type croc
teeth :: Int64
legs :: Int64
sons :: Vector{Matrix{Float64}}
croc() = new(0,0, Vector{Matrix{Float64}}())
croc(th, gs) = new(th, gs, Vector{Matrix{Float64}}())
croc(th, gs, ns) = new(th, gs, ns)
end
reptile = croc()
reptile.teeth = 4
reptile.legs = 80
push!(reptile.sons, [[3.0 1.0];[4.0 1.0]])
another = croc(80, 4)
sons = Vector{Matrix{Float64}}()
push!(sons, rand(3,1))
push!(sons, rand(4,1))
onemore = croc(80, 4, sons)
@show reptile
@show another
@show onemore
