blogs.perl.org

This module offers a way to check your web pages for correct gzip compression. It not only checks that your web page is compressed properly when required, but also checks that the web page is not accidentally compressed when not required, and that the compression actually does something useful in terms of reducing the page size. I wrote it because I couldn't find anything to do that on CPAN.

It's compatible with Test::More if you want to run the compression checks automatically.

It is fix a bracket and AND day in the Moose-pen

Sometimes we are required to check incoming IDs not only for format, but also for existence in DB.

But different IDs we should check through different models.

This pull request tries to add this functionality. If it will be appiled you can do next:

$v->required( 'invoice_id', [ data_exists => 'Invoice' ] );
$v->required( 'order_id', [data_exists => 'Order' ] );

And the fileter:

Hey everyone,

Following is the p5p (Perl 5 Porters) mailing list summary for the past week.

Enjoy!

We have uploaded videos from this year's workshop to YouTube: Swiss Perl Workshop on YouTube.

Note that we didn't record all talks as some were given at TPC and will be of much better quality from them. Also we didn't record the workshops, nor the lightning talks. Still, we have some exclusive content, so have a look.

It condiment day again here in the Moose-Pen

Time to do some more catch-up coding as my most recent round of changes to fix all my 'element->view' woes I ended up removing any checks for 'parentheses' I had in place. To recap on the original idea of the parentheses check was to make sure that there was at least one closing bracket for each opening bracket in the 'conditions' being send down to the DAD.

As it stands now I am using the '_parentheses_check' sub to check all the attributes that that may contains not just an 'element' but any class that can use a 'predicate' so 'Elelemets','Functions','Expressions' and 'Conditions' quite an expended set.

Unfortunately I can not really test to see that the positioning of the brackets are syntactically correct as this;

  ORDER BY (left(test,12)+12)*12

Rakudo and other repositories in perl6 GitHub org have plenty of open bug tickets. We decided it would be neat to give them an extra push with concentrated effort, which is why we'd like to organize a monthly, 1-day virtual event where we pick a repository and everyone works on open tickets in that repository.

The day will be first Saturday of every month. This month we'll be hacking on the Issues of github.com/perl6/doc repository.

Whether you're a seasoned Rakudo developer or just starting out, join us this Saturday in #perl6 on irc.freenode.net chat channel (no specific time) and contribute! If you'd like to simply hang out, you're welcome too, we love company!

See also: our SQUASHathon Wiki or talk to a human about this.

The latest release of Test::podimage, version 0.05, shows a few interesting experimental ways to include images in CPAN modules.

It seems there is a way to show image files from the distribution on metacpan by using a leading slash, which I'd never heard of until now. There's also a new "=for image" tag. Oddly enough, although this was proposed five days ago, the CPAN grep search site tells us that this tag actually appears in some CPAN modules such as this one from 2010, although the above don't actually display on metacpan, perhaps because there is no leading slash in the image name.

A data URL can also be used.

Most of the image formats don't work on search.cpan.org.

Problems with concurrency, a post from the hard reality.

This worries me a bit I must admit; a few years ago, before the official release of P6, I tried my hand at concurrent programming in rakudo and it was so broken that i simply shelved P6 for over a year, it was simply not ready for a lambda dev like me. I would have loved to be in the trenches but I did not have the time to fight with core dumps.

As the speed of P6 is not stellar, I believe many of us, lambdas, will try to run things in parallel, it's also fun, to make them more attractive. The concurrency mechanism in P6 look good on paper, good enough so I can find myself dreaming of throwing in a few keywords in places I think concurrency would make a difference.

There is a nice silver lining to this one, It took a very short time before a lead developer answered me. I believe his answers may be interesting to read.

A description of the problems I encountered is here: gist

Another quick fix postette today in the Moose-Pen

ok 46 - Second Gather element does not inherit view
not ok 47 - Third Gather element inherits view

Can't call method "predicates" on an undefined value at 57_dad_elements.t line 486.
# Looks like your test exited with 255 just after 49.

