grep with special characters

Question

I want to find the elements that contains star character in the following vector.

s <- c(\"A\",\"B\",\"C*\",\"D\",\"E*\")
grep(\"*\",s)

[1] 1 2 3 4 5
         


        

Answer 1

You need to escape special characters twice, once for R and once for the regular expression:

grep('\\*', s)