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 . SOURCE Source repository is at . BUGS Please report any bugs or feature requests on the bugtracker website 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 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.