NAME¶
UNIVERSAL::exports - Lightweight, universal exporting of variables
SYNOPSIS¶
package Foo;
use UNIVERSAL::exports;
# Just like Exporter.
@EXPORT = qw($This &That);
@EXPORT_OK = qw(@Left %Right);
# Meanwhile, in another piece of code!
package Bar;
use Foo; # exports $This and &That.
DESCRIPTION¶
This is an alternative to Exporter intended to provide a universal, lightweight
subset of its functionality. It uses Exporter::Lite, so look there for
details.
Additionally, "exports()" is provided to find out what symbols a
module exports.
UNIVERSAL::exports places its methods in the UNIVERSAL namespace, so there is no
need to subclass from it.
Methods¶
UNIVERSAL::exports has two public methods,
import() derived from
Exporter::Lite, and
exports().
- import
-
Some::Module->import;
Some::Module->import(@symbols);
This is Exporter::Lite's import() method. Look in Exporter::Lite for
details.
- exports
-
@exported_symbols = Some::Module->exports;
Some::Module->exports($symbol);
Reports what symbols are exported by Some::Module. With no arguments, it
simply returns a list of all exportable symbols. Otherwise, it reports if
it will export a given $symbol.
DIAGNOSTICS¶
- '"%s" is not exported by the %s module'
- Attempted to import a symbol which is not in @EXPORT or
@EXPORT_OK.
- 'Can\'t export symbol: %s'
- Attempted to import a symbol of an unknown type (ie. the
leading $@% salad wasn't recognized).
AUTHORS¶
Michael G Schwern <schwern@pobox.com>
BUGS and ISSUES¶
Please report bugs and issues via <
http://rt.cpan.org>
LICENSE and COPYRIGHT¶
Copyright 2001, 2006 Michael G Schwern
This program is free software; you can redistribute it and/or modify it under
the same terms as Perl itself.
See <
http://www.perl.com/perl/misc/Artistic.html>
SEE ALSO¶
Other ways to Export: Exporter, Exporter::Lite, Sub::Exporter, Exporter::Simple
The Perl 6 RFC that started it all: <
http://dev.perl.org/rfc/257.pod>
More UNIVERSAL magic: UNIVERSAL::require