Tiny package for lazy structured grids:
julia> using StructuredGrids
julia> g = grid(-2:2, 1:3)
5×3 StructuredGrid.Grid{Tuple{Int64,Int64},2,Tuple{UnitRange{Int64},UnitRange{Int64}}}:
(-2, 1) (-2, 2) (-2, 3)
(-1, 1) (-1, 2) (-1, 3)
(0, 1) (0, 2) (0, 3)
(1, 1) (1, 2) (1, 3)
(2, 1) (2, 2) (2, 3)
julia> g[2,2]
(-1, 2)It's more or less the same as Iterators.product(-2:2, 1:3), but it allows indexing as well and subtypes AbstractArray.