How can I make one class extend another one?

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

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Re: How can I make one class extend another one? by chromatic (Archbishop) on Apr 20, 2000 at 20:40 UTC
Inheritance is very easy in Perl. Assuming we have a class PerlMonk, we could create a new class called vroom that extends the first: `package vroom; @ISA = qw ( PerlMonk );` [download] From then on, for any method called on an instance of vroom that isn't defined immediately in the class, Perl will search the classes named in @vroom::ISA for those methods. That is, PerlMonk::dispense_wisdom() is available via $vroom->dispense_wisdom() even if there is no vroom::dispense_wisdom(). Note that the @ISA array can contain lots of parent classes. Note also that they are searched left-to-right, depth first.	[reply] [d/l]
Re: How can I make one class extend another one? by brother ab (Scribe) on Sep 19, 2000 at 09:20 UTC
`package Child; use base qw(Mother Father);` [download] base pragma not only includes extended classes in @INC, but 'require's them. Additionally, it is integrated with fields pragma (if you like strict data members protection)	[reply] [d/l]