Detecting at runtime when bindings go out of scope?

[Ala'a Mohammad]

Custodians from Racket looks like what is described
https://docs.racket-lang.org/reference/eval-model.html#%28part._custodian-model%29

On Fri, Aug 26, 2016 at 5:51 PM, David McClain
<dbm at refined-audiometrics.com> wrote:
> Thanks for both of those references…. Dinosaur indeed… I’m old enough too,
> that I need to avoid walking near the La Brea Tar Pits…
>
> - DM
>
>
> On Aug 26, 2016, at 06:42, Hans Hübner <hans.huebner at gmail.com> wrote:
>
> The Lisp Machine Manual has a nice chapter on resources that may be of
> interest: https://hanshuebner.github.io/lmman/resour.xml
>
>