add spzeros(::Tuple{<:Integer}) (#40515)

Author: abraunst

stdlib/SparseArrays/src/sparsevector.jl

@@ -125,8 +125,11 @@ Base.unaliascopy(S::SparseVector) = typeof(S)(length(S), unaliascopy(nonzeroinds
 ### Construct empty sparse vector
 
 spzeros(len::Integer) = spzeros(Float64, len)
+spzeros(dims::Tuple{<:Integer}) = spzeros(Float64, dims[1])
 spzeros(::Type{T}, len::Integer) where {T} = SparseVector(len, Int[], T[])
+spzeros(::Type{T}, dims::Tuple{<:Integer}) where {T} = spzeros(T, dims[1])
 spzeros(::Type{Tv}, ::Type{Ti}, len::Integer) where {Tv,Ti<:Integer} = SparseVector(len, Ti[], Tv[])
+spzeros(::Type{Tv}, ::Type{Ti}, dims::Tuple{<:Integer}) where {Tv,Ti<:Integer} = spzeros(Tv, Ti, dims[1])
 
 LinearAlgebra.fillstored!(x::SparseVector, y) = (fill!(nonzeros(x), y); x)
 

stdlib/SparseArrays/test/sparsevector.jl

@@ -75,7 +75,11 @@ end
 @testset "other constructors" begin
     # construct empty sparse vector
 
-    @test exact_equal(spzeros(Float64, 8), SparseVector(8, Int[], Float64[]))
+    for dims in (8, (8,))
+        @test exact_equal(spzeros(dims), SparseVector(8, Int[], Float64[]))
+        @test exact_equal(spzeros(Float64, dims), SparseVector(8, Int[], Float64[]))
+        @test exact_equal(spzeros(Float64, Int16, dims), SparseVector(8, Int16[], Float64[]))
+    end
 
     @testset "from list of indices and values" begin
         @test exact_equal(