Classes and templates

[Hefferman via Digitalmars-d]

Hello,

I've been trying to implement a class for sorting which accepts 
arrays which "different" data types. Hard to describe, here's my 
example (filename sorting.d):

[code]
import std.random;

void main()
{
     immutable uint N = 10_000;

     double[] arr = new double[](N);
     for (uint k = 0; k < N; k++) arr[k] = uniform(0, N);

     BubbleSort b = new BubbleSort();
     b.Sort(arr);
}

public class BubbleSort(T)
{
     private T[] a;
     private uint n;

     public void Sort(T)(T[] a) {
         this.a = a;
         n = a.length;
         bubblesort();
     }

     private void bubblesort() {
         bool sorted;

         do {
             sorted = true;
             for (uint k = 0; k < n; k++) {
                 if (a[k] > a[k+1]) {
                     T tmp = a[k];
                     a[k] = a[k+1];
                     a[k+1] = tmp;
                     sorted = false;
                 }
             }
             n--;
         } while (!sorted);
     }
}
[/code]

Whenever I try to compile this, it throws an error "class 
sorting.BubbleSort(T) is used as a type". How do I get a 
workaround?