How to parse array from description in Swift 4?

Question

I\'m learning Swift 4, and I have an algorithm that output the base 64 description of an array, like that:

extension String {

    func fromBase64()         


        

Answer 1

Here is the way you can convert your string into Int array:

var toString = output.fromBase64() //"[1, 2, 4, 65]"
if let str = toString {
    let chars = CharacterSet(charactersIn: ",][ ")
    let split = str.components(separatedBy: chars).filter { $0 != "" }.flatMap { Int($0)}
    print(split)  //[1, 2, 4, 65]
}