my requirement is that I've a pattern like 0x67AEX, but i want to replace this by 0x67AE0 by one liner. the text file also has words like express, timex,etc.,

http://theperlfisher.blogspot.ro - Just published a new article on grammars in Perl 6 (And yes, the blog title is a play on a Georges Bizet opera.)

Hey everyone,

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

This is a recent update of an ancient article.

Would you like to earn some money while writing articles about Perl? I am looking for authors for the Perl Maven site. If you are interested, please get in touch with me via email (gabor at szabgab.com).

My last assignment in the CPAN Pull Request Challenge 2015 was Net::Stripe. I’d never heard of the module, so I skimmed its documentation to learn it provides an API to Stripe.com. From the method list, it seemed to be some kind of a payment service. It had no tester failures, though, and the issues on GitHub were either too complex or not specific enough to give me an idea on what to start working. I asked in the Challenge’s IRC channel and got the following advice from Joel Berger and Ether:

jberger	choroba: I haven’t looked at that module, but almost
	all service wrapper modules have woeful tests because
	they require the service
...	contributing some mock service tests might be nice
	and something you could do without an account (at least
	in concept)
ether	Test::LWP::UserAgent!!

Well not really.

Any of us pre-web people might remember a nifty new language called Java that made a splash on the world just as the web was beginning.

The time I first started with JavaBeans there where a set of I think about 75 encapsulated GUI objects in a 'jar' file, get it 'a jar of beans' or at least that is what the myth is*.

Anyway one was suppose to use these beans to assemble you GUI program, and this was to lead to all sorts of time saving as you could just re-use componetes for all sorts of projects. I think in my about 7 years programming with Java I never ever actually used a classic JavaBean from Sun.

Anyway within a short few years the Web saw the use of JavaBeans expand and their use in non UI based roles absolutely dwarf their original intention as a building block in classic UI programs.

Doing some really simple research on Neural Network, i came across that blog post: http://iamtrask.github.io/2015/07/12/basic-python-network/ . Reading that blog post is a good simple introduction to Neural Network, with Concrete example, implemented in Python.

After that, i thought, why not try that with Perl6, however, things were not that simple. Python has some pretty nice libraries for matrix calculation, like numpy, Perl6 on the other hand, does not yet have so many libraries.

Implementing a simple neural network will not be as simple as in Python. With the Neural Network sample from the first part of the previously quoted post, i started to work on a simple library to do some Matrices calculation, Math::Matrix.

For now, the Library only contains simple operations, like addition, subtraction, transposition, negative, determinant. The next step will be to start to work on LU decomposition, and further on.

First thing first, the Neural Network from the previous post would translate to:

Hopefully you've all heard about the amazingly successful CPAN Pull Request Challenge that was run throughout 2015 by Neil Bowers. If not you can read about it here or here. You may also have heard that 2016 is coming in a couple of days, and that Neil is starting up the 2016 Pull Request Challenge.

What you might not know, especially if you didn't take part in the 2015 challenge, is that Neil ran a survey recently to get feedback from the CPAN distribution authors and the participants about how it went. I was both at various points of the year, so I got both surveys :-)

Perl 6 is here and people in the Perl community seem to be excited, but I don’t understand why. Perl 6 is a bit sexier than Perl 5. It’s got quite a few whiz-bangs I’d like to use. However, I’m likely never going to use it, and I think the same is true for the other established businesses using Perl 5. Here’s why:

There is no real migration path from Perl 5 to Perl 6. If you have any significant code base in Perl 5 you’re going to keep working in Perl 5. 

If you decide to up and rewrite your entire system, are you going to choose Perl 6? As amazing as Perl 6 is, I don’t think so. I think you’re going to pick Javascript and node.js. The reason is simple, Javascript has a lot of the same flexibility as Perl, it’s faster than Perl, and there’s an almost immeasurable amount of work being put into Javascript libraries.

Once upon a Friday

Are you a smart web developer using Mojolicious, Dancer2, Kelp, Limper or just CGI ? Sure, yes you are! ;-) You have just finished yet another web application ready to get deployed and awaited with impatience by your customers. All your 't/' are fine, you for sure use Plack::Test or similar tools to tests your application not only in internal but external way. Everything is going to be fine, even though it's Friday today and is not probably good time to make a release, but you so anxious to see a results and get users input, so you are going to talk to John - devops guy and send him a git URL where your source code lives in so he could start the deploy procedure ...

... But, yes, there are some "hurdles" always. John kindly asking you to provides some monitoring capabilities for your freshly baked application, so he could make it sure it won't break on weekend silently without alarming anybody ...

Ah, yeah you talk about monitoring ... ?

Given the embarrassing talk that Netanel Rubin gave last year, in which he chose not to learn a language and then laugh at it for the mistakes he made, I’m surprised I have to respond to yet another of his talks. Surprisingly, CCC gave him another slot to present strawman arguments for cheap laughs again this year, and no doubt that’s what he did.

Hey everyone,

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

Perl is built with testing in mind from the start. All the tools someone would like to have to do testing are there. Almost every module on CPAN has a directory t , containing test files. Writing one’s own test files is not really hard, once familiar with the tools.

Testing a web application written with Dancer is also really convenient with Plack::Test and PSGI. The usual way would be to use a SQL Lite database as a test database, which can be created or teared down pretty easily.

However, a SQLite database can’t always do the trick. If the website/API is using for instance database schema or any other functionality that SQLite does not support. In that case, we need to find a way to test with a PostgreSQL server.

To illustrate that, let’s write a really small API with Dancer 2, that will manage a film collection. To keep it simple, we will just keep a list of films with their title. The database engine used being PostgreSQL:

I know this is probably the worst time of the year to blog about something different than Perl 6... but I had this article under construction since about one month, and some Christmas vacations helped to give it the final touches! I hope someone will enjoy... and I wish you all a happy new year!

Some ramblings over 6.c:

Dr Strangecode, or how to stop worrying and learn to love Perl 6!

So Perl 6 has been officially released.

By Christmas.

Just as I always promised (...for, ahem, so many years in a row ;-)

And now that we've arrived at this joyous and long-anticipated day, now that we officially have this extraordinary and beautiful language at our disposal, now that the project that has consumed half of my own professional life has finally reached its first great milestone ...what can I say?

I could perhaps reflect on the long, often lonely, sometimes painful, struggle to bring this language into existence. On the endless fear, uncertainly, and doubt from a sceptical world. But that is only history now, irrelevant, and largely obscured by the memory of the tireless support and patience and faith of so many loyal friends and supportive colleagues.

Check out the final Perl 6 Advent post of 2015.

Also check out Jonathan Worthington's thoughts on the 6.c release of Rakudo.

While going through my repositories, looking for things to work on during the holidays, I found a draft blog post for the CPAN.io pulse, that I initially planned to publish in June 2015: CPAN.io as a reference site

Greetings,

Several hours ago my unorthodox campaign came to an unsuccessful end. There has been a lot of feedback to my previous post, some of it so surprisingly off the mark that I still have not wrapped my head around it enough for a proper response. I plan to publish a much more in-depth analysis and "lessons learned", but I need to gain much more distance from the current hot mess of CPAN, to better express the crux of what went right and what went wrong (spoiler - while the campaign itself failed, I consider the chain of events an incredible, way-beyond-what-I-expected success)

Couple weeks before the "I give up" announcement I compiled and started working in parallel on the following list, in order to shape up a "final ribasushi-approved" DBIC release: