Swift3.0 - 真的很简单
Swift3.0 - 数据类型
Swift3.0 - Array
Swift3.0 - 字典
Swift3.0 - 可选值
Swift3.0 - 集合
Swift3.0 - 流控制
Swift3.0 - 对象和类
Swift3.0 - 属性
Swift3.0 - 函数和闭包
Swift3.0 - 初始化和释放
Swift3.0 - 协议protocol
Swift3.0 - 类和结构体的区别
Swift3.0 - 枚举
Swift3.0 - 扩展
Swift3.0 - 下标
Swift3.0 - 泛型
Swift3.0 - 异常错误
Swift3.0 - 断言
Swift3.0 - 自动引用计数(strong,weak,unowned)
Swift3.0 - 检测API
Swift3.0 - 对象的标识
Swift3.0 - 注释
Swift3.0 - 元类型
Swift3.0 - 空间命名
Swift3.0 - 对象判等
Swift3.0 - 探究Self的用途
Swift3.0 - 类簇
Swift3.0 - 动态调用对象(实例)方法
Swift3.0 - 文本输出
Swift3.0 - 黑魔法swizzle
Swift3.0 - 镜像
Swift3.0 - 遇到的坑
var letters = Set<Character>() var favoriteGenres: Set<String> = ["Rock", "Classical", "Hip hop"] var favoriteGenres: Set = ["Rock", "Classical", "Hip hop"]// 类型推断
letters = [] letters.removeAll()
letters.insert("a")
if favoriteGenres.isEmpty {}
favoriteGenres.insert("Jazz")
if let removedGenre = favoriteGenres.remove("Rock") { print("\\(removedGenre)? I'm over it.") } else { print("I never much cared for that.") }
if favoriteGenres.contains("Funk") { print("I get up on the good foot.") } else { print("It's too funky in here.") }
for genre in favoriteGenres { print("\\(genre)") }
let favoriteGenres:Set = ["A","B","C","G","D"] for genre in favoriteGenres.sorted(by: >) { print("\\(genre)") }
let oddDigits: Set = [1, 3, 5, 7, 9] let evenDigits: Set = [0, 2, 4, 6, 8] let singleDigitPrimeNumbers: Set = [2, 3, 5, 7] // 并集 oddDigits.union(evenDigits).sorted() // // [0, 1, 2, 3, 4, 5, 6, 7, 8, 9] // 交集 oddDigits.intersection(evenDigits).sorted() // [] oddDigits.subtracting(singleDigitPrimeNumbers).sorted() // 子集 oddDigits.symmetricDifference(singleDigitPrimeNumbers).sorted() //补集
let houseAnimals: Set = ["", ""] let farmAnimals: Set = ["", "", "", "", ""] let cityAnimals: Set = ["", ""] houseAnimals.isSubset(of: farmAnimals) // true farmAnimals.isSuperset(of: houseAnimals) // true farmAnimals.isDisjoint(with: cityAnimals)