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//TODO:字符串    func stringAp(){        let a = 10        let b = "trut"                        //转换        var c = String(a)        var e = String(a+a)+"tf"

Jason类里面为 weak 弱引用  ROUSI类(可以避免循环强引用)class Jason { var name:String? init(name:String) { print("Jason 实例化") self.name = name } weak var rousi:ROUSI? deinit {

func closeBlock() { //sorted 参数必须是字符串 let names = ["Cat", "Apple", "Egg", "Block", "Dog"] //倒序 var reversedNames = names.sorted(by: { (s1: String, s2: String) -> Bool i

import UIKit//1结构体内方法struct MyStruct { var a = 0 , b = 0 //实例化的时候，实参是不可改变，如果确实需要改的话加 mutating mutating func changeby(justA:Int,justB:Int) { a += justA b +

//1基类class Father { var pen = 0.0 func read() { print("父类的新闻") }}//2子类class Sun_M: Father { var sunPen = 0 override func read() {

//1、扩展 Double 类型extension Double{ var km:Double{return self * 10 } var m:Double{return self } var cm:Double{return self/10 } }extension Double{ var dm:Double{retur

ModelClass.swiftimport UIKitstruct ModelStruct { var a = 0 var b = 3 import UIKitclass ViewController: UIViewController { override func viewDidLoad() { super.viewDidLo

ProtocolClass2.swiftimport UIKit//定义协议protocol ProClassDelegate { //代理函数 func test(name:String,type:Int) func test2()}class ProtocolClass2: NSObject { //声明类的代理属性变量名

class Iland { var fish : Double init(setFish fish2:Double) { fish = 11.3 }}struct Hotal { var waiter:Double init(waiter2:Double) { waiter = waiter2 }}/

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enum ErrorEnum:Error { case emptySubValue case lenghtError}struct Item { let a:Int? let b:Double?}class ViewController: UIViewController { override func vi

finalclass finalSub: finalClass { //无法重写基类 定义了 final 的属性和函数}//加到class前，无法被继承final class unDo{ }

/*!3、泛型类型*///给一个结构体声明泛型类型struct structType { var array:[TypeName] = [TypeName]() var dic = [String:TypeName]() //数组增加、删 mutating func appenArray(_ some:TypeName) {

import UIKit//1无入参，无返回值typealias funcBlock1 = ()->()//2返回Stringtypealias funcBlock2 = (_ a:Int,_ b:Int)->()//3typealias funcBlock3 = (Int,Int) -> (String) -> ()//4typealias funcBlock4 = (Int

func yuanZhu(x:String){ //声明元组 let yuan = (1,"yuan") // (整型+字符串) let yuan2 = ("yuan2",33.22,true) // (字符串+整型+Bool) let yuan6 = (fuck:1 , gang:"NO", hehe:["w",3

字符串的 Unicode 表示形式当一个 Unicode 字符串被写进文本文件或者其他储存时，字符串中的 Unicode 标量会用 Unicode 定义的几种编码格式（encoding forms）编码。每一个字符串中的小块编码都被称代码单元（code units）。这些包括 UTF-8 编码格式（编码字符串为8位的代码单元）， UTF-16 编码格式（编码字符串位16位的代码单元），以及

//字典 func dictionaryAp(){ let a = ["s"] var b = Dictionary() b["a"] = "3" b["b"] = 5 b["c"] = a var d = ["a","3"]

//TODO:打印 func prin(){ print("hello work") print("sub = \(sub)") } //TODO:声明变量、常量 func verLet(){ //let 常量修饰符 let a = 10

//判断系统版本 if#available(iOS 9.0, macOS 10,*) { } else { }不定期更新....

//TODO:条件语句 func if_Swich_ForIn_do(){ var e = ["d","aa","cc","bb"] //for...in.. for s in e { //if...else.. i

import UIKitclass ViewController: UIViewController { override func viewDidLoad() { super.viewDidLoad() let s1 = myCode(s: "Before", x: 0) let s2 = self

GitHub地址:https://github.com/JasonChen02/Swift-OC_varandra (第一次上传到github,相互学习)ViewController.swiftimport UIKitfunc oc_u_swift(){}class ViewController: UIViewController { override func vie

//初始类型enum test { case fef case sdf}//关联值enum test2 { case a(Int,Float,Bool,Int) case b(String)}//原始值enum test31:Character { case a = "r" case b = "\n" case c =

分别是:Perfect，Vapor，Kitura 和 Zewo

转自:http://www.helloswift.com.cn/swiftmanual/2015/0208/3486.html应用沙盒结构分析1、应用程序包：包含了所有的资源文件和可执行文件2、Documents：保存应用运行时生成的需要持久化的数据，iTunes同步设备时会备份该目录3、tmp：保存应用运行时所需要的临时数据，使用完毕后再将相应的文件从该目录删

func setAp(){ var setAry:Set = ["a","b","c"] var setAry2:Set = ["d","b","e"] //使用intersection(_:)方法根据两个集合中都包含的值创建的一个新的集合。 var intersection = setAry.intersecti

//TODO:数组 任意类型 func arrayAp(){ var bb = Dictionary() var a = Array() //增 a.append(1) a.append(2) //删 a.remove(at: 0) //改

ViewController.swift//基类//不加 private 私有修饰符，默认class类是公开的class Test: UIViewController { //1、private 私有，只能在当前类访问 private var private_value:Int? private func private_fu