[plt-scheme] Re: call/cc, set!, and fluid-let

On Jun 14, 2005, at 11:50 AM, David Van Horn wrote:

>  For list-related administrative tasks:
>  http://list.cs.brown.edu/mailman/listinfo/plt-scheme
>
> John Clements wrote:
>> I claim that
>> (let/cc k M0 .... (k N))
>> is equivalent to
>> (begin M0 ... N)
>> if there are no references to k in any of M0 ... or N.
>
> Almost.  One of these will consume all available memory, the other 
> will not.
>
> (let loop () (let/ec k (k (loop))))
> (let loop () (begin (loop)))

Feh!  Not Safe-for-space.

Of course, you're right.

John
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