Broadcasting like a Matrix

General Usage
2

Ah, I figured it out: you need to define a containertype and getindex for CartesianIndex:

julia> Base.getindex(A::MyMatrix,kj::CartesianIndex{2}) = A[kj[1],kj[2]]

julia> Base.Broadcast.containertype(::MyMatrix) = Array

julia> A .= MyMatrix()
3×3 Array{Float64,2}:
 5.0  5.0  5.0
 5.0  5.0  5.0
 5.0  5.0  5.0
2 Likes