elements -- list of elements

i1 : set{1,2,3,1,2,4}

o1 = set {1, 2, 3, 4}

o1 : Set

i2 : elements oo

o2 = {1, 2, 3, 4}

o2 : List

i3 : tally apply(10, i -> random 5)

o3 = Tally{2 => 4}
           3 => 4
           4 => 2

o3 : Tally

i4 : elements oo

o4 = {4, 4, 2, 2, 2, 2, 3, 3, 3, 3}

o4 : List