I have problems to see a case where my approach doesn't work.°

A use is a require + import and the require part is skipped after checking %INC

(Of course you need to place Foo::Bar before Foo if the latter uses the former.)

But if you have a special example in mind where this breaks, please share.

update

> if a use Foo::Bar ; is executed after the usurping module test_v1.pm has been loaded

as demonstrated you can use Foo::Bar as soon as the BEGIN block sets %INC.

Cheers Rolf
(addicted to the Perl Programming Language :)
Wikisyntax for the Monastery

update

°) well if the module is written in a way that BEGIN blocks expect to be run after the use (i.e. in the inherent do FILE), then yes could get bitten by order problems. The OP didn't sound like his intention was to simulate meta programming magics.

Otherwise he should do a BEGIN { eval $MODULE_CODE; package->import() }

Please note that this code could be encapsulated in a special module.

Something like use FromData "__MODULE_NAME__" could extract the Modules_Code from the DATA section (delimited by __MODULE_NAME__ ) and import it into the upper namespace.

... or ...

Another - probably more elegant - option is to provide a loader function as value in %INC . use would evaluate this function to get the MODULE_CODE.

You can also insert hooks into the import facility by putting Perl code directly into the @INC array. There are three forms of hooks: subroutine references, array references, and blessed objects.

In reply to Re^3: Multiple Packages in a Module? (%INC) by LanX
in thread Multiple Packages in a Module? by Anonymous Monk

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.