集合

julia> A=Set([1,2,3]) ; B=Set([1,2,4,5]); # 从可遍历的物品中创建集合

julia> A==B
false

julia> A∪B
Set{Int64} with 5 elements:
  5
  4
  2
  3
  1

julia> A∩B
Set{Int64} with 2 elements:
  2
  1

julia> push!(A,4)
Set{Int64} with 4 elements:
  4
  2
  3
  1

julia> pop!(B,5)
5

julia> push!(B,3)
Set{Int64} with 4 elements:
  4
  2
  3
  1

julia> A==B
true