[R] Check for presence of object in group of objects

From: Christoph Heibl <christoph.heibl_at_gmx.net>
Date: Wed 31 Jan 2007 - 10:00:42 GMT

Dear List,

must be simple, but i got stuck on this...

Ive been trying around for some time, but I could not find a straigthforward way to do this:
How can one ask if a certain object is element of a certain group of objects, e.g stored in a vector?

x <- c("a", "b", "c")
# is there a simple function which returns: is "a" part of x?
is "d" part of x?
FALSE Thanks a lot

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