BigHashSet for x86

bigHash.cs

  public class BigHashSet<T>
    {
        int count = 0;
        private List<HashSet<T>> hashes = new List<HashSet<T>>();
        public void Add(T item)
        {
            int pos = count / 10000000;
            if (pos >= hashes.Count)
            {
                hashes.Add(new HashSet<T>());
            }
            for (int i = 0; i < pos; i++)
            {
                if (hashes[i].Contains(item))
                {
                    return;
                }
            }
            if (hashes[pos].Add(item))
            {
                count++;
            }
        }

        public long Count()
        {
            long res = 0;
            foreach (var item in hashes)
            {
                res += item.Count;
            }
            return res;
        }

        public void ToFile(string filename, Encoding encoding)
        {
            File.WriteAllText(filename, "", encoding);
            foreach (var item in hashes)
            {
                File.AppendAllLines(filename, item.Cast<string>(), encoding);
            }
        }

    }