import Foundation

func varProcessor(_ n: Any, intProcess: (Int) -> Void, strProcess: (String) -> Void) {
    let nInt = n as? Int ?? 0 // 如果n是整形数，nInt将会被赋予n的值
    let nString = n as? String ?? "" // 如果n是字符串，nString将会被赋予n的值
    switch n{
    case is Int:
        // 如果n是整型，这里的代码将会被执行
        intProcess(nInt)
    case is String:
        // 如果n是字符串，这里的代码将会被执行
        strProcess(nString)
    default:
        print("An error occurred.")
    }
}

let test: [Any] = [0, 2, 0.2, "Hello"]

for item in test {
    varProcessor(item, intProcess: {print("The value of n is \(String($0))")}, strProcess: {print("The length of n is \($0.count)")})
}