useful dreams blog http://blog.usefuldreams.org randomness from a vegan atheist skeptic queer hippie coder dreamer Sat, 16 Jan 2010 07:03:26 +0000 http://wordpress.org/?v=2.9.2 en hourly 1 Record methuselah pattern found in Conway’s Game of Life http://blog.usefuldreams.org/?p=78 http://blog.usefuldreams.org/?p=78#comments Sat, 16 Jan 2010 06:44:32 +0000 admin http://blog.usefuldreams.org/?p=78 It happened right here, in the East Wing of our Useful Dreams Laboratories ! Using Nathaniel Johnston’s Online Life-Like CA Soup Search Python scripts, and the previously featured superbly versatile cellular automata program Golly, one of our carefully overclocked PCs stumbled upon the pattern below, which has a life span of 31,192 generations.  Such patterns are generally called Methuselahs, because it takes an unexpectedly large number of iterations of chaotic development before they settle down into more predictable remnants.

Co-named for both Methuselah’s (apocryphal) wife Edna, and the famous Australian housewife-and-Megastar Dame Edna, we are proud to present the pattern itself:

Edna

Edna in all her glory

]]> http://blog.usefuldreams.org/?feed=rss2&p=78 1 CATHY – a great free file catalog program http://blog.usefuldreams.org/?p=73 http://blog.usefuldreams.org/?p=73#comments Fri, 25 Dec 2009 02:28:29 +0000 admin http://blog.usefuldreams.org/?p=73 For years I’ve been looking for a fast program to index my growing collection of external drives and backup optical discs.  All that most people need for this is filename-searching and explorer-style browsing the off-line drives and DVD/CD-roms – no fancy content- or thumbnail-indexing  or mp3-embedded information searches, just a list of folders and filenames, sizes and dates. Programs like Google Desktop Search and Windows’ own indexing searchers fail because they are slow and not designed to work with removable drives.

The best solution IMHO is to use CATHY, written by Robert Vasicek.  It is an ultra-simple freeware program which is lean and fast – searches are nearly instant, and indexing rarely takes more than thirty seconds even for terabytes of files – and it indexes any volume or folder you want, digesting it into a separate, small .caf catalog file which you can move to any folder, put a copy of “cathy.exe”  along with it, and everything just works, no install process required. The interface is simple and can seem a little quirky at first glance, but believe me it’s a trade-off worth making.

It can be found via the Author’s website http://www.mtg.sk/rva/

]]> http://blog.usefuldreams.org/?feed=rss2&p=73 0 Rapid Environment Editor http://blog.usefuldreams.org/?p=67 http://blog.usefuldreams.org/?p=67#comments Sat, 25 Jul 2009 03:31:23 +0000 admin http://blog.usefuldreams.org/?p=67 If you are doing any kind of serious software development on any flavor of Windows, you will have several SDKs and libraries installed, the installers (or manual installation instructions) of which typically add a bunch of paths and other essentials to Window’s permanent environment variables.  To sort these all out, the freeware utility Rapid Environment Editor makes things much, much easier. It even checks and highlights all broken paths instantly.

REE logo

]]> http://blog.usefuldreams.org/?feed=rss2&p=67 1 Crystal Nights http://blog.usefuldreams.org/?p=56 http://blog.usefuldreams.org/?p=56#comments Tue, 30 Jun 2009 19:02:17 +0000 admin http://blog.usefuldreams.org/?p=56 I’m a big fan of science fiction writer Greg Egan. His stories often feature evolving artificial life forms, which start out in computers but usually find a way to transcend their world. His latest story Crystal Nights can be read for free online or downloaded as a pdf file, and an audio version is also available.

Crystal Nights at Interzone

Crystal Nights .pdf file (direct link)

Crystal Nights audio at Transmissions From Beyond

Crystal Nights and other stories – book on Amazon.com ( to be released September 30, 2009 )

Crystal Nights thumbnail

]]> http://blog.usefuldreams.org/?feed=rss2&p=56 2 Hullabalooza III http://blog.usefuldreams.org/?p=44 http://blog.usefuldreams.org/?p=44#comments Mon, 25 May 2009 20:27:13 +0000 admin http://blog.usefuldreams.org/?p=44 Some cool folks we met at a local music festival this weekend had this design on a T-shirt. They may have been the ones that actually started the meme as they mentioned scanning it from a book.

How to resuscitate a lizard

]]> http://blog.usefuldreams.org/?feed=rss2&p=44 3 The Game Of Life http://blog.usefuldreams.org/?p=38 http://blog.usefuldreams.org/?p=38#comments Sat, 23 May 2009 05:05:58 +0000 admin http://blog.usefuldreams.org/?p=38 gollyticker

If you like playing with cellular automata as much as I do, check out this magnificent Open Source project named Golly at http://golly.sourceforge.net/
And consider joining me in nominating it for a SourceForge’s 2009 Community Choice Award:

]]> http://blog.usefuldreams.org/?feed=rss2&p=38 1 Pond Life http://blog.usefuldreams.org/?p=30 http://blog.usefuldreams.org/?p=30#comments Fri, 22 May 2009 04:33:57 +0000 admin http://blog.usefuldreams.org/?p=30 Just as we tried to shoot the frog, a giant dragonfly decided to upstage it.

upstaged50

]]> http://blog.usefuldreams.org/?feed=rss2&p=30 2 Python 3.1 http://blog.usefuldreams.org/?p=14 http://blog.usefuldreams.org/?p=14#comments Sun, 26 Apr 2009 23:39:58 +0000 admin http://blog.usefuldreams.org/?p=14 As a VTune jockey with firm roots in assembly programming, I’m naturally skeptical about relatively slow, interpreted high-level languages, yet I’ve been warming to Python. There are many cases where the savings in time and frustration from being able to clearly express complicated algorithms are worth the trade-off in clock cycles.  And I have great hopes for its speed in the near future, as the Python versions after 3.0 are supposed to concentrate on optimization.  Check out version 3.1 currently in second alpha release, available at http://www.python.org/download/releases/3.1/

]]> http://blog.usefuldreams.org/?feed=rss2&p=14 3 Welcome http://blog.usefuldreams.org/?p=1 http://blog.usefuldreams.org/?p=1#comments Sun, 26 Apr 2009 17:28:59 +0000 admin http://blog.usefuldreams.org/?p=1 Welcome to my first – hopefully somewhat useful – blog site.

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