Index for Section 3

Alphabetical listing for B

Bottom of page

base(3)
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 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, set by base.pm".

HISTORY
  This module was introduced with Perl 5.004_04.

SEE ALSO
  the fields manpage

Index for Section 3

Alphabetical listing for B

Top of page