NAME
    Regexp::Pattern::Palindrome - Regexp patterns related to palindrome

VERSION
    This document describes version 0.002 of Regexp::Pattern::Palindrome
    (from Perl distribution Regexp-Pattern-Palindrome), released on
    2020-02-11.

SYNOPSIS
     use Regexp::Pattern; # exports re()
     my $re = re("Palindrome::gen_palindrome_alphanum");

DESCRIPTION
    Regexp::Pattern is a convention for organizing reusable regex patterns.

PATTERNS
    *   gen_palindrome_alphanum

        Generate regex to match palindrome alphanumeric word of certain
        minimum length.

        This is a dynamic pattern which will be generated on-demand.

        The following arguments are available to customize the generated
        pattern:

        *   min_len

        Examples:

         "a" =~ re("Palindrome::gen_palindrome_alphanum", {min_len=>1});  # matches

         "a" =~ re("Palindrome::gen_palindrome_alphanum", {min_len=>3});  # doesn't match

         "aaa" =~ re("Palindrome::gen_palindrome_alphanum", {min_len=>3});  # matches

         "aba" =~ re("Palindrome::gen_palindrome_alphanum", {min_len=>3});  # matches

         "abba" =~ re("Palindrome::gen_palindrome_alphanum", {min_len=>3});  # matches

         "abcba" =~ re("Palindrome::gen_palindrome_alphanum", {min_len=>3});  # matches

         "abc" =~ re("Palindrome::gen_palindrome_alphanum", {min_len=>3});  # doesn't match

         "a" =~ re("Palindrome::gen_palindrome_alphanum", {min_len=>5});  # doesn't match

         "abcba" =~ re("Palindrome::gen_palindrome_alphanum", {min_len=>5});  # matches

         "abccba" =~ re("Palindrome::gen_palindrome_alphanum", {min_len=>5});  # matches

         "abcde" =~ re("Palindrome::gen_palindrome_alphanum", {min_len=>5});  # doesn't match

         "a" =~ re("Palindrome::gen_palindrome_alphanum", {min_len=>7});  # doesn't match

         "abcdcba" =~ re("Palindrome::gen_palindrome_alphanum", {min_len=>7});  # matches

         "abcddcba" =~ re("Palindrome::gen_palindrome_alphanum", {min_len=>7});  # matches

         "abcdefg" =~ re("Palindrome::gen_palindrome_alphanum", {min_len=>7});  # doesn't match

         "a" =~ re("Palindrome::gen_palindrome_alphanum", {min_len=>9});  # doesn't match

         "abcdedcba" =~ re("Palindrome::gen_palindrome_alphanum", {min_len=>9});  # matches

         "abcdeedcba" =~ re("Palindrome::gen_palindrome_alphanum", {min_len=>9});  # matches

         "abcdefghi" =~ re("Palindrome::gen_palindrome_alphanum", {min_len=>9});  # doesn't match

         "a" =~ re("Palindrome::gen_palindrome_alphanum", {min_len=>11});  # doesn't match

         "abcdefedcba" =~ re("Palindrome::gen_palindrome_alphanum", {min_len=>11});  # matches

         "abcdeffedcba" =~ re("Palindrome::gen_palindrome_alphanum", {min_len=>11});  # matches

         "abcdefghijk" =~ re("Palindrome::gen_palindrome_alphanum", {min_len=>11});  # doesn't match

         "a" =~ re("Palindrome::gen_palindrome_alphanum", {min_len=>13});  # doesn't match

         "abcdefgfedcba" =~ re("Palindrome::gen_palindrome_alphanum", {min_len=>13});  # matches

         "abcdefggfedcba" =~ re("Palindrome::gen_palindrome_alphanum", {min_len=>13});  # matches

         "abcdefghijklm" =~ re("Palindrome::gen_palindrome_alphanum", {min_len=>13});  # doesn't match

         "a" =~ re("Palindrome::gen_palindrome_alphanum", {min_len=>15});  # doesn't match

         "abcdefghgfedcba" =~ re("Palindrome::gen_palindrome_alphanum", {min_len=>15});  # matches

         "abcdefghhgfedcba" =~ re("Palindrome::gen_palindrome_alphanum", {min_len=>15});  # matches

         "abcdefghijklmno" =~ re("Palindrome::gen_palindrome_alphanum", {min_len=>15});  # doesn't match

    *   palindrome_alphanum

        Palindrome alphanumeric word (single alphanum included).

        Examples:

         "foo" =~ re("Palindrome::palindrome_alphanum");  # doesn't match

         "Aa" =~ re("Palindrome::palindrome_alphanum");  # doesn't match

         "-" =~ re("Palindrome::palindrome_alphanum");  # doesn't match

         "a-a" =~ re("Palindrome::palindrome_alphanum");  # doesn't match

         "a" =~ re("Palindrome::palindrome_alphanum");  # matches

         "aa" =~ re("Palindrome::palindrome_alphanum");  # matches

         "zzz" =~ re("Palindrome::palindrome_alphanum");  # matches

         "kodok" =~ re("Palindrome::palindrome_alphanum");  # matches

        Feb 2nd, 2020 in YYYYMMDD format.

         20200202 =~ re("Palindrome::palindrome_alphanum");  # matches

HOMEPAGE
    Please visit the project's homepage at
    <https://metacpan.org/release/Regexp-Pattern-Palindrome>.

SOURCE
    Source repository is at
    <https://github.com/perlancar/perl-Regexp-Pattern-Palindrome>.

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

    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
    Regexp::Pattern

    Some utilities related to Regexp::Pattern: App::RegexpPatternUtils,
    rpgrep from App::rpgrep.

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.

