/dev/tty » Open Source Projects

Simple ranked text search for MongoDB

Ward Bekker — Mon, 08 Feb 2010 14:46:28 +0000

In this code snippit you can see how to do a basic ranked text search for MongoDB. The code relies on two simple mapreduce operations. One to create an inverted index from some demo text, and a second one to score the matching documents based on query term hits.

Compiling Apache from source on Ubuntu 9.10 (Karmic Koala)

Henry Snoek — Wed, 11 Nov 2009 15:43:14 +0000

Last week my OS got upgraded to Ubuntu 9.10. After that I wanted to compile Apache from source. Unfortunately I got this build error:

htpasswd.c:101: error: conflicting types for ‘getline’
/usr/include/stdio.h:651: note: previous declaration of ‘getline’ was here
make[2]: *** [htpasswd.o] Error 1

This is fixed by replacing getline with parseline on line 651 in /usr/include/stdio.h

Kudos to HowtoForge for pointing this out.

100% completeness-fu

Josh Kalderimis — Wed, 23 Sep 2009 21:25:51 +0000

The age of completeness-fu is upon us!

Sometimes validations just don’t cut the mustard and all you want to do is to grade an instance based on how complete its information is. For example, a Location has a title and a description but no address, thus its only 60% complete. Or maybe title is worth more than description and address so its 80% complete. Whatever the case, this is not a new problem and recreating the wheel is a bit unnecessary, so welcome to completeness-fu.

The dsl is based on the thinking-sphinx configuration, which is nice, clean and simple, but very effective.

Here is a sample of the config code used to define a set of checks for a completeness score:

define_completeness_scoring do
check :title, lambda { |per| per.title.present? }, :high
check :description, lambda { |per| per.description.present? }, :medium
check :main_image, lambda { |per| per.main_image? }, :low
end

It still needs some more tlc, but its a nice start and a simple solution for a common problem.

So please, have a play around with it, fork the code, make some improvements/enhancements and let me know what you think.

Cake’s Progress

Michel Rijnders — Mon, 24 Aug 2009 17:56:25 +0000

Cake is progressing rather slowly at the moment. Its next release (0.2) is about receiving requests, and thus will involve lots of networking code. Since I know very little about network programming I am first working my way through "UNIX Network Programming", Volume 1.

In the meantime, to still do some Haskell coding, I’m trying to solve some Perl and Ruby quizzes in Haskell. I’ll post my solutions plus explanations here.