[Rcpp-devel] binding, combining vectors

[Walter Mascarenhas]

Romain,

   what about "join"?

       walter.

On Thu, Dec 13, 2012 at 1:15 PM, Andreas Alfons
<andreas.alfons at kuleuven.be>wrote:

> Hi Romain,
>
> "bind" may be confusing to R users, because "cbind" and "rbind" exist
> in R and return matrices. In my opinion, "combine" is a better option.
>
> - Andreas
>
>
> On Thu, Dec 13, 2012 at 10:01 AM, Romain Francois
> <romain at r-enthusiasts.com> wrote:
> > Hello,
> >
> > I'd like to add a functionality to "bind" vectors of the same type (well
> > sugar expressions really, but let's say it is vectors for the sake of
> > this email).
> >
> > So essentially I'd like something similar to what "c" does in R :
> >
> >  > c( letters, letters )
> >   [1] "a" "b" "c" "d" "e" "f" "g" "h" "i" "j" "k" "l" "m" "n" "o" "p"
> > "q" "r" "s"
> > [20] "t" "u" "v" "w" "x" "y" "z" "a" "b" "c" "d" "e" "f" "g" "h" "i" "j"
> > "k" "l"
> > [39] "m" "n" "o" "p" "q" "r" "s" "t" "u" "v" "w" "x" "y" "z"
> >
> >
> > I don't want to call it "c", and I'd like suggestions : combine, bind ?
> >
> > The idea is to avoid writing code like this:
> >
> > CharacterVector x, y ;
> > CharacterVector z( x.size() + y.size() ) ;
> > int i=0;
> > for( ; i<x.size(); i++) z[i] = x[i] ;
> > for( int j=0; j<y.size(); i++, j++) z[i] = y[j] ;
> >
> > I know it is not a big deal for people to write this code, but for
> > example this does not handle the names of the elements, ... and
> > internally I can use more efficient code
> >
> > Romain
> >
> > --
> > Romain Francois
> > Professional R Enthusiast
> > +33(0) 6 28 91 30 30
> >
> > R Graph Gallery: http://gallery.r-enthusiasts.com
> >
> > blog:            http://romainfrancois.blog.free.fr
> > |- http://bit.ly/RE6sYH : OOP with Rcpp modules
> > `- http://bit.ly/Thw7IK : Rcpp modules more flexible
> >
> > _______________________________________________
> > Rcpp-devel mailing list
> > Rcpp-devel at lists.r-forge.r-project.org
> > https://lists.r-forge.r-project.org/cgi-bin/mailman/listinfo/rcpp-devel
>
>
>
> --
> Andreas Alfons
> Faculty of Business and Economics, KU Leuven
> www.econ.kuleuven.be/andreas.alfons/public/
> _______________________________________________
> Rcpp-devel mailing list
> Rcpp-devel at lists.r-forge.r-project.org
> https://lists.r-forge.r-project.org/cgi-bin/mailman/listinfo/rcpp-devel
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.r-forge.r-project.org/pipermail/rcpp-devel/attachments/20121213/c7bb01d9/attachment.html>