[reactive] automatic recompilation/re-execution?

[Shahbaz]

In the mailing list announcement, one of the potential uses of this
library is "automatic recompilation/re-execution."  This sounds very
interesting, is there more information?  Is this at all similar to
"Living it up with a Live Programming Language"
[http://lambda-the-ultimate.org/node/2149] ?

Also, are there any tutorials that show how this library can be used
(rather than just explaining semantics)?

Thanks