Hessian coloring

[ArnoStrouwen]

Is it possible to use jacobian coloring from SparseDiffTools in places like

Optimization.jl/src/function/zygote.jl

Lines 44 to 45 in 24ad25d

	res .= ForwardDiff.jacobian(θ) do θ
	Zygote.gradient(x ->_f(x, args...), θ)[1]

[ChrisRackauckas]

Yes it is. It would probably be best to add methods in SparseDiffTools.jl and then use it.

JuliaDiff/SparseDiffTools.jl#142