Module::Loaded(3pm)

✨ NAME ✨

Okay so this is Module::Loaded(3pm), straight outta the Perl Programmers Reference Guide, and it is literally here to mark modules as loaded or unloaded. Bestie, it's giving tiny-but-powerful utility module energy 💅

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🦋 SYNOPSIS 🦋

Peep the whole flow, no cap:

use Module::Loaded;

$bool = mark_as_loaded('Foo');   # Foo.pm is now marked as loaded
$loc  = is_loaded('Foo');        # location of Foo.pm set to the
                                 # loaders location
eval "require 'Foo'";            # is now a no-op

$bool = mark_as_unloaded('Foo'); # Foo.pm no longer marked as loaded
eval "require 'Foo'";            # Will try to find Foo.pm in @INC

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🌸 DESCRIPTION 🌸

So when you're testing applications, you often find yourself needing to provide functionality in your test environment that would usually be provided by external modules. Classic, honestly.

And rather than munging the %INC by hand to mark these external modules as loaded — so they are not attempted to be loaded by perl — this module offers you a very simple way to mark modules as loaded and/or unloaded. Slay 💖

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🎀 FUNCTIONS 🎀

🫶 $bool = mark_as_loaded( PACKAGE );

Marks the package as loaded to perl. PACKAGE can be a bareword or string.

If the module is already loaded, mark_as_loaded will carp about this and tell you from where the PACKAGE has been loaded already. Not it being dramatic, but also kinda valid 💀

🫶 $bool = mark_as_unloaded( PACKAGE );

Marks the package as unloaded to perl, which is the exact opposite of mark_as_loaded. PACKAGE can be a bareword or string.

If the module is already unloaded, mark_as_unloaded will carp about this and tell you the PACKAGE has been unloaded already. It really said "read the room" 😭

🫶 $loc = is_loaded( PACKAGE );

is_loaded tells you if PACKAGE has been marked as loaded yet. PACKAGE can be a bareword or string.

It returns falls if PACKAGE has not been loaded yet — yes, falls is the exact word the page uses, bestie, I am not fixing it — and the location from where it is said to be loaded on success. Iconic in a chaotic way 🌀

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🐛 BUG REPORTS 🐛

Please report bugs or other issues to <bug-module-loaded@rt.cpan.org<gt>. — okay yes, that is exactly how it's written, extra <gt> and all, no cap 🙈

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👑 AUTHOR 👑

This module by Jos Boumans <kane@cpan.org>.

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🌈 COPYRIGHT 🌈

This library is free software; you may redistribute and/or modify it under the same terms as Perl itself.

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Signed off by perl v5.42.3 on 2026-11-03, and this whole page is Module::Loaded(3pm) — mwah 💋✨