How to extract components in an array of arrays

General Usage
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BTW, what I really wanted to do is to generate a vector field on a 2D plane, say, the unit square, and draw that vector field using quiver plot in Plots.jl. So, here is an example on a very small grid.

julia> using LazyGrids # this allows to generate meshes like in MATLAB
julia> X, Y = ndgrid((collect(0:1), collect(0:1));
julia> X
2×2 LazyGrids.GridAV{Int64, 1, 2}:
 0  0
 1  1
julia> Y
2×2 LazyGrids.GridAV{Int64, 2, 2}:
 0  1
 0  1
julia> f(x,y) = [0.0 1.0; 1.0 0.0] * [x; y]; # Just a simple example of generating a vector at (x,y).
julia> A =  f.(X,Y) # pointwise evaluation of f on the mesh
2×2 Matrix{Vector{Float64}}:
 [0.0, 0.0]  [1.0, 0.0]
 [0.0, 1.0]  [1.0, 1.0]

Then, in order to use quiver plot, I need to extract the first components and the second components:

quiver(X[:], Y[:], quiver=(getindex.(A,1)[:], getindex.(A,2)[:]))

Perhaps, there is a better way to generate a vector field, which can easily supply to the quiver plot…