Aside from the Perl project itself what were the Perl projects published that had a positive impact in the world--whether in the tech industry or even for hackers and hobbyists. I ask to better understand what Perl is and is not useful for.

submitted by /u/fosres
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So I came across a book named "Higher-Order Perl" which teaches how to apply functional coding concepts to complete tasks in Perl. Have you used the book's techniques in your production-deployed projects? If so how did the book's advice help?

submitted by /u/fosres
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Hi everyone. I am still researching how to benefit from Perl as a security engineer. I heard you can use Perl to test for security exploits in codebases? What have you used Perl for in he past? What did you find of most helpful for in your coding journey?

submitted by /u/fosres
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[aside] This is not a cross-post. Few days ago I asked the same thing on Stack Overflow, and there were several answers, but none of them works really perfect.)

I have a folder with the following files there:

1.mp3 1.mp3.mp4 1.mp4.mp3 1.txt 2.mp3 2.mp3.mp4 2.mp4.mp3 2.txt foo.mp3 foo.mp3.mp4 foo.mp4.mp3 foo.txt foo1.mp3 foo1.mp3.mp4 foo1.mp4.mp3 foo1.txt foo2.mp3 foo2.mp3.mp4 foo2.mp4.mp3 foo2.txt

Filenames like foo.mp4.mp3 mean that originally the file was MP4 and later converted to MP3.

I need to batch rename MP3 files there, so that their numbers will be padded with leading zeros, that is, 1.mp3 should be renamed 0001.mp3, 1.mp4.mp3 to 0001.mp4.mp3, foo1.mp3 to foo001.mp3, and so on.

Here are several attempts by other people:

• rename -n 's/(\d+)/sprintf "%03d", $1/e' *.mp3
• rename -n 's/(\d+)\.mp3/sprintf "%03d.mp3", $1/e' *.mp3
• rename -n 's/(\d+)(\.mp3)/sprintf("%03d", $1) . $2/e or s/(\d+)(\.mp3)/sprintf "%03d%s", $1, $2/e' *.mp3
• rename -n 's/(\d+)(\.mp3)/sprintf "%03d%s", $1, $2/e' *.mp3
• rename -n 's/(\d+)(?=\.mp3)/sprintf "%03d", $1/e' *.mp3
• and my own, doesn't work either: rename -n 's/(\d)(\.[^.]+)/sprintf "%03d%s", $1, $2/e' *

Maybe there is a Perl wizard here who could help me?

submitted by /u/Impressive-West-5839
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Although this StackOverflow question about "islands and gaps" is titularly about Perl, the SQL answers are very nice. Apparently this is a FAQ for SQL.

However, this has bugged me for years on the CPAN side, but never enough to make me really do anthing about.

I thought there was a Perl module that did this, and it was in the context of a usenet reader that would take a list of article IDs, such as 1, 2, 3, 4, 5, 7, 10, 11, 15 and return something like 1-5,7,10-11,15 as a more space-efficient store of all the articles you had read.

Every time I've looked I've stopped after 15 minutes because I get distracted and I've never really needed this except to answer someone else's question. I'm not asking how to solve this because there are plenty of algorithm tutorials out there. Surely this is on CPAN somewhere.

There are plenty of options to go the other way and to ask if a number is in one of the ranges.

• Usenet was pre-web reddit, and comp.lang.perl and comp.lang.perl.misc are where I got my start in the Perl socials before there was "social".

submitted by /u/briandfoy
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I am new to this subreddit, but not new to Perl, though I've been flirting with Python for a little over two years so I'm a little out of the loop.

If I wanted to create a RESTful API using Catalyst and have my Swagger docs generated automatically, are there any toolchain recommendations that anyone can make?

Thanks.

submitted by /u/Biggity_Biggity_Bong
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This might be Perl/docker-perl#161 but if I filed this in the wrong place, let me know. Keeping these things current is the sort of thing I'd pay for.

Pulling perl images locally give the same warnings for old perl versions, although my local docker will still run them:

$ docker pull perl:5.14 5.14: Pulling from library/perl Image docker.io/library/perl:5.14 uses outdated schema1 manifest format. Please upgrade to a schema2 image for better future compatibility. More information at https://docs.docker.com/registry/spec/deprecated-schema-v1/ 

/usr/bin/docker pull perl:5.14 5.14: Pulling from library/perl [DEPRECATION NOTICE] Docker Image Format v1 and Docker Image manifest version 2, schema 1 support is disabled by default and will be removed in an upcoming release. Suggest the author of docker.io/library/perl:5.14 to upgrade the image to the OCI Format or Docker Image manifest v2, schema 2. More information at https://docs.docker.com/go/deprecated-image-specs/ Warning: Docker pull failed with exit code 1, back off 5.148 seconds before retry. /usr/bin/docker pull perl:5.14 5.14: Pulling from library/perl [DEPRECATION NOTICE] Docker Image Format v1 and Docker Image manifest version 2, schema 1 support is disabled by default and will be removed in an upcoming release. Suggest the author of docker.io/library/perl:5.14 to upgrade the image to the OCI Format or Docker Image manifest v2, schema 2. More information at https://docs.docker.com/go/deprecated-image-specs/ Warning: Docker pull failed with exit code 1, back off 4.06 seconds before retry. /usr/bin/docker pull perl:5.14 5.14: Pulling from library/perl [DEPRECATION NOTICE] Docker Image Format v1 and Docker Image manifest version 2, schema 1 support is disabled by default and will be removed in an upcoming release. Suggest the author of docker.io/library/perl:5.14 to upgrade the image to the OCI Format or Docker Image manifest v2, schema 2. More information at https://docs.docker.com/go/deprecated-image-specs/ Error: Docker pull failed with exit code 1 

 matrix: os: - ubuntu-22.04 perl-version: - '5.8' - '5.10' - '5.12' - '5.14' - '5.16' - '5.18' - '5.20' - '5.22' - '5.24' - '5.26' - '5.28' - '5.30' - '5.32' - '5.34' - '5.36' - 'latest' container: image: perl:${{ matrix.perl-version }} 

Mo utilities for email.

Changes for 0.02 - 2024-04-26T23:02:53+02:00

• Add tests for error parameters.
• Rewrite the tests so that the functional tests are first and then the errors.