 3 for varI=1; iTen; i++ {4 println (i)5 }6 7Let str1="ADL;FJASDFL;OUEWROUQWPERUADF"8 forCinchstr1 {9 SwitchC {Ten Case "a","F","o": One println (c) A - default: - vart="" the

Operators in SwiftImport Foundation//Character Typevar Char: Character ="a"Char="b"println (Char)varStr:stringstr="abcceadfasdfl;jk\0dfaaaa 0001496"println (str)//View length countelements the number of elements returnedprintln (countelements

Swift's function 脚本语言 has many similarities. If one day with the swift Development server, look forward to wow (everything is possible, after all, they say to run on Linux),??Judging by the number of arguments No parametersFunc MyFunc

Original articles, welcome reprint. Reprint Please specify: Dongsheng's BlogYou see a question mark (?) and an exclamation point (!) in the SWIFT program expression, what do they mean? These symbols are related to the optional type and the optional

A few days ago in Apple's Official document learning IOS9 3D Touch, found Apple about 3D touch Smaple code, unexpectedly is written in swift syntax, and there is no OC version.It seems that learning Swift grammar is imperative.The best way to learn

Use OC Swift Intercept The last file name in the pathHow to intercept the last file name in the path below Appdelegate.swift/users/xxx/desktop /swift/swift02/code/02 - Custom Log/weibo/weibo/appdelegate.swiftUse OC How to Intercept-(NSString *)

Important: Uialertview is deprecated in IOS 8. (Note that uialertviewdelegate is also deprecated.) To create and manage alerts in IOS 8 and later, instead use Uialertcontroller with a preferredstyle ofuialertcontrollersty Lealert. uialertview