Hello,
I've put the first release of Data.StringMap here..
http://homepages.nildram.co.uk/~ahey/HLibs/Data.StringMap/
The implementation is a bit different than what was discussed
earlier as I decided the first version would burn heap unecessarily.
It's still based on Tries though.
I'm afraid I
An extended technical report has been released at:
TR & software: http://homepages.cwi.nl/~ralf/OOHaskell/
TR: http://arxiv.org/abs/cs.PL/0509027
"Haskell's overlooked object system"
10 September 2005, 79 pages
by O. Kiselyov (FNMOC, Monterey, CA, USA)
and R. Laemmel (Microsoft Corp., WA, USA)