[REBOL] Re: Ackermann (was Re: language shoot-out)
From: joel:neely:fedex at: 6-Nov-2002 16:32
Hi, Romano,
WARNING: Uneducated guess ahead...
Romano Paolo Tenca wrote:
> What i do not understand well is why this stops at 1374:
>
...
> result: ack41 m - 1 ack41 m n - 1
...
> and this stops at 2181 (ack41 3 9)
>
...
> f2: ack41 m n - 1
> result: ack41 m - 1 f2
I might guess that in the earlier case, the left-hand eval of ACK41
is in some sense pending while the right-hand eval is being pursued,
and thereby consuming some resources.
In the second case, the eval of ACK41 M N - 1 is allowed to complete
(with the result cached) prior to initiating the second eval of ACK41.
Concurrent vs. serial.
-jn-
--
----------------------------------------------------------------------
Joel Neely joelDOTneelyATfedexDOTcom 901-263-4446
