[Rcpp-devel] efficient ingestion of "sparse csv"

Dirk Eddelbuettel edd at debian.org
Tue May 11 05:19:14 CEST 2021


In the broad terms of the question the best answer may be a simple "sure".
More seriously, there have been many approaches.  Consider for example the
recent Rcpp Gallery post lead by Zach (with some edits by me):

It's focus on not copying <i,p,x> again if we already have them as R vectors,
which is a fair point. If the goal is to get to SuperLU via (Rcpp)Armadillo
then I do not think you can avoid the (internal) copies.  As always, the
answer may be "it depends".

Hope this helps, happy to refine,  Dirk

https://dirk.eddelbuettel.com | @eddelbuettel | edd at debian.org

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