Daniel Carrera

Back in Germany

Daniel — Sat, 15 Aug 2009 13:17:39 +0000

After more than a month out of the country, I am now back in Germany. Where have I been the last month and a half? Well, I got married at the end of June and my wife and I went …

Embedding Parrot in Perl 6

Daniel — Sat, 20 Jun 2009 00:50:08 +0000

One of the interesting things about Rakudo is that you can embed Parrot assembly code (PIR to be exact) into Perl 6 code. With this you can optimize critical parts of the code and you can expose additional Parrot features …

Perl 6 and the Josephus problem

Daniel — Fri, 12 Jun 2009 15:35:31 +0000

The Josephus problem in Perl 6, Python and Ruby In today’s post, I would like to compare the OOP syntax of Perl 6, Python and Ruby. To this effect, I decided to show you an implementation of the Josephus problem …

RPN calculator in Perl 6

Daniel — Sat, 06 Jun 2009 11:04:02 +0000

Here is something fun. Let’s make a full RPN calculator in Perl 6. In the process we’ll learn a lot about Perl 6′s cool grammar features. Regexes on steroids Perl 6 extends Perl 5′s regular expressions to make a full …

Perl 6 First Steps

Daniel — Fri, 05 Jun 2009 13:05:55 +0000

I have been working more with Perl 6 / Rakudo. I have contributed a few bug reports, and I have now ported six of the Debian shootout benchmarks to Perl 6. I’m adding all the benchmarks to the perl6-examples git …

Brainfuck interpreter in Perl 6

Daniel — Sat, 30 May 2009 21:23:54 +0000

I wrote a Brainfuck interpreter in Perl 6 (largely inspired by Acme::Brainfuck). Here it is in its entirety: # Read the program. my $program = $*IN.slurp; # Compile to Perl 6. $program .= subst(/\$/, 'P; };', :g); $program .= subst(/(\++)/, …

Perl 6

Daniel — Wed, 27 May 2009 10:47:05 +0000

This week I’ve been experimenting a little with Perl 6. It began as a quick question on IRC and somehow I ended up writing sample scripts in Perl 6. This week I ported the regex-dna benchmark to Perl 6, and …

Why are plants green?

Daniel — Mon, 27 Apr 2009 18:31:26 +0000

Have you ever wonder why plants are green? And no, the answer I’m looking for is not “stuff is green because it reflects green light and absorbs red and blue”. What I mean is, why in the world would plants …

Ammonia based life

Daniel — Mon, 20 Apr 2009 15:05:42 +0000

A very interesting page on ammonia-based life. I didn’t realize that ammonia was such a good alternative to water as a basis for biology.

Personal Finance Software

Daniel — Thu, 05 Feb 2009 16:55:03 +0000

Updated: 3 Nov 2009. This is a list of eight “Personal Finance” (accounting-type) programs that are entirely free, open source and mostly cross-platform. KMyMoney is not cross-platform but in the future it will be. The programs are listed in approximate …