You might take a look at
http://search.cpan.org/~dconway/Class-Multimethods-1.70/ which does a
perl-level implementation of multimethods. Does this resolve these
overload issues? (For what it is worth, the C Object System, COS, support
multimethod resolution and so using it for PDL::NextGen might avoid or
mitigate this problem...)
--Chris
On Tue, Oct 25, 2016 at 10:30 AM, Chris Marshall <devel.chm...@gmail.com>
wrote:
> On re-reading, I think the problem we're really discussing here is
> the operator overloading and the difficulty seems to be because the
> overload resolution doesn't handle selection between two classes.
>
> It is this that "forces" the result to be PDL or MyPDL. I'm not sure
> a real solution is possible save implementing overload using multi-methods.
>
> --Chris
>
>
> On Mon, Oct 24, 2016 at 1:30 PM, Chris Marshall <devel.chm...@gmail.com>
> wrote:
>
>> Thanks for the additional clarification for context---what a mess!
>>
>> From your example, it seems that the current PDL approach for OO via
>> "has-a" doesn't work but my question is what method would work? Is there
>> an example of an OO language or framework that can be shown to work for
>> this type of problem? Is the problem with PDL, perl5, both, neither?
>>
>> --Chris
>>
>>
>> On Mon, Oct 24, 2016 at 12:51 PM, Diab Jerius <djer...@cfa.harvard.edu>
>> wrote:
>>
>>> On Mon, Oct 24, 2016 at 12:43 PM, Diab Jerius <djer...@cfa.harvard.edu>
>>> wrote:
>>> > initialize() currently must assume that object construction can be
>>> > done without any arguments to the constructor. That's inappropriate
>>> > in some instances (as described above).
>>>
>>> And once more, to clarify...
>>>
>>> initialize() is not passed any context, so must assume that object
>>> attributes have defaults which are context independent. This is not
>>> always appropriate.
>>>
>>
>>
>
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