NAME
Array::Sample::SimpleRandom - Sample elements randomly (with or without
replacement)
VERSION
This document describes version 0.003 of Array::Sample::SimpleRandom
(from Perl distribution Array-Sample-SimpleRandom), released on
2022-05-21.
SYNOPSIS
use Array::Sample:: qw(sample_simple_random_with_replacement sample_simple_random_no_replacement);
sample_simple_random_with_replacement([0,1], 1); => (0)
sample_simple_random_with_replacement([0,1], 3); => (0,1,0)
sample_simple_random_no_replacement([0,1,2,3,4], 1); => (3)
sample_simple_random_no_replacement([0,1,2,3,4], 3); => (2,1,4)
sample_simple_random_no_replacement([0,1,2,3,4], 7); => (3,4,2,1,0)
DESCRIPTION
FUNCTIONS
All functions are not exported by default, but exportable.
sample_simple_random_with_replacement
Syntax: sample_simple_random_with_replacement(\@ary, $n [ , \%opts ]) =>
list
Options:
* pos => bool
If set to true, will return positions instead of the elements.
The function takes an array reference ("\@ary") and number of samples to
take ($n). It will take samples at random position. An element can be
picked more than once.
sample_simple_random_no_replacement
Syntax: sample_simple_random_no_replacement(\@ary, $n [ , \%opts ]) =>
list
Options:
* pos => bool
If set to true, will return positions instead of the elements.
The function takes an array reference ("\@ary") and number of samples to
take ($n). It will take samples at random position. An element can only
be epicked once. If $n is larger than the number of elements in the
array, only that many elements will be taken.
The implementation constructs a (shallow) copy of the array then remove
elements randomly from the copy-array until the number of requested
samples are met. There is another implementation that avoids creating a
copy but scans the array once; see Array::Sample::SimpleRandom::Scan.
HOMEPAGE
Please visit the project's homepage at
<https://metacpan.org/release/Array-Sample-SimpleRandom>.
SOURCE
Source repository is at
<https://github.com/perlancar/perl-Array-Sample-SimpleRandom>.
SEE ALSO
Other sampling methods: Array::Sample::SysRand,
Array::Sample::Partition, Array::Sample::WeightedRandom.
Array::Sample::SimpleRandom::Scan
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) 2022 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=Array-Sample-SimpleRa
ndom>
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.