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{0 => 4}
           1 => 3
           2 => 3

o3 : Tally

i4 : elements oo

o4 = {0, 0, 0, 0, 1, 1, 1, 2, 2, 2}

o4 : List