Can someone explain this error?

[Bill Baxter]

On Wed, Sep 24, 2008 at 8:26 AM, Sean Kelly <sean at invisibleduck.org> wrote:
>    class C
>    {
>        this() {}
>        this( int x, int y ) {}
>    }
>
>    void main()
>    {
>        auto c = alloc!(C);
>        auto d = alloc!(C)( 1, 2 );
>    }
>
>    T alloc(T, Params ...)( Params params )
>    {
>        return new T( params );
>    }
>
> $ dmd test
> test.d(10): Error: expected 0 arguments, not 2
>

This is the thing Walter made work in D2 but not D1.
  http://d.puremagic.com/issues/show_bug.cgi?id=493

You can sorta work around it by using nested templates. Then you can
get a calling syntax like

  alloc!(C).D1_4ever;
  alloc!(C).D1_4ever(1,2);

--bb