/ 
RoleBundle-TinyCommons-Collection-0.009
River stage one • 1 direct dependent • 1 total dependent
/ Role::TinyCommons::Collection::PickItems::Iterator

NAME

Role::TinyCommons::Collection::PickItems::Iterator - Provide pick_items() that picks by iterating all items once

VERSION

This document describes version 0.009 of Role::TinyCommons::Collection::PickItems::Iterator (from Perl distribution RoleBundle-TinyCommons-Collection), released on 2021-10-07.

DESCRIPTION

This role provides pick_items() that picks random items by doing a one-time full scan (or iteration) of a resettable iterator. The algorithm is a modified form of one that was presented in Learning Perl book.

Note that for a huge collection, this might not be a good idea. If your collection supports a fast get_item_at_pos and an efficient get_item_count, you can use Role::TinyCommons::FindItems::RandomPos. If your collection's items are lines from a filehandle, you can use Role::TinyCommons::FindItems::RandomSeekLines.

ROLES MIXED IN

Role::TinyCommons::Collection::PickItems

REQUIRED METHODS

reset_iterator

get_next_item

has_next_item

HOMEPAGE

Please visit the project's homepage at https://metacpan.org/release/RoleBundle-TinyCommons-Collection.

SOURCE

Source repository is at https://github.com/perlancar/perl-RoleBundle-TinyCommons-Collection.

SEE ALSO

Role::TinyCommons::Collection::PickItems and other Role::TinyCommons::Collection::PickItems::*.

AUTHOR

perlancar <perlancar@cpan.org>

CONTRIBUTING

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.

COPYRIGHT AND LICENSE

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

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

BUGS

Please report any bugs or feature requests on the bugtracker website https://rt.cpan.org/Public/Dist/Display.html?Name=RoleBundle-TinyCommons-Collection

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.