@functor Returns (#71)

* functor Returns

* Update src/base.jl

Co-authored-by: Brian Chen <[email protected]>

* Update test/base.jl

---------

Co-authored-by: Brian Chen <[email protected]>

Author: mcabbott

Project.toml

@@ -1,7 +1,7 @@
 name = "Functors"
 uuid = "d9f16b24-f501-4c13-a1f2-28368ffc5196"
 authors = ["Mike J Innes <[email protected]>"]
-version = "0.4.5"
+version = "0.4.6"
 
 [deps]
 LinearAlgebra = "37e2e46d-f89d-539d-b4ee-838fcccc9c8e"

src/base.jl

@@ -10,6 +10,10 @@
 @functor Base.Fix2
 @functor Base.Broadcast.BroadcastFunction
 
+@static if VERSION >= v"1.7"
+  @functor Base.Returns
+end
+
 ###
 ### Array wrappers
 ###

test/base.jl

@@ -50,6 +50,12 @@ end
   @test fmap(x -> x + 10, bf) == Base.Broadcast.BroadcastFunction(Bar(13.3))
 end
 
+VERSION >= v"1.7" && @testset "Returns" begin
+  ret = Returns([0, pi, 2pi])
+  @test Functors.functor(ret)[1] == (value = [0, pi, 2pi],)
+  @test Functors.functor(ret)[2]((value = 1:3,)) === Returns(1:3)
+end
+
 @testset "LinearAlgebra containers" begin
   @test fmapstructure(identity, [1,2,3]') == (parent = [1, 2, 3],)
   @test fmapstructure(identity, transpose([1,2,3])) == (parent = [1, 2, 3],)