Swift encode tuple using NSCoding

Question

Is it possible to store a tuple using NSCoding? I have a tuple like ((UInt8, UInt8), (UInt8, UInt8)). But aCoder.encodeObject(myTuple)

Answer 1

I just want to share my code which has some updates based on Ian's code. I used mine to create a list of category / subcategory of elements.

class catSubcatOption: NSObject, NSCoding  {

var element: (x: String, y: String)!

override init() {

}

public func encode(with aCoder: NSCoder) {
    aCoder.encode(element.category, forKey: "category")
    aCoder.encode(element.subcategory, forKey: "subcategory")
}

required init(coder decoder: NSCoder) {
    let category = decoder.decodeObject(forKey: "category") as! String
    let subcategory = decoder.decodeObject(forKey:"subcategory") as! String
    element = (category,subcategory)
} }