base - Establish IS-A relationship with base class at com
pile 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 the fields manpage 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, defined by
base.pm'.
HISTORY
This module was introduced with Perl 5.004_04.
SEE ALSO
the fields manpage
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