A tensor of zeros (Julia)

ZeroTensor.jl

"A tensor of zeros"
struct ZeroTensor{T <: Number, N} <: AbstractArray{T,N}
    dims::NTuple{N,Int}
    function ZeroTensor{T,N}(dims::Vararg{Integer,N}) where {T <: Number, N}
        all(dims .≥ 0) || error("invalid ZeroTensor dimensions")
        new(dims)
    end
end
ZeroTensor(T::DataType, dims::Vararg{Integer,N}) where N = ZeroTensor{T,N}(dims...)
ZeroTensor(dims::Vararg{Integer,N}) where {N} = ZeroTensor{Float64,N}(dims...)
Base.size(a::ZeroTensor) = a.dims
function Base.getindex(a::ZeroTensor{T,N}, i::Vararg{Integer,N}) where {T,N}
    all(1 .≤ i .≤ a.dims) || throw(BoundsError(a, i))
    return zero(T) 
end