R devel - Jan 2013 - Prevent serialization of an environment?

Within I'm using an environment as a hashtable to cache the results of some
repeated computations in a package. The thing is that the contents of the
cache will not be valid across R sessions, so I would like to make sure
that the cache is cleared if the user saves or restores the workspace (or
when a package is prepared for lazy loading, etc.). Is there a way to mark
an environment so that its contents do not serialize?

Peter

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On 13-01-15 7:39 PM, Peter Meilstrup wrote:
> Within I'm using an environment as a hashtable to cache the results of
some
> repeated computations in a package. The thing is that the contents of the
> cache will not be valid across R sessions, so I would like to make sure
> that the cache is cleared if the user saves or restores the workspace (or
> when a package is prepared for lazy loading, etc.). Is there a way to mark
> an environment so that its contents do not serialize?
>
Seems like the refhook argument to serialize() could do that.

Duncan Murdoch