Greetings anyone, Some time ago I with a friend of mine implemented a toy interactive simulator of neural network activity. It has a totally imperative design and uses Gtk2hs for user interface parts. The darcs repository is available here: http://vyal.ru/code/spiking_neuro Now we decided to develop it further to try out some nice biologically inspired ideas. At first I wanted to rewrite the simulator in C++, since that language seems to match the current design more closely. But recently I've read some FRP related papers and have decided to rethink the overall approach. I'd like to hear some comments from the community on the current code and advises on possible improvements and other designs and their pros and conses. The performance is not critical for me, I'm looking for maximal flexibility and clearness so the model can easily be modified and extended. Best wishes, Dmitry