Hi Luis,
This is a long-standing issue in PDL. If your code creates a PDL::somefunction,
there is indeed a risk that someone else’s code also makes a PDL::somefunction,
and there will be a problem. Using “warnings” in both modules will at least
tell you it happened.
A way to dodge this is to make a subclass of PDL called e.g. PDL::Other that
all your code’s objects are in, and instead make PDL::Other::somefunction.
You’d create objects with PDL::Other->new(@args_as_normal). This is tested in
t/subclass.t and ought to work, including that any operations’ results will
also be in that subclass. If you try it and find any surprises, please say so
on here! Then I can capture that into t/subclass.t and fix it.
Best regards,
Ed
________________________________
From: Luis Mochan <moc...@icf.unam.mx>
Sent: Sunday, January 28, 2024 2:41:27 PM
To: perldl <pdl-general@lists.sourceforge.net>; perldl
<pdl-de...@lists.sourceforge.net>
Subject: [Pdl-devel] naming conventions
Hi,
It is sometimes convenient to call my own functions that operate on ndarrays
using the object notation: $ndarray->somefunction. A simple way to do
it is to define the function within the PDL name space as in
sub PDL::somefunction($self,...){...}
Is there a better way? Adding functions to a package as a user of that
package is risky as there might be a name collision with internal
functions actually defined within the PDL packages. Is there a naming
convention in PDL to avoid the collision? I vaguely recall there are
some subtleties if one wants to make new classes derived from PDL.
Regards,
Luis
--
o
W. Luis Mochán, | tel:(52)(777)329-1734 /<(*)
Instituto de Ciencias Físicas, UNAM | fax:(52)(777)317-5388 `>/ /\
Av. Universidad s/n CP 62210 | (*)/\/ \
Cuernavaca, Morelos, México | moc...@fis.unam.mx /\_/\__/
GPG: 791EB9EB, C949 3F81 6D9B 1191 9A16 C2DF 5F0A C52B 791E B9EB
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