This is an OO-based question that I've struggled with ever since I decided to dive into the OO-world, and still haven't really figured out. Maybe one of you can help my understanding.

The basic set-up is as follows:

Say I have three classes, Blah, Blah::DB, and Blah::Project:

Blah: this is the main program.
Blah::DB: contains all sorts of common functions I use to retrieve 'stuff' from a database.
Blah::Project: contains functions that I use to deal with 'projects'.

In Blah.pm, I'm doing the following: 
my $db = Blah::DB->new(
  database => 'blahDB',
  user     => 'scott',
  password => 'p455w0rd'
);

[download]
Which is peachy, because now I can do things like $db->tablelist(); and whatnot.

The problem is: can I inherit the functions I use in Blah::DB into my Blah::Project package? Maybe all of my 'projects' are stored in a database, and I want to retrieve them and them store them in a 'project' object. I can't figure out a way to use any of the Blah::DB functions, however, without either:

a) creating a new Blah::DB object from within Blah::Project, or
b) pass my Blah::DB object to Blah::Project when I create a Blah::Project object (my $proj = Blah::Project->new($db);).

Neither of these seem elegant.

Can someone point me in the right direction?

-s.

In reply to OO, inheriting functions from other packages by sschneid

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