[R] grep TRUE/FALSE

Is there a way to get a TRUE/FALSE condition as result, when using grep ? c=The file will be updated if grep(updated,c)==1 then I get TRUE but How can I deal with grep(new,c) ? it gives integer(0) Thanks in advance. __ R-help@r-project.org mailing

Re: [R] grep TRUE/FALSE

Yes, use grepl() rather than grep(). uwe Ligges On 25.01.2012 12:28, Ana wrote: Is there a way to get a TRUE/FALSE condition as result, when using grep ? c=The file will be updated if grep(updated,c)==1 then I get TRUE but How can I deal with grep(new,c) ? it gives integer(0) Thanks in