Support Sets by implementing hash (#60)

JuliaArrays · Feb 4, 2021 · 897b7a0 · 897b7a0 · dlfivefifty · Feb 4, 2021
1 parent 667656f
commit 897b7a0
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Showing 3 changed files with 12 additions and 2 deletions.
diff --git a/Project.toml b/Project.toml
@@ -1,6 +1,6 @@
 name = "InfiniteArrays"
 uuid = "4858937d-0d70-526a-a4dd-2d5cb5dd786c"
-version = "0.9.2"
+version = "0.9.3"
 
 [deps]
 ArrayLayouts = "4c555306-a7a7-4459-81d9-ec55ddd5c99a"

diff --git a/src/Infinity.jl b/src/Infinity.jl
@@ -375,4 +375,7 @@ Base.Checked.checked_add(::Integer, x::SignedInfinity) = x
 Base.Checked.checked_add(x::SignedInfinity, ::Integer) = x
 
 
-Base.to_index(::Infinity) = ∞
+Base.to_index(::Infinity) = ∞
+
+
+Base.hash(::Infinity) = 0x020113134b21797f # made up
diff --git a/test/runtests.jl b/test/runtests.jl
@@ -1025,3 +1025,10 @@ end
         AbstractArray{Float64}(transpose(1:∞)) ≡ AbstractArray{Float64}(transpose(Base.OneTo(∞))) ≡ 
         transpose(InfUnitRange(1.0))
 end
+
+@testset "Set" begin
+    s = Set([∞,1])
+    @test 1 in s
+    @test ∞ in s
+    @test 2 ∉ s
+end