Re: [Rd] Embedding R and registering routines

From: Seth Falcon <>
Date: Tue, 01 May 2007 14:59:43 -0700

Simon Urbanek <> writes:

> Duncan,
> are you going to take care of this? I have a quick solution for R-
> devel that adds a special entry if requested.
> I'm not quite convinced that we need as much flexibility as adding
> arbitrary DllInfos, because the embedding application is a really
> special concept (everything else is dynamically loaded except for the
> application). In a sense "base" does that for non-embedded R and the
> distinction is that it doesn't allow dynamic lookup. I don't think
> adding arbitrary DllInfos is wise, because we would have to expose
> DLL handles etc. - do we really want to do that? And as for adding
> NULL-handle DLLInfos, there is only one legitimate use and that is
> the embedding application, so anything else looks more like abuse to
> me... (just lazy solution to not have to determine the dll). Also the
> embedded DllInfo cannot be unloaded by design, so it doesn't need
> anything complicated...

Perhaps I'm not understanding the issues at hand, but I think there are other use cases for a mechanism accessible to package developers to dynamically register routines. Just as R can load packages to make new routines available, I don't see why an R package should not be able to provide an analogous plugin mechanism of its own.

+ seth

Seth Falcon | Computational Biology | Fred Hutchinson Cancer Research Center

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