From: Neil Jerram <neil@ossau.uklinux.net>
Cc: guile-user <guile-user@gnu.org>
Subject: Re: design advice on predicate name
Date: Fri, 18 Aug 2006 14:49:31 +0100 [thread overview]
Message-ID: <87hd0a2lxw.fsf@ossau.uklinux.net> (raw)
In-Reply-To: <J46IIT$8AAD8E9C32CA7D7E58BE56AE16CF686B@poste.it> (Marco Maggi's message of "Fri, 18 Aug 2006 07:42:29 +0200")
"Marco Maggi" <marco.maggi-ipsu@poste.it> writes:
> Ciao,
>
> I have two predicate functions that act upon a vector
> or matrix: the hit predicate produces a single #t/#f
> result while the map predicate produces a vector or rank
> 2 array of #t/#f values.
>
> Using generic functions I can write functions with
> math operators that act upon common numbers or vector and
> matrices without visible difference.
>
> Example: I have two predicates HIT-NAN? and MAP-NAN?
> which one it is better to call NAN?
I'm afraid I don't understand. Perhaps you could write the down for
the two possibilities that you have in mind.
> By the way: the NUMBER? predicate is supposed to return
> #t for proper number SMOBs or for any object that can
> be used as argument of math operators?
No, number? is supposed to return #t only for Guile's built-in numeric
types.
Regards,
Neil
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next prev parent reply other threads:[~2006-08-18 13:49 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-08-18 5:42 design advice on predicate name Marco Maggi
2006-08-18 13:49 ` Neil Jerram [this message]
-- strict thread matches above, loose matches on Subject: below --
2006-08-18 19:01 Marco Maggi
2006-08-19 10:37 ` Neil Jerram
2006-08-20 6:29 Marco Maggi
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