NAME
Acme::CPANModules::PickingRandomLinesFromFile - List of modules to pick
random lines from a file
VERSION
This document describes version 0.004 of
Acme::CPANModules::PickingRandomLinesFromFile (from Perl distribution
Acme-CPANModules-PickingRandomLinesFromFile), released on 2023-06-20.
ACME::CPANMODULES ENTRIES
File::Random
Author: BIGJ <https://metacpan.org/author/BIGJ>
The "random_line()" function from this module picks one or more
random lines from a specified file. The whole content of the file
does not need to be slurped into memory, but the routine requires a
single-pass of reading all lines from the file. The algorithm is as
described in perlfaq (See: "perldoc -q "random line"").
If you pick more than one lines, then there might be duplicates.
File::RandomLine
Recommended for large files.
Author: DAGOLDEN <https://metacpan.org/author/DAGOLDEN>
This module gives you a choice of two algorithms. The first is
similar to File::Random (the scan method), giving each line of the
file equal weight. The second algorithm is more interesting: it
works by random seeking the file, discarding the line fragment
(a.k.a. searching forward for the next newline character), reading
the next line, then repeating the process until the desired number
of lines is reached. This means one doesn't have to read the whole
file and the picking process is much faster than the scan method. It
might be preferred for very large files.
Note that due to the nature of the algorithm, lines are weighted by
the number of characters. In other words, lines that have long lines
immediately preceding them will have a greater probability of being
picked. Depending on your use case or the line length variation of
your file, this algorithm might or might not be acceptable to you.
File::Random::Pick
Author: PERLANCAR <https://metacpan.org/author/PERLANCAR>
This module is an alternative to File::Random. It offers a
"random_line()" routine that avoids duplication.
App::PickRandomLines
Author: PERLANCAR <https://metacpan.org/author/PERLANCAR>
A CLI that allows you to use File::Random::Pick or File::RandomLine
on the command-line.
FAQ
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 PickingRandomLinesFromFile
Alternatively you can use the cpanmodules CLI (from App::cpanmodules
distribution):
% cpanmodules ls-entries PickingRandomLinesFromFile | cpanm -n
or Acme::CM::Get:
% perl -MAcme::CM::Get=PickingRandomLinesFromFile -E'say $_->{module} for @{ $LIST->{entries} }' | cpanm -n
or directly:
% perl -MAcme::CPANModules::PickingRandomLinesFromFile -E'say $_->{module} for @{ $Acme::CPANModules::PickingRandomLinesFromFile::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.
HOMEPAGE
Please visit the project's homepage at
<https://metacpan.org/release/Acme-CPANModules-PickingRandomLinesFromFil
e>.
SOURCE
Source repository is at
<https://github.com/perlancar/perl-Acme-CPANModules-PickingRandomLinesFr
omFile>.
SEE ALSO
Acme::CPANModules::PickingRandomItemsFromList
Acme::CPANModules::ReadingFilesBackward
Acme::CPANModules - about the Acme::CPANModules namespace
cpanmodules - CLI tool to let you browse/view the lists
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,
Pod::Weaver::PluginBundle::Author::PERLANCAR, and sometimes one or two
other Dist::Zilla- and/or Pod::Weaver plugins. Any additional steps
required beyond that are considered a bug and can be reported to me.
COPYRIGHT AND LICENSE
This software is copyright (c) 2023, 2019 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=Acme-CPANModules-Pick
ingRandomLinesFromFile>
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.