Update version

Project.toml

@@ -1,7 +1,7 @@
 name = "NamedDims"
 uuid = "356022a1-0364-5f58-8944-0da4b18d706f"
 authors = ["Invenia Technical Computing Corporation"]
-version = "1.1.1"
+version = "1.2.2"
 
 [deps]
 AbstractFFTs = "621f4979-c628-5d54-868e-fcf4e3e8185c"

src/cat.jl

@@ -68,7 +68,7 @@ for (f, nf, tf, tup) in
             return $nf(mapreduce(dimnames, unify_names_longest, A), A)
         end
 
-        function $nf(Linner, A)
+        @inline function $nf(Linner, A)
             Louter = ($tup..., dimnames(A)...)
             Lnew = unify_names_longest(Linner, Louter)
             data = Base.$tf(mapreduce(eltype, promote_type, A), A) # same as Base

src/functions_math.jl

@@ -120,6 +120,11 @@ function Base.inv(nda::NamedDimsArray{L,T,2}) where {L,T}
     return NamedDimsArray{names}(data)
 end
 
+function Base.diff(nda::NamedDimsArray{L}; dims) where {L}
+    data = diff(parent(nda); dims=dim(L, dims))
+    return NamedDimsArray{L}(data)
+end
+
 # Statistics
 for fun in (:cor, :cov)
     @eval function Statistics.$fun(a::NamedDimsArray{L,T,2}; dims=1, kwargs...) where {L,T}

test/cat.jl

@@ -95,8 +95,8 @@ for (f, d) in zip((vcat, hcat), (1, 2))
         end
 
         @testset "reduce forms" begin
-            @test reduce(f, [nda, nda]) == f(nda, nda)
-            @test reduce(f, [ndv, ndv]) == f(ndv, ndv)
+            @test @inferred(reduce(f, [nda, nda])) == f(nda, nda)
+            @test @inferred(reduce(f, [ndv, ndv])) == f(ndv, ndv)
 
             v1 = NamedDimsArray([a, a], dimnames(nda, d))
             v2 = NamedDimsArray([a, nda, a, nda], dimnames(nda, d))

test/functions_math.jl

@@ -208,6 +208,13 @@ end
     @test inv(nda) * nda ≈ NamedDimsArray{(:b, :b)}([1.0 0; 0 1])
 end
 
+@testset "diff" begin
+    arr = [1.0 2; 3 4]
+    nda = NamedDimsArray{(:a, :b)}(arr)
+    @test diff(nda; dims=:a) == diff(arr; dims=1)
+    @test typeof(diff(nda; dims=:a)) == typeof(nda)
+    @test diff(nda; dims=:b) == diff(nda; dims=2)
+end
 
 @testset "cov/cor" begin
     @testset "symmetric_names" begin