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2003 Nov 04
1
Architecting an optimization with external calls
...ove), and then pass it on to subsequent
calls. The data would be the top of an object graph (i.e., there are
pointers to disconnected chunks of memory) and it is not clear to me how
to do this. First, the documentation doesn't indicate any "opaque" data
type; should I use character (STRXP)? Second, I'm not sure how to
protect it and the other chunks of memory. Does each one need to go
inside a PROTECT call? And is it safe to have one invocation from R do
PROTECT, and another much later one do UNPROTECT (all the examples I saw
had both calls within the same function invocation...