Hello, I create a VECSXP(call it A) with size N(~ 5000), i then proceed to fill the elements and find out I don't need to fill more than M (M<< N). Thus if i return A to the user's R code, he/she will see a list of length 5K of which N-M are NULLs.
To avoid this, I create a new VECSXP B of length M and /duplicate/ the elements of A. Since I do this often, it appears to be wasteful, so can I a) is there a resize function for a VECSXP? if not b) can i just do something like SET_VECTOR_ELT(B,i, VECTOR_ELT(A,i)) instead of wrapping VECTOR_ELT(A,i) inside a call to Rf_duplicate (i will be UNPROTECTING A and B, though I will return B) I suppose I can do (b), since B (since it is being returned) is automatically protected and therefore all its elements will also be protected, correct? Thank you Saptarshi ______________________________________________ R-devel@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-devel
