Le 15/09/10 17:16, raje...@cse.iitm.ac.in a écrit :
Hi, I need to check if a string "<rh>a,b,c,d<rh>" is delimited by two"<rh>" 's as efficiently as possible(I need to do this a lot of times) and return TRUE. Can someone suggest a good technique?
Hi Rajesh, > f <- function( x ) grepl( "^<rh>.*<rh>$", x ) > f( "<rh>a,b,c,d<rh>" ) [1] TRUE See ?grepl for details. Romain -- Romain Francois Professional R Enthusiast +33(0) 6 28 91 30 30 http://romainfrancois.blog.free.fr |- http://bit.ly/cCmbgg : Rcpp 0.8.6 |- http://bit.ly/bzoWrs : Rcpp svn revision 2000 `- http://bit.ly/b8VNE2 : Rcpp at LondonR, oct 5th ______________________________________________ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
