Callbacks

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A library of of callbacks useful for monitoring/measuring simulations.

This package is most useful in combination with Lens.

The following example will update a UnicodePlot at every time step.

using Callbacks, Lens

struct Loop end
function simulation()
  x = 0.0
  while true
    y = sin(x)
    lens(Loop, (x = x, y = y))
    x += rand()
  end
end

@leval Loop => plotscalar() simlulation()

This may be a bit more frequent than what I need. Rather than update every time step, we can update every 1000000.

@leval Loop => (everyn(1000000) → plotscalar()) simulation()