NAME

Importer::Zim - Import functions without namespace pollution

VERSION

version 0.10.1

SYNOPSIS

use Importer::Zim 'Scalar::Util' => 'blessed';
use Importer::Zim 'Scalar::Util' => 'blessed' => { -as => 'typeof' };

use Importer::Zim 'Mango::BSON' => ':bson';

use Importer::Zim 'Foo' => { -version => '3.0' } => 'foo';

use Importer::Zim 'SpaceTime::Machine' => [qw(robot rubber_pig)];

DESCRIPTION

"Because, when you create a giant monster of doom,
no matter how cute, you have to... you have to... I don't know."
  – Zim

This pragma imports subroutines from other modules in a clean way. "Clean imports" here mean that the imported symbols will be available for compilation and will not pollute the user namespace at runtime.

Importer::Zim relies on pluggable backends which give a precise meaning to "clean imports". For example, Importer::Zim::Lexical uses lexical subs that are bound to the surrounding lexical scope and never touch the target namespace.

By default, Importer::Zim looks at package variables @EXPORT, @EXPORT_OK and %EXPORT_TAGS to decide what are exportable subroutines. It tries its best to implement a behavior akin to Exporter without the corresponding namespace pollution.

BACKENDS

Importer::Zim will try the following backends in order until one succeeds to load.

• Importer::Zim::Lexical - symbols are imported as lexical subroutines

• Importer::Zim::EndOfScope - symbols are imported to caller namespace while surrounding scope is compiled

• Importer::Zim::Unit - symbols are imported to caller namespace while current unit is compiled

Read also "WHICH BACKEND?" in Importer::Zim::Cookbook.

METHODS

import

Importer::Zim->import($class => @imports);
Importer::Zim->import($class => \%opts => @imports);

FUNCTIONS

export_to

Importer::Zim::export_to($target, %imports);
Importer::Zim::export_to($target, \%imports);

DEBUGGING

You can set the IMPORTER_ZIM_DEBUG environment variable to get some diagnostics information printed to STDERR.

IMPORTER_ZIM_DEBUG=1

SEE ALSO

zim

Importer::Zim::Cookbook

Importer and Lexical::Importer

lexically

AUTHOR

Adriano Ferreira <ferreira@cpan.org>

COPYRIGHT AND LICENSE

This software is copyright (c) 2017-2018 by Adriano Ferreira.

This is free software; you can redistribute it and/or modify it under the same terms as the Perl 5 programming language system itself.

cpanm Importer::Zim

perl -MCPAN -e shell
install Importer::Zim