Maybe http://en.wikipedia.org/wiki/Metaobject is a good start for reading up on
what a MOP (Meta-Object Protocol) is.
Liz
===============
On 28 Oct 2013, at 14:17, Richard Hainsworth <rich...@rusrating.ru> wrote:
> Moritz,
>
> You are the everflowing font of knowledge. Thanks.
>
> However, I read the synopsis on objects and did not find the .get_value
> method.
>
> Pardon the ignorance, but what is "the MOP". I sometimes get floored by the
> jargon.
>
> I read about the indirection for methods, but how does that relate to
> attributes?
>
> Richard
>
> On 10/28/2013 01:45 PM, Moritz Lenz wrote:
>> Hi Richard,
>>
>> On 10/28/2013 08:07 AM, Richard Hainsworth wrote:
>>> Perhaps I am using class incorrectly, but I set up a class, then change
>>> some of the parameters in an instance of the class. Next I would like to
>>> discover what the current state of the instance is.
>>
>> There is a way to introspect through the MOP:
>>
>> class A { has $!x = 42; };
>> my $obj = A.new;
>> say A.^attributes[0].get_value($obj);
>>
>> It's not straight forwards, and that's actually a feature :-)
>>
>> The usual way to go is through the accessors, and indirect method calls with
>> $obj."$name"();
>>
>> Cheers,
>> Moritz
>
