Getting the name of a SEXP type in package code?
type2char is itself a fairly recent addition (there is also type2str, which is older) that I found useful for improving messages in R itself. I have not encountered such a need in package code, but the function is exported. This is not a request to move type2char from Defn.h to Rinternals.h, and I don't understand why not: what else is needed?
On Tue, 7 Nov 2006, Martin Maechler wrote:
"Seth" == Seth Falcon <sfalcon at fhcrc.org>
on Tue, 07 Nov 2006 06:55:06 -0800 writes:
Seth> Hi, Seth> Is there an alternative to type2char that is available for use in Seth> package code? It would be useful for producing more informative error Seth> messages. I haven't looked closely, but I vaguely remember that I had thought in the past, (a version of) type2char() should be made part of R's API. Exactly because of the reason you give. A more sensible name for the exported function would probably be R_type2char or Rtype_to_char or Rtype_as_char
It is exported as Rf_type2char.
If you are going to provide a patch (against R-devel), you'd ideally also include the corresponding entry in doc/manual/R-exts.texi ... (:-) Martin PS: I will be mostly absent from e-mail for the rest of the week.
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Brian D. Ripley, ripley at stats.ox.ac.uk Professor of Applied Statistics, http://www.stats.ox.ac.uk/~ripley/ University of Oxford, Tel: +44 1865 272861 (self) 1 South Parks Road, +44 1865 272866 (PA) Oxford OX1 3TG, UK Fax: +44 1865 272595