[tpm] Perl module question

[Richard Dice]

Shaun,


> If you don't need the robustness
> of object oriented programming, you can skip the step of building
> an instance via a construcor (new()) and simply substitute the
> pointer arrow (->) with colons (::). So for instance...
>
> my $result_0 = Your::Procedural::function_0($var1, $var2);
> my $result_1 = Your::Procedural::function_1($result_0);


Yes, certainly.  I only alluded to it in my email, when I talked about
procedural vs. object oriented Perl module programming.  I avoided going
into these details on it because they actually come out when you read the
perlboot link that I sent.

The only caveat is that you will have to state the full module
> name as part of the function call each time, just as above. This
> will get around having to shift off the package name, or blessed
> instance as the case may be.


Unless you start getting into importer/exporter stuff.  But that, as they
say, is another story. :-)

Cheers,
Richard


That said however, it's very much worthwhile to learn object
> oriented programming methodology and techniques. In the long run
> this will make your code (especially larger applications) *much*
> more maintainable and extensible. Understanding object
> "inheritance" especially is extremely valuable, although I would
> caution you to learn what "multiple inheritance" is, and both
> why and how to avoid it.
>
> Good luck and happy reading. :)
> --
>     Shaun Fryer
>
> On Fri, Sep 07, 2007 at 12:20:29PM -0400, Madison Kelly wrote:
> > Hi all,
> >
> >    I am quite the module n00b, so please be gentle. :)
> >
> >    I've got a few small, simple modules I've written that handle some
> > simple functions I use often. What I want to be able to do though is:
> >
> > my $foo=My::Module->new();
> >
> >    Then be able to call the function/subroutines in there like this:
> >
> > my $value=$foo->function($var1, $var2);
> >
> >    I had tried to do:
> >
> > my $value=My::Module->function($var1, $var2);
> >
> >    But the first value picked up in the function is the module name... I
> > don't think I should have to say in the module
> >
> > sub function
> > {
> >       my ($null, $var1, $var2)=@_;
> >       ...
> > }
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