将类型直接分配给Swift中的类型包装

struct AnyCollection<Element>: Collection {
    // 实现Collection协议的方法
    // ...
}

let intArray: [Int] = [1, 2, 3]
let stringArray: [String] = ["Hello", "World"]

let anyIntArray: AnyCollection<Int> = AnyCollection(intArray)
let anyStringArray: AnyCollection<String> = AnyCollection(stringArray)

let anyValue: Any = 42
let anyArray: [Any] = [1, "Hello", 3.14]

for value in anyArray {
    switch value {
    case let intValue as Int:
        print("Int value: \(intValue)")
    case let stringValue as String:
        print("String value: \(stringValue)")
    default:
        print("Unknown value")
    }
}