Acme::CPANModules::PickingRandomItemsFromList - Picking random items from a list


This document describes version 0.002 of Acme::CPANModules::PickingRandomItemsFromList (from Perl distribution Acme-CPANModules-PickingRandomItemsFromList), released on 2021-09-18.


If you are picking random lines from a file, there's a separate CPANModules list for it: Acme::CPANModules::PickingRandomLinesFromFile.

If you want to allow duplicates, you can repeatedly pick random elements from an array using the $ary[rand @ary] idiom.

If you do not want to allow duplicates:

List::Util (from version 1.54, 2020-02-02) provides sample(). If you use an older version, you can use shuffle() then get as many number of samples as you need using slice (@shuffled[0..$num_wanted-1]) or head().

List::MoreUtils provides samples().

Keywords: sample, sampling.



What is an Acme::CPANModules::* module?

An Acme::CPANModules::* module, like this module, contains just a list of module names that share a common characteristics. It is a way to categorize modules and document CPAN. See Acme::CPANModules for more details.

What are ways to use this Acme::CPANModules module?

Aside from reading this Acme::CPANModules module's POD documentation, you can install all the listed modules (entries) using cpanm-cpanmodules script (from App::cpanm::cpanmodules distribution):

 % cpanm-cpanmodules -n PickingRandomItemsFromList

Alternatively you can use the cpanmodules CLI (from App::cpanmodules distribution):

    % cpanmodules ls-entries PickingRandomItemsFromList | cpanm -n

or Acme::CM::Get:

    % perl -MAcme::CM::Get=PickingRandomItemsFromList -E'say $_->{module} for @{ $LIST->{entries} }' | cpanm -n

or directly:

    % perl -MAcme::CPANModules::PickingRandomItemsFromList -E'say $_->{module} for @{ $Acme::CPANModules::PickingRandomItemsFromList::LIST->{entries} }' | cpanm -n

This Acme::CPANModules module also helps lcpan produce a more meaningful result for lcpan related-mods command when it comes to finding related modules for the modules listed in this Acme::CPANModules module. See App::lcpan::Cmd::related_mods for more details on how "related modules" are found.


Please visit the project's homepage at


Source repository is at


Bencher::Scenario::SamplingFromList for the benchmark, which we will probably include in the future.

Acme::CPANModules - about the Acme::CPANModules namespace

cpanmodules - CLI tool to let you browse/view the lists


perlancar <>


To contribute, you can send patches by email/via RT, or send pull requests on GitHub.

Most of the time, you don't need to build the distribution yourself. You can simply modify the code, then test via:

 % prove -l

If you want to build the distribution (e.g. to try to install it locally on your system), you can install Dist::Zilla, Dist::Zilla::PluginBundle::Author::PERLANCAR, and sometimes one or two other Dist::Zilla plugin and/or Pod::Weaver::Plugin. Any additional steps required beyond that are considered a bug and can be reported to me.


This software is copyright (c) 2021 by perlancar <>.

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


Please report any bugs or feature requests on the bugtracker website

When submitting a bug or request, please include a test-file or a patch to an existing test-file that illustrates the bug or desired feature.