NAME
    Array::Pick::Scan - Pick random items from an array (or iterator),
    without duplicates

VERSION
    This document describes version 0.002 of Array::Pick::Scan (from Perl
    distribution Array-Pick-Scan), released on 2020-05-18.

SYNOPSIS
     use Array::Pick::Scan qw(random_item);

     my $item  = random_item(\@ary);
     my @items = random_line(\@ary, 3);

    or:

     my $item  = random_item(\&iterator);
     my @items = random_line(\&iterator, 3);

DESCRIPTION
    This module can return random items from an array (or iterator), without
    duplicates. It uses the same algorithm as File::Random::Pick, which in
    turn uses a slightly modified version of algorithm described in perlfaq
    ("perldoc -q "random line"")), but uses items from an array/iterator
    instead of lines from a file(handle).

    Performance-wise, this module is inferior to List::Util's "shuffle" or
    List::MoreUtils's "samples", but can be useful in cases where you have
    an iterator and do not want to put all the iterator's items into memory
    first.

FUNCTIONS
  random_item
    Usage:

     my @items = random_item(\@ary      [ , $num_samples ]);
     my @items = random_item(\&iterator [ , $num_samples ]);

    Number of samples defaults to 1.

HOMEPAGE
    Please visit the project's homepage at
    <https://metacpan.org/release/Array-Pick-Scan>.

SOURCE
    Source repository is at
    <https://github.com/perlancar/perl-Array-Pick-Scan>.

BUGS
    Please report any bugs or feature requests on the bugtracker website
    <https://rt.cpan.org/Public/Dist/Display.html?Name=Array-Pick-Scan>

    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.

SEE ALSO
    File::Random::Pick

    List::Util's "shuffle"

    List::MoreUtils's "samples"

AUTHOR
    perlancar <perlancar@cpan.org>

COPYRIGHT AND LICENSE
    This software is copyright (c) 2020 by 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.