Is there a way for a function to return itself in D?

[Steven Schveighoffer]

"Simen Kjaeraas" <simen.kjaras at gmail.com> wrote in message 
news:op.ui0ff1np1hx7vj at biotronic.osir.hihm.no...
> Like the subject says, I wonder if it's possible for a function to return 
> itself.
> No matter how I think of this, I end up with an endless recursive function
> declaration. Creating a functor that does this is simple, so why not a 
> function?
>

Nope.  Because the type of the function must include all the functions you 
might call.

i.e.

function(int x) function(int x)

is a different type than

function(int x) function(int x) function(int x)

For a functor it's simple.  You are not returning a function, but a pointer 
to a possibly not fully-defined object, so the type does not need to be 
fully specified before it is used.

You would need to be able to declare a function type before defining it in 
order to be able to do this.

-Steve