[gambit-list] anyone get schelog working with gambit-c?
Bradley Lucier
lucier at math.purdue.edu
Thu Aug 23 20:12:27 EDT 2007
On Aug 23, 2007, at 6:26 PM, |/|/ Bendick wrote:
> I understand the importance of different implementations of the same
> language having the same semantics, but are there any reasons why it
> would be a bad thing to create a language , suspiciously similar to
> scheme, where () is self evaluating?
I don't care one way or the other whether () is self-evaluating in
Scheme.
I don't *particularly* care whether the evaluation order of arguments
in a function application is unspecified or left-to-right. [1]
Gambit follows the standard in both cases; I guess I've been
debugging other people's nonstandard, broken code on Gambit for
enough years now that I don't appreciate code that relies on the
"helpful" language extensions by some implementations of self-
evaluating () and fixed left-to-right argument evaluations.
By the way, R5.97RS keeps both of these R5RS rules.
Brad
[1] The current rule that the order can be different for each
(dynamic) function application appeals to me somewhat for its beauty,
and I also find it interesting that at one time each time you rebuilt
Gambit from Scheme sources the compiler or interpreter (I don't
remember which) switched from left-to-right to right-to-left
evaluation of arguments in a function application; this may still be
true.
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