Oliver's Site

RELAX NG with Content Classes

Oliver Horn — Tue, 21 Nov 2006 03:52:50 +0200

Version: 2006-11-20 Author: Oliver Horn This document describes ERNC, a syntactic extension of RELAX NG‘s Compact Syntax (RNC). ERNC introduces a lightweight syntax to make the definition of so-called “content classes” more convenient. Note that all extensions are just syntactic sugar. Every ERNC grammar can be transformed into a pure RELAX NG grammar; a simple processor is available for .

Python Code Object Utilities

Oliver Horn — Mon, 20 Nov 2006 01:34:47 +0200

This library provides a simple interface for changing the behavior of existing function/method objects. Download: pycodeutils.zip (License: MIT License, see file LICENSE in the distribution) Usage The behavior of a function/method object is changed by replacing its associated code object with a new one. The new code object delegates the execution to a given user-defined function (delegatee). The arguments as well as the original code are passed to the delegatee. So it is possible to either e…

Projects

Oliver Horn — Mon, 20 Nov 2006 01:14:42 +0200

PicotalkPython Code Object UtilitiesSyntax Tokenizer Extension for SaxonXSLTXSLT

Imprint

Oliver Horn — Sun, 19 Nov 2006 23:21:22 +0200

This website is a private site runned by Oliver Horn. Copyright If not otherwise noted, all text is licensed under the Creative Commons license Attribution-NonCommercial-ShareAlike 2.5. Software is not covered by this license statement. Colophon This site runs on a DokuWiki. The theme is based on the Sandy template.

Picotalk

Oliver Horn — Sun, 19 Nov 2006 23:01:16 +0200

Picotalk is a simple Smalltalk-like programming language and environment implemented in ECMAScript (JavaScript), mainly intended (but not limited) to teaching basic concepts of programming. Project page at berliOS:

Syntax Tokenizer Extension for Saxon

Oliver Horn — Sun, 19 Nov 2006 22:23:50 +0200

This extension for Saxon 6.5 provides an XSLT extension function for tokenizing programming code fragments. The extension function can be used to perform on-fly syntax highlighting during the transformation process. How does it works? The function returns an interim node-set containing a tokenized representation of the code. The stylesheet can then process this node-set, e.g. to generate formatted, syntax-highlighted output.

Picotalk - Document moved from downloads:picotalk

Oliver Horn — Sun, 19 Nov 2006 20:22:30 +0200

Oliver Horn

Oliver Horn — Wed, 15 Nov 2006 22:22:15 +0200

I’m a German software developer. I got a German Diplom degree in “Information Systems” from the University of Duisburg-Essen. Location Currently I live in Mülheim an der Ruhr, a small city in the Ruhr area of North Rhine-Westphalia. Sometimes Mülheim is also called “City on the river”.

The Arrogancy of Java Developers - created

Oliver Horn — Mon, 23 Oct 2006 16:22:04 +0200

Look at this discussion at The Server Side: Introspection is part of the java.beans package. The java.lang.Class class provides reflection. (Introspection is a higher-level concept that is largely built on reflection.) If a junior-level Java engineer did not know the difference between these two in an interview, it would weigh heavily against their hiring. For a supposed expert who writes books about technology, this ability …

Bogus Python Comparison

Oliver Horn — Mon, 16 Oct 2006 14:42:52 +0200

“ [O]bjects of different types always compare unequal, and are ordered consistently but arbitrarily.” And later on: “ [T]he choice whether one object is considered smaller or larger than another one is made arbitrarily but consistently within one execution of a program.”

Blog Archive

Oliver Horn — Fri, 13 Oct 2006 21:31:01 +0200

Oliver's Homepage

Oliver Horn — Thu, 12 Oct 2006 23:16:34 +0200

Why I like Portable Apps

Oliver Horn — Thu, 12 Oct 2006 22:33:43 +0200

Recently I gave some portable apps a try. A portable applications is a computer program that does not require an installation. Just unzip and execute. According the portableapps.com Why I like Portable Apps? First, That was one thing I always liked about Eclipse. “Download, unzip and run.”

Text Rendering on a HTML canvas

Oliver Horn — Thu, 12 Oct 2006 17:49:22 +0200

One often mentioned shortcoming of the HTML canvas element is drawing text, or to be more precise, the lack of this functionality. This lack seems to be intentional. To quote the current working draft (September 2006): “ [D]rawing text is not supported in this version of the API (there is no way to predict what metrics the fonts will have, which makes fonts very hard to use for painting)”

Rendering Text on a HTML Canvas

Oliver Horn — Thu, 12 Oct 2006 17:46:25 +0200

Essays

Oliver Horn — Thu, 12 Oct 2006 01:30:58 +0200

Here I put some essays which are to big to fit into a blog entry or which I will update from time to time. Be warned, for some of these texts the word “essay” may be overstated ;-).

Welcome

Oliver Horn — Thu, 12 Oct 2006 01:09:09 +0200

I’ve just relaunched this website... So, welcome to the new version of my homepage. The site runs now on DokuWiki which seems to be a pretty nice wiki.