Module controller 

Step through a fit cycle by cycle, rather than running it all at once.

fit_with runs to the end and gives back only the final result. For debugging or third-party monitoring, you can instead drive the fit yourself and inspect the state between cycles.

• FitController — hold the fit and advance it one step at a time, inspecting state in between.
• fit_with_observer — let it run, but get a callback after every cycle.

Both drive the same underlying runner and finish at the same result.

Structs

FitController

A running fit that you advance one cycle at a time.

Enums

CycleFlow

An observer’s verdict after a cycle: keep going, or stop.

Traits

FitObserver

A callback run after every cycle of a fit.