CastToTheAnyAndBack.swift

//: Playground - noun: a place where people can play

import Foundation

func cast<T>(any: Any) -> T {
    print(T.self) // Optional<String>
    print(any) // nil
    let value = any as! T
    //Could not cast value of type 'Swift.Optional<Swift.String>' (0x11ad4b028) to 'Swift.String' (0x1118024c8).
    print(value)
    return value
}

let value = .None as String?
let any = value as Any

let castedBacl: String? = cast(any)