Bertrand Bordage <bordage.bertr...@gmail.com> writes:
> 2011/8/17 David Kastrup <d...@gnu.org>
>
> Bertrand Bordage <bordage.bertr...@gmail.com> writes:
>
>
> > This would be great if Han-Wen decides to keep it like that.
> > Otherwise there is really a lot of work, with many shortcuts to
> > define.
> > to_boolean (scm_is_pair (x))
>
>
> That one would be wrong since scm_is_pair already returns a C
> boolean.
>
>
> I was thinking about scm_pair_p ()...
> This is typically the kind of mistakes that should be solved.
> Shame on me, I won't do it again.
>
> Where did you find SCM_CONSP ?
> I don't see it in guile's reference. Maybe something to add to the CG
> ?
Guile reference manual for Guile 1.8, "Pair data". It is even indexed.
What version of the Guile manual are you using? To quote:
Guile implements pairs by mapping the CAR and CDR of a pair directly
into the two words of the cell.
-- Macro: int SCM_CONSP (SCM X)
Return non-zero iff X is a Scheme pair object.
-- Macro: int SCM_NCONSP (SCM X)
The complement of SCM_CONSP.
--
David Kastrup
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