Hi,
I need to check if a string rha,b,c,drh 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?
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On Sep 15, 2010, at 10:16 AM, raje...@cse.iitm.ac.in wrote:
Hi,
I need to check if a string rha,b,c,drh 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?
See ?grep and ?regex
grepl(^rh.*rh$,
Le 15/09/10 17:16, raje...@cse.iitm.ac.in a écrit :
Hi,
I need to check if a string rha,b,c,drh is delimited by tworh 's as
efficiently as possible(I need to do this a lot of times) and return TRUE. Can someone suggest a good technique?
Hi Rajesh,
f - function( x ) grepl( ^rh.*rh$, x )
On Sep 15, 2010, at 11:16 AM, raje...@cse.iitm.ac.in wrote:
Hi,
I need to check if a string rha,b,c,drh 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 - rha,b,c,drh
grep(^rh.+rh$, txt)
great! Thanks
- Original Message -
From: David Winsemius dwinsem...@comcast.net
To: raje...@cse.iitm.ac.in
Cc: r-help r-help@r-project.org
Sent: Wed, 15 Sep 2010 21:12:27 +0530 (IST)
Subject: Re: [R] characters in a string
On Sep 15, 2010, at 11:16 AM, raje...@cse.iitm.ac.in wrote
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