Does inheritance via @ISA automagically handle "use"-ing the package?

hartzell has asked for the wisdom of the Perl Monks concerning the following question:

When perl searchers back through the class hiearchy specified by the ISA arrays, will it "use" the modules if they haven't already been imported/required/used? In other words, is it enough to say:

@ISA = qw(Dog::Poodle);

or must (should, ought) I do:

use Dog::Poodle;
@ISA = qw(Dog::Poodle);

Thanks, g.

Comment on Does inheritance via @ISA automagically handle "use"-ing the package?

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Re: Does inheritance via @ISA automagically handle "use"-ing the package? by Happy-the-monk (Canon) on Aug 22, 2004 at 21:41 UTC
do try `use base qw(Dog::Poodle);` too. Then you needn't worry about a use statement before. Cheers, Sören	[reply]
Re: Does inheritance via @ISA automagically handle "use"-ing the package? by cLive ;-) (Prior) on Aug 22, 2004 at 21:39 UTC
What results did your get when you tested this idea? cLive ;-)	[reply]
Re: Does inheritance via @ISA automagically handle "use"-ing the package? by bart (Canon) on Aug 23, 2004 at 08:35 UTC
No, that's why they came up with `use base` — it basically does both tasks at once — and at BEGIN time, too.	[reply]