Swift 协议详解

protocol OutputStreamType       `文本输出流`{    mutating func write(_ string: String)}protocol Streamable             `可以被输出`{    func writeTo<Target : OutputStreamType>(inout _ target: Target)}protocol CustomDebugStringConvertible   `调试用自定义字符串`{    var debugDescription: String { get }}protocol Hashable       `哈希值`{    var hashValue: Int { get }}protocol StringInterpolationConvertible `可以被\()`{    init(stringInterpolation strings: Self...)    init<T>(stringInterpolationSegment expr: T)}protocol UnicodeScalarLiteralConvertible{    associatedtype UnicodeScalarLiteralType    init(unicodeScalarLiteral value: Self.UnicodeScalarLiteralType)}protocol Comparable     ｀可以被比较｀{    func <(lhs: Self, rhs: Self) -> Bool    func ==(lhs: Self, rhs: Self) -> Bool}enum Process            `进程参数`{    static var argc: CInt { get }    static let arguments: [String]    static var unsafeArgv: UnsafeMutablePointer<UnsafeMutablePointer<Int8>> { get }}protocol CollectionType         `可以被索引`{    var count: Self.Index.Distance { get }    var first: Self.Generator.Element? { get }    var isEmpty: Bool { get }    func generate() -> Self.Generator    @warn_unused_result func prefixThrough(_ position: Self.Index) -> Self.SubSequence    @warn_unused_result func prefixUpTo(_ end: Self.Index) -> Self.SubSequence    @warn_unused_result func suffixFrom(_ start: Self.Index) -> Self.SubSequence    subscript (_ bounds: Range<Self.Index>) -> Self.SubSequence { get }    subscript (_ position: Self.Index) -> Self.Generator.Element { get }}protocol CVarArgType {}     `C 可变参数`{}