Make AbstractMeasures broadcastable (#76)

* broadcastable

* bump version

Author: cscherrer

Project.toml

@@ -1,7 +1,7 @@
 name = "MeasureBase"
 uuid = "fa1605e6-acd5-459c-a1e6-7e635759db14"
 authors = ["Chad Scherrer <chad.scherrer@gmail.com> and contributors"]
-version = "0.12.2"
+version = "0.12.3"
 
 [deps]
 ChainRulesCore = "d360d2e6-b24c-11e9-a2a3-2a2ae2dbcce4"

src/MeasureBase.jl

@@ -55,6 +55,8 @@ end
 
 @inline DensityKind(::AbstractMeasure) = HasDensity()
 
+Broadcast.broadcastable(m::AbstractMeasure) = Ref(m)
+
 gentype(μ::AbstractMeasure) = typeof(testvalue(μ))
 
 # gentype(μ::AbstractMeasure) = gentype(basemeasure(μ))

test/runtests.jl

@@ -137,6 +137,10 @@ end
 #     end
 # end
 
+@testset "broadcasting" begin
+    @test logdensityof.(Dirac(2), [1,2,3]) isa Vector{Float64}
+end
+
 @testset "powers" begin
     @test logdensityof(Lebesgue()^3, 2) == logdensityof(Lebesgue()^(3,), 2)
     @test logdensityof(Lebesgue()^3, 2) == logdensityof(Lebesgue()^(3, 1), (2, 0))