[Rcpp-devel] Efficient DataFrame access by row & column

From: John Merrill [mailto:john.merrill at gmail.com]
Sent: Tuesday, February 19, 2013 5:24 PM
To: Ken Williams
Cc: Yan Zhou; Dirk Eddelbuettel; rcpp-devel at lists.r-forge.r-project.org
Subject: Re: [Rcpp-devel] Efficient DataFrame access by row & column

I'm a little puzzled by your question.  Could you use a reference instead of instantiating a new copy?

I would love to use a reference, but I don't know how.  That's in fact the essence of my question. =)

Is there already some example code somewhere showing how to get reference to a DataFrame column without copying?  I must be just missing it.

 -Ken


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