If I understand correctly, you need the negation of the %in%
operator. Something like this should work:
subset(b, !(y %in% a$x))
> subset(b, !(y %in% a$x))
y
5 5
6 6
If I understand correctly, you need the negation of the %in%
operator. Something like this should work:
subset(b, !(y %in% a$x))
> subset(b, !(y %in% a$x))
y
5 5
6 6