Adjust type of set difference components

Project.toml

@@ -1,7 +1,7 @@
 name = "DifferencesBase"
 uuid = "f7c07657-0d0a-4d46-b086-01df223a7b4f"
 authors = ["Lars Schütz"]
-version = "0.2.0"
+version = "0.3.0"
 
 [deps]
 OrderedCollections = "bac558e1-5e72-5ebc-8fee-abe8a469f55d"

src/set.jl

@@ -4,10 +4,13 @@
 Set difference.
 """
 struct SetDifference{T}
-    comvals::Vector{T}
-    addvals::Vector{T}
-    remvals::Vector{T}
+    comvals::Set{T}
+    addvals::Set{T}
+    remvals::Set{T}
 end
+SetDifference(comvals::AbstractVector{T}, addvals::AbstractVector{T},
+            remvals::AbstractVector{T}) where {T} =
+    SetDifference(Set(comvals), Set(addvals), Set(remvals))
 
 # Set difference equality operator
 ==(a::SetDifference, b::SetDifference) =

test/set.jl

@@ -1,11 +1,15 @@
 @testset "set difference" begin
-    a = SetDifference([1], [2, 3], [4, 5])
+    a = SetDifference(Set([1]), Set([2, 3]), Set([4, 5]))
     b = SetDifference([1], [2, 3], [4, 5])
     c = SetDifference([1], [2, 3], [4, 5])
 
     @testset "constructors" begin
         @test isa(a, SetDifference)
-        @test a.comvals == [1] && a.addvals == [2, 3] && a.remvals == [4, 5]
+        @test (a.comvals == Set([1]) && a.addvals == Set([2, 3])
+                && a.remvals == Set([4, 5]))
+        @test isa(b, SetDifference)
+        @test (b.comvals == Set([1]) && b.addvals == Set([2, 3])
+                && b.remvals == Set([4, 5]))
     end
 
     @testset "equality operator" begin
@@ -20,8 +24,8 @@
     end
 
     @testset "accessors" begin
-        @test common(a) == [1]
-        @test added(a) == [2, 3]
-        @test removed(a) == [4, 5]
+        @test common(a) == Set([1])
+        @test added(a) == Set([2, 3])
+        @test removed(a) == Set([4, 5])
     end
 end