John Cowan <cowan_at_ccil.org> writes:
> Peter Gavin scripsit:
>
>> I don't think the empty list should be self-evaluating. No other list
>> in scheme is self-evaluating, so why should the empty one be?
>
> Because it can be neither syntax (which must have a keyword) nor a function call
> (which must have at least one form). Making () self-evaluating also represents
> a return to Lisp tradition; it would be interesting to know why it was made
> *not* self-evaluating in RRRS.
I believe the reason is that otherwise, parens always mark a compound
form where the first subform somehow identifies the operator.
Generally, Scheme seems to often favor uniformity over convenience.
--
Cheers =8-} Mike
Friede, V?lkerverst?ndigung und ?berhaupt blabla
Received on Mon Jan 29 2007 - 07:57:59 UTC