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UNIVERSAL::exports(3pm) User Contributed Perl Documentation UNIVERSAL::exports(3pm)

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

2018-07-11 perl v5.26.2