redhat man page for base

base(3pm)						 Perl Programmers Reference Guide						 base(3pm)

NAME
       base - Establish IS-A relationship with base class at compile time

SYNOPSIS
	   package Baz;
	   use base qw(Foo Bar);

DESCRIPTION
       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 have 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.

       If any of the base classes are not loaded yet, base silently "require"s them.  Whether to "require" a base class package is determined by
       the absence of a global $VERSION in the base package.  If $VERSION is not detected even after loading it, <base> will define $VERSION in
       the base package, setting it to the string "-1, set by base.pm".

HISTORY
       This module was introduced with Perl 5.004_04.

SEE ALSO
       fields

perl v5.8.0							    2002-06-01								 base(3pm)