Hi all,

I don't know if this is the correct venue for this question, but I am sure
that someone will correct me if I am in the wrong list.

I have been searching throughout R for a function that can find the
intersection of multiple sets of "things". Say for instance, I have a list
of $n$ character vectors and would like to find the intersection of all $k$
subsets. I don't believe that there is such a function to do this (or am I
wrong?). It is a pretty easy to encode such a function...there was an e-mail
about how a recursive function to intersect an arbitrary number of sets
which is elegant and useful (sorry I forgot the person's name who wrote the
2 line function).

My question is two-fold:

1. If such a function already exists, what is it called?
2. If such a function does not exists, it is worthwhile to encode it (i.e.
can I send my code to someone?).

Cheers,
--tony

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