get_set: Get the set with the given index from an implicitly ordered set.
Description
Get the set with the given index from an implicitly ordered set.
Usage
get_set(set_of_sets, index)
Arguments
set_of_sets
A set
of set
s. The elements of the outer set
should be ordered, e.g. as it is when the elemets of the sets within it
are integers.
index
The index of the set you wish to be returned.