regex - How to grep a vector and return a single TRUE or FALSE?

Question

Is there a grep function in R that returns TRUE if a pattern is found anywhere in the given character vector and FALSE otherwise?

All the functions I see return a vector of the current positions of each element found.

Answer 1

possibly a combination of grepl() and any()?

like

> foo = c("hello", "world", "youve", "got", "mail")
> any(grepl("world", foo))
[1] TRUE
> any(grepl("hi", foo))
[1] FALSE  
> any(grepl("hel", foo))
[1] TRUE

your questions a little unclear as to whether you want that last example to return true or not