I know this is a very basic question, but I can't seem to find the answer anywhere.
If I have a vector of strings like this:
a <- c("a", "b", "bb", "c", "d", "dd", "e")
And I want to check which elements are equal to either "b" OR "d" exactly, so not using grep, what should I do?
I was expecting something like:
a == "b" || "d"
to get this result:
[1] FALSE TRUE FALSE FALSE TRUE FALSE FALSE
Obviously that command does not work, and I am not sure how to use "or" in this case.
Thank you!
