reference to object method

[Uri Guttman]

JB> Ah, is it time for the "Your mother ..." jokes?

yes, yapc::na is approaching fast!

uri

 

[Hobo Salesman]

yeah, the OP's original issue is long lost in my skull. and i bet he
isn't reading this thread anymore!

Actually I am, but lurking. I don't think my skills are the level of a
lot of people here and I'm still getting familiar with the group so I'm
doing more reading than posting.

 

[Sherm Pendley]

Actually I am, but lurking. ... I'm still getting familiar with the group
so I'm doing more reading than posting.

An *excellent* attitude that's far too rare. Congratulations - you're one of
handful of Google Groups users who have managed to climb out of my killfile.

sherm--

 

[Hobo Salesman]

An *excellent* attitude that's far too rare. Congratulations - you're one of
handful of Google Groups users who have managed to climb out of my killfile.

Don't write off google groups users too soon, some (like me) know how
usenet works but have trouble finding a usenet provider that allows
posting. I also like being able to use my google groups account from
any machine. The downside is the extremely lousy interface, I can't
even figure out how to show the thread structure, it's all in a big
linear list.

 

[Charles DeRykus]

Can I store a reference to an object method in a scalar and use that to
call the method? Something like (and I'm sure this is wrong):

$methodRef = \$object->method();

No, that invokes the method and gives you a reference to the return
value (or last return value if the method returns a list)*.

* See Recipe 11.8 "Creating References to Methods" in the `Perl
Cookbook`. The recipe explains why UNIVERSAL's `can` method falls
short as well.

And, as mentioned though, the working solutions don't preserve inheritance.

 

[Ben Morrow]

No, that invokes the method and gives you a reference to the return
value (or last return value if the method returns a list)*.

The method doesn't return a list. ${} provides scalar context.

(Yes, I know I've argued against the 'there are no lists in scalar
context' model in the past. I accepted that it mekes it easier for most
people to understand what's going on )

Ben