ArrayLiteralConvertible

实现变量和方法

typealias Element

public init(arrayLiteral elements: Self.Element...)

例子

struct ImplS: ArrayLiteralConvertible {    typealias Element = Int    init(arrayLiteral elements: ImplS.Element...) {        for element in elements{            print(element)        }    }}let str1: ImplS = [1,2,3] //依次打印

瞅着贼别扭，看别人这么写

struct MyArray<T>: ArrayLiteralConvertible {    init(arrayLiteral elements: T...) {        for element in elements{            print(element)        }    }}let arr: MyArray<Int> = [1,2,3] //依次打印

这回好看了