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2007 Aug 07
3
About grep
Hi,everyone. I have a problem when using the grep. for example: a <- c("aa","aba","abac") b<- c("ab","aba") I want to match the whole word,so grep("^aba$",a) it returns 2 but when I used it a more useful way: grep("^b[2]$",a), it doesn't work at all, it can't find it, returning integer(0). How can I chang the