Re: the forward method [dynamic vs. static typing]

[address@hidden]

Ken Shan writes:
> On 2003-12-10T16:35:25-0500, FranklinChen@cmu.edu wrote:
> > >     data SuperList a = SuperList a (SuperList [a])
> > I'm curious what you think about the following.
> 
> I think the following, but C++ can't:
> 
> template <class T>
> struct super_list
> {
>     T t;
>     super_list<vector<T> > children;
> };

You need a pointer:

template <class T>
struct super_list
{
    T t;
    super_list<vector<T> > *children;
};

works perfectly well.  (Implementation of cool algorithms using
polymorphic recursion left to the reader.)

Or do you consider this not faithful to your intentions?

-- 
Franklin