HashTableSubscript.swift

struct HashTable<Key: Hashable, Value> {
  
  // Prior Hash Table Implementation 
  
    func model(with element: Key) -> String? {
        switch element {
        case is String:
            return String(describing: element)
        case is Int:
            let stringElement = String(describing: element)
            return stringElement
        default:
            return nil
        }
    }
    
    subscript(key: Key) -> Value? {
        get {
            return value(for: key)
        }
        set {
            if let value = newValue {
                updateValue(value, forKey: key)
            } else {
                removeValue(for: key)
            }
        }
    }
}