Re: Transient environment with standard functions

[Basa Centro <basa.centro@gmail.com>]

Hi Matthew,

[I know this reply is a little delayed.  Please let us know how you
did it if you have already solved the problem.]

Are you using eval-string?

https://www.gnu.org/software/guile/manual/html_node/Fly-Evaluation.html#Fly-Evaluation

It might help for you to post a minimal code sample of what "almost
works" and point out what doesn't.  Also, there may be a simpler
technique for what you are trying to accomplish--can you backtrack us
to a higher level motivation?  It seems like you need a read-only
environment with a read/write one added on.

(Basa)


On 5/28/16, Matthew Keeter <matt.j.keeter@gmail.com> wrote:
> I’m trying to generate a temporary, transient environment that a useful set
> of functions in it.
>
> The use case is eval’ing a set of small code strings.  Each environment
> needs to be
> independent, so previous eval’s don’t leave anything in the environment.
>
> I can make a dummy environment with (null-environment 5), but it’s missing
> everything
> useful.  Calling (scheme-report-environment 5) gives me a useful
> environment, but the
> environment is shared (so effects from one eval can carry over, which is
> undesirable).
>
> Any pointers?  (resolve-module) seems like it could be useful, but the
> #:version argument
> doesn’t seem to work.
>
> Thanks,
> Matt
>