ComputingIndex.swift

struct HashTable<Key: Hashable, Value> {
  // Hash table setup 
  func index(for key: Key) -> Int {
        var divisor: Int = 0
        for key in String(describing: key).unicodeScalars {
            divisor += abs(Int(key.value.hashValue))
        }
        return abs(divisor) % buckets.count
    }
}