On Sep 15, 2010, at 11:16 AM, raje...@cse.iitm.ac.in wrote:
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?
> txt <- "<rh>a,b,c,d<rh>"
>
> grep("^<rh>.+<rh>$", txt)
[1] 1
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