We recently did an interview with Daisuke Maki on the Perl community in Japan.

This is what came out of it - http://blog.builtinperl.com/post/perl-in-japan.

Have a look/read.

Hey everyone,

Following is the p5p (Perl 5 Porters) mailing list summary for the past week.

Enjoy!

I’ve got this example “awk” script:

$ cat x.awk 
BEGIN { print "Month Crates"
    print "----- ------" }
    { print $1, " ", $2 }

we can convert AWK to Perl with “a2p”:

$ a2p x.awk > x.pl

now create a test input file:

$ cat > x.txt
a b
d e
1 2

and try it out in Perl5-Java:

$ java -jar perlito5.jar x.pl x.txt 
Month Crates
----- ------
a     b
d     e
1     2

yay!

Its another quick test postette today in the Moose-Pne

So things are moving along now I just just going to finish off '57_dad_elements.t so it will be a short one today. Nothing much to Add I just have to add in dynamic link, gather, and sort.

So I'm gearing up to write a "Howto Raspberry Pi with Perl" multi-chapter tutorial, and as I finalize a few last things, I thought I'd put together how all of the software is laid out and is continuously tested.

The RPi::WiringPi distribution is essentially a class that provides access to external sub distributions, and provides several benefits such as maintaining a registry of in-use GPIO pins, and ensuring your Pi is cleaned up back to default on exit, or if an error or signal is caught. The sub modules do none of those things.

I use the automation and dispatching capabilities of my Test::BrewBuild software to handle the test management. This software runs your unit tests on any/all Perlbrew and/or Berrybrew installed instances, with the ability to dispatch your test requests over the network to remote machines. I'm not getting into those details, just know I use the bbtester binary to listen for test requests, and the bbdispatch binary to send them, both on the same Raspberry Pi hardware.

At TPC in Amsterdam I gave 2 lightning talks under the title perldoc -O. It was a questionary for the attendance which should give me some orientation which feature to prioritize or how to modify them best. I also spoke and mailed with all people I deemed relevant and want now to lay out the feature set I want to achieve with the rewrite.

SPVM project is improved day by day. SPVM is the project which provide static type data structure to Perl, and improve the performance of numeric and array operation.

I start to write SPVM specification. Most of all are Perl syntax.

Latest change is the following.

Its back to view day here in the Moose-Pen

Today I am going to carry on with getting full coverage for test case '57_dad_elements.t' and fixing the bug I found in yesterays post.

I searched on CPAN but was unable to find a way to split a .pm into a .pod and a .pm, so I made this script:

https://www.lemoda.net/perl/split-pod-from-pm/index.html

It's proved quite handy so far. Recently I took over maintenance of an old module called Net::IPv6Addr as part of the CPAN day. Today I upgraded the documentation a little so that the synopsis example is machine readable:

https://metacpan.org/source/BKB/Net-IPv6Addr-0.7/examples/synopsis.pl

https://metacpan.org/pod/Net::IPv6Addr#SYNOPSIS

Since most people probably don't read the documentation beyond the synopsis, I think it's important to make sure that the code example in the synopsis actually works. There are quite a few modules on CPAN where the synopsis code doesn't work. In the case of Net::IPv6Addr, I even have a test that the synopsis example works:

https://github.com/benkasminbullock/net-ipv6addr/blob/master/t/synopsis.t
https://metacpan.org/source/BKB/Net-IPv6Addr-0.7/t/synopsis.t

Finally the day arrived, I have been waiting for, since the reminder blog by Neil Bowers. It is like double celebration for me, as we celebrated 70th year of independence, yesterday i.e. 15th Aug.

I was working on couple of ideas to make it special CPAN day. One of them was to create map for Kolkatta Metro. Since it is special occasion for all Indians, I thought why not release something related to India. Kolkatta Metro is the first metro ever started in India.

So Map::Tube::Kolkatta finally made it to CPAN with love. This is not the only thing I have planned for today. I am going to submit at least one pull request as well. If it gets merged same day then it is going to be icing on the cake.