today I added a useful new prefix class to the database stuff:
This is a prefix class for '+Aux', extending it so that it combines the
multiple attributes into a single multi-dimensional key. This allows
access to ranges of values (as opposed to a plain +Aux, which gives you
access to explicit combinations of multiple keys, but not to an
rectangle, box, etc. as a confined region).
Typical examples would be geographic coordinates (2 dimensions) or GPS
data (3 dimensions).
BTW, I felt that I should finally try Twitter! So I created an account a
few days ago, and just now I twittered (tweeted, twote?) the good news
about the UB-Tree into the world :D
@Henrik: You are the first (and only one so far) I'm following ;-)