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Welcome to my blog, which was once a mailing list of the same name and is still generated by mail. Please reply via the "comment" links.

Always interested in offers/projects/new ideas. Eclectic experience in fields like: numerical computing; Python web; Java enterprise; functional languages; GPGPU; SQL databases; etc. Based in Santiago, Chile; telecommute worldwide. CV; email.

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Lepl parser for Python.

Colorless Green.

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SVG experiment.

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Data access via web services.

Cache rewrite.

Extending OpenSSH.

C-ORM: docs, API.

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© 2006-2015 Andrew Cooke (site) / post authors (content).

Learn Prolog Now

From: "andrew cooke" <andrew@...>

Date: Wed, 22 Oct 2008 20:42:03 -0300 (CLST)

Free book -

Chapter 7 looks interesting - an explanation of definite clause grammars. 
I know the basic ideas behind Prolog (ie unification, Horn clauses), but
not the parsing stuff.

From this article, which went way too fast for me -


Declarative Mini-Languages in Python

From: "andrew cooke" <andrew@...>

Date: Wed, 22 Oct 2008 21:40:38 -0300 (CLST)

This looks like a useful article -

In fact, there seems to be a whole pile of them -


about the article

From: "andrew cooke" <andrew@...>

Date: Mon, 17 Nov 2008 21:46:24 -0300 (CLST)

Just seen this (people reply so infrequently I forget to check the spam
filter).  Andrew

---------------------------- Original Message ----------------------------
From:    "Stefan Petrea" <stefan.petrea@...>
Date:    Tue, October 28, 2008 9:42 am


What part of the article did you think went too fast or was unclearly
explained ?
Your reply will help me improve it in the time to come.

Thank you

Fast Is Not Necesarily Bad

From: "andrew cooke" <andrew@...>

Date: Mon, 17 Nov 2008 21:58:07 -0300 (CLST)

Hi - sorry for not replying earlier (I filter email submissions to my site
because of spam, and only get maybe 2 or 3 genuine comments a year, so
forget to check the filter...).

I think the problem was mainly that, although I know the basics behind
Prolog, I have never read through a "real" Prolog program.  So it wasn't
difference lists, or the DCG stuff, but all the noisy details about how
you structure something more complex than the very simple examples I read

But I do not think this is a bad thing!  The web is full of very very
simple examples that show how to append a value to a list, or generate
permutations.  You should not try to reproduce that.  I learnt more from
your page when I read it (and more again now, skimming it through to
remind myself what it was all about) than I ever have done from simpler,
"too easy" pages.

I'm sorry my criticism ("way too fast") was inaccurate and unhelpful, and
I think your page is excellent as it is.  It would have been better for me
to say something like "too much detail for me to understand everything in
a few minutes of scanning"... (because of how this site is generated it's
not trivial for me to modify anything already posted, or I would do so).


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