DerailerElementAndPosition

A pair (derailer element, position). The derailer element is the movable part of a derailer and no model class strictly speaking. Used for expressing concepts like: the derailer has to be in the non-derailing position.

DerailerElementAndPosition

A pair (derailer element, position). The derailer element is the movable part of a derailer and no model class strictly speaking. Used for expressing concepts like: the derailer has to be in the non-derailing position.