[Design] Haystack and continuations

[Don Dwiggins]

In September, Hamish Harvey described some of the neat things about
Haystack, including UI continuations.  (Harvey's message was posted Fri, 26
Sep 2003; there's an article describing Haystack's continuations at
http://haystack.lcs.mit.edu/papers/uist2003-uicont.pdf.)

I just wanted to add a reference to a tutorial article on continuations
using Python: "Continuations Made Simple and Illustrated" by Denys Duchier
at http://www.ps.uni-sb.de/~duchier/python/continuations.html.

I also want to second Harvey's enthusiasm for the idea.  When the design
work on CPIA gets into high gear, I strongly recommend reviewing this
technique.

Regards,
-- 

Don Dwiggins
d dot l dot dwiggins, who can be reached via computer.org
"I always know a good idea when I hear it, because of the feeling of terror
that seizes me."

Ben Rick
CEO Lockhead