a character string which contains name of the target file.
only.file
a logical. Only a file is created, if true (default=FALSE).
Value
powerset generates a list of all subsets of x, excluding empty set, if only.file=F.
Details
Suppose you have a set S. The power set is the set off all subsets of S, including empty set and S itself.
The number of elements of the power set is 2^(number of elements of S). You can save the powerset in a file,
if a filename fileout is specified.