base - Establish IS-A relationship with base class at compile time
package Baz;
use base qw(Foo Bar);
Roughly similar in effect to
BEGIN {
require Foo;
require Bar;
push @ISA, qw(Foo Bar);
}
Will also initialize the %FIELDS hash if one of the base classes has it. Multiple inheritance of %FIELDS is not supported. The 'base' pragma will croak if multiple base classes has a %FIELDS hash. See fields for a description of this feature.
When strict 'vars' is in scope base also let you assign to @ISA without having to declare @ISA with the 'vars' pragma first.
This module was introduced with Perl 5.004_04.