Re: local eval

["Daniel Lakeland" <dlakelan@hotmail.com>]

Thanks to:
Mikael Djurfeldt 
Ian Bicking 
and
Sascha Ziemann 

for the help with local-eval.... the upshot being that you have to use 
it like:

(local-eval xyzpdq-expression-goes-here (the-environment))

where in recent versions of guile, the-environment has been defined like 
this

(define the-environment
(procedure->syntax (lambda (x env) env)))

and it returns the current environment...

I think I sent a followup to the individuals rather than the list since 
there's no "reply-to" field from guile list messages, and I wasn't 
paying attention...

knowing how to do local evaluations is clearly a boon for anyone doing 
interpreting of different languages from scheme. hope this is helpful to 
someone else as well...

I wouldn't mind editing and compiling some more complete docs on the 
whole evaluation section of the guile manual, if someone could explain 
to me what all the various things did, like procedure->syntax, and 
procedure->macro, and procedure->memoizing-macro....

BTW: I finally implemented my code differently so I didn't actually need 
the local-eval but still it's nice to know, since metaprogramming is 
definitely a useful ability.



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