StaticArrays being used with DifferentialEquation callbacks

General Usage Performance
2

StaticArrays are immutable, so you have to build a new one:

function big_volume_jump!(integrator)
    integrator.u = vcat(SA[integrator.u[1] + 250.0],integrator.u[2:end])
end

or using StaticArrays.setindex can be helpful.

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