Hello dear esteemed monks,

I would like to be able to add per-package configuration parameters to the use statement of my module, but also let the module export some functions. Something like:

use My::Module { hairiness => 2 }, qw(:core frobnicate);

frobnicate( $foo ); # with hairiness = 2

[download]

I came up with the following:

package My::Module;

use parent qw(Exporter);
our @EXPORT_OK = qw(frobnicate);
our %EXPORT_TAGS = (
    core => [],
);

sub import {
    # or do it via a foreach and extra @args array
    my %setup = map { %$_ } grep { ref $_ eq 'HASH' } @_;
    @_ = grep { ref $_ ne 'HASH' } @_;

    $_[0]->per_package_setup( scalar caller, %setup );
    goto \&Exporter::import;
};

my %per_package_conf; # or our?..
sub per_package_setup {
    my ($self, $target, %options) = @_;
    # setup for target
};

sub frobnicate {
    my $x = shift;
    return $x; # TODO actually use parameters here
};

[download]

I don't want to remove exporter because it does the job and is predictable (and also has export tags).

Are there better/shorter/more common ways to do the same?

Thank you.

In reply to Mixing configuration options and exports in 'use' statement by Dallaylaen

Title:
Use:  <p> text here (a paragraph) </p>
and:  <code> code here </code>
to format your post, it's "PerlMonks-approved HTML":


  • Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!
  • Titles consisting of a single word are discouraged, and in most cases are disallowed outright.
  • Read Where should I post X? if you're not absolutely sure you're posting in the right place.
  • Please read these before you post! —
  • Posts may use any of the Perl Monks Approved HTML tags:
    a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, details, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, summary, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr
  • You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)
            For:     Use:
    & &amp;
    < &lt;
    > &gt;
    [ &#91;
    ] &#93;
  • Link using PerlMonks shortcuts! What shortcuts can I use for linking?
  • See Writeup Formatting Tips and other pages linked from there for more info.