Tue Dec 25 10:36:21 EST 2012


CELL is probably the better approach because it is simpler.  It is
also memory efficient so might be a good idea for embedded systems.
However, EX is working, and has support for variable-size vectors.

How to abstract substrate?

One thing I do not like about EX is the build system.  It's dependency
on mzscheme is quite annoying.