[Rd] built-in NAMED(obj) from within R

[Benjamin Tyner]

Hello,

Is it possible to retrieve the 'named' field within the header (sxpinfo) 
of a object, without resorting to a debugger, external code, etc? In 
other words is there a built-in equivalent to the "getnamed" subroutine 
described here:

http://tolstoy.newcastle.edu.au/R/e2/devel/07/09/4496.html

The goal is to ascertain whether a copy of an object has been made.

Thanks,
Ben