Role::TinyCommons::Iterator::Resettable - A resettable iterator
This document describes version 0.004 of Role::TinyCommons::Iterator::Resettable (from Perl distribution RoleBundle-TinyCommons-Iterator), released on 2021-10-07.
A resettable iterator is just like a basic iterator except that it has "reset_iterator" to reset the iterator position back to the beginning.
Role::TinyCommons::Iterator::Basic
Reset the iterator, which means the subsequent get_next_item() should get the first item again, and the subsequent get_iterator_pos() right before any getting of more items should return 0.
get_next_item()
get_iterator_pos()
Usage:
my @items = $obj->get_all_items;
Return a list containing all the items. Equivalent to:
do { $obj->reset_iterator; my @items; while ($obj->has_next_item) { push @items, $obj->get_next_item; } @items; }
my $count = $obj->get_item_count;
Return the number of items. Equivalent to:
do { $obj->reset_iterator; my $count = 0; while ($obj->has_next_item) { $obj->get_next_item; $count++; } $count; }
$obj->each_item($coderef);
Call $coderef for each item. If $coderef returns false, will immediately return false and skip the rest of the items. Otherwise, will return true. Equivalent to:
$coderef
$obj->reset_iterator; my $pos = 0; while ($obj->has_next_item) { my $item = $obj->get_next_item; my $res = $coderef->($item, $obj, $pos); return 0 unless $res; $pos++; } return 1;
Please visit the project's homepage at https://metacpan.org/release/RoleBundle-TinyCommons-Iterator.
Source repository is at https://github.com/perlancar/perl-RoleBundle-TinyCommons-Iterator.
perlancar <perlancar@cpan.org>
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 <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.
Please report any bugs or feature requests on the bugtracker website https://rt.cpan.org/Public/Dist/Display.html?Name=RoleBundle-TinyCommons-Iterator
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.
To install RoleBundle::TinyCommons::Iterator, copy and paste the appropriate command in to your terminal.
cpanm
cpanm RoleBundle::TinyCommons::Iterator
CPAN shell
perl -MCPAN -e shell install RoleBundle::TinyCommons::Iterator
For more information on module installation, please visit the detailed CPAN module installation guide.