phpman > perldoc > namespace::autoclean

NAME
    namespace::autoclean - Keep imports out of your namespace

VERSION
    version 0.29

SYNOPSIS
        package Foo;
        use namespace::autoclean;
        use Some::Package qw/imported_function/;

        sub bar { imported_function('stuff') }

        # later on:
        Foo->bar;               # works
        Foo->imported_function; # will fail. imported_function got cleaned after compilation

DESCRIPTION
    When you import a function into a Perl package, it will naturally also be available as a method.

    The "namespace::autoclean" pragma will remove all imported symbols at the end of the current
    package's compile cycle. Functions called in the package itself will still be bound by their
    name, but they won't show up as methods on your class or instances.

    This module is very similar to namespace::clean, except it will clean all imported functions, no
    matter if you imported them before or after you "use"d the pragma. It will also not touch
    anything that looks like a method.

    If you're writing an exporter and you want to clean up after yourself (and your peers), you can
    use the "-cleanee" switch to specify what package to clean:

      package My::MooseX::namespace::autoclean;
      use strict;

      use namespace::autoclean (); # no cleanup, just load

      sub import {
          namespace::autoclean->import(
            -cleanee => scalar(caller),
          );
      }

WHAT IS AND ISN'T CLEANED
    "namespace::autoclean" will leave behind anything that it deems a method. For Moose classes,
    this the based on the "get_method_list" method on from the Class::MOP::Class. For non-Moose
    classes, anything defined within the package will be identified as a method. This should match
    Moose's definition of a method. Additionally, the magic subs installed by overload will not be
    cleaned.

PARAMETERS
  -also => [ ITEM | REGEX | SUB, .. ]
  -also => ITEM
  -also => REGEX
  -also => SUB
    Sometimes you don't want to clean imports only, but also helper functions you're using in your
    methods. The "-also" switch can be used to declare a list of functions that should be removed
    additional to any imports:

        use namespace::autoclean -also => ['some_function', 'another_function'];

    If only one function needs to be additionally cleaned the "-also" switch also accepts a plain
    string:

        use namespace::autoclean -also => 'some_function';

    In some situations, you may wish for a more *powerful* cleaning solution.

    The "-also" switch can take a Regex or a CodeRef to match against local function names to clean.

        use namespace::autoclean -also => qr/^_/

        use namespace::autoclean -also => sub { $_ =~ m{^_} };

        use namespace::autoclean -also => [qr/^_/ , qr/^hidden_/ ];

        use namespace::autoclean -also => [sub { $_ =~ m/^_/ or $_ =~ m/^hidden/ }, sub { uc($_) == $_ } ];

  -except => [ ITEM | REGEX | SUB, .. ]
  -except => ITEM
  -except => REGEX
  -except => SUB
    This takes exactly the same options as "-also" except that anything this matches will *not* be
    cleaned.

CAVEATS
    When used with Moo classes, the heuristic used to check for methods won't work correctly for
    methods from roles consumed at compile time.

      package My::Class;
      use Moo;
      use namespace::autoclean;

      # Bad, any consumed methods will be cleaned
      BEGIN { with 'Some::Role' }

      # Good, methods from role will be maintained
      with 'Some::Role';

    Additionally, method detection may not work properly in Mouse classes in perls earlier than
    5.10.

SEE ALSO
    *   namespace::clean

    *   B::Hooks::EndOfScope

    *   namespace::sweep

    *   Sub::Exporter::ForMethods

    *   Sub::Name

    *   Sub::Install

    *   Test::CleanNamespaces

    *   Dist::Zilla::Plugin::Test::CleanNamespaces

SUPPORT
    Bugs may be submitted through the RT bug tracker
    <https://rt.cpan.org/Public/Dist/Display.html?Name=namespace-autoclean> (or
    bug-namespace-autoclean AT rt.org <mailto:bug-namespace-autoclean AT rt.org>).

    There is also a mailing list available for users of this distribution, at
    <http://lists.perl.org/list/moose.html>.

    There is also an irc channel available for users of this distribution, at "#moose" on
    "irc.perl.org" <irc://irc.perl.org/#moose>.

AUTHOR
    Florian Ragwitz <rafl AT debian.org>

CONTRIBUTORS
    *   Karen Etheridge <ether AT cpan.org>

    *   Graham Knop <haarg AT haarg.org>

    *   Dave Rolsky <autarch AT urth.org>

    *   Kent Fredric <kentfredric AT gmail.com>

    *   Tomas Doran <bobtfish AT bobtfish.net>

    *   Shawn M Moore <cpan AT sartak.org>

    *   Felix Ostmann <sadrak AT cpan.org>

    *   Chris Prather <chris AT prather.org>

    *   Andrew Rodland <arodland AT cpan.org>

COPYRIGHT AND LICENCE
    This software is copyright (c) 2009 by Florian Ragwitz.

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