julia> A = Matrix{Vector{Float64}}([[[-3.0,4.0],[8.0],[7.0, 8.0],[0.0,9.0],[-1.0]] [[-3.0,4.0],[8.0],[7.0, 8.0],[0.0,9.0],[-1.0]]])
5×2 Array{Array{Float64,1},2}:
[-3.0, 4.0]  [-3.0, 4.0]
[8.0]        [8.0]
[7.0, 8.0]   [7.0, 8.0]
[0.0, 9.0]   [0.0, 9.0]
[-1.0]       [-1.0]

julia> A = Matrix{Vector{Float64}}([[[-3.0,4.0],[8.0],[7.0, 8.0],[0.0,9.0],[-1.0]]])

julia> A = hcat(Matrix{Vector{Float64}}(undef, 5, 0), [[-3.0,4.0],[8.0],[7.0, 8.0],[0.0,9.0],[-1.0]])
5×1 Array{Array{Float64,1},2}:
[-3.0, 4.0]
[8.0]
[7.0, 8.0]
[0.0, 9.0]
[-1.0]