Tracker Video Analysis and Modeling Tool for Physics Education
True if we are computing a computation now, either first time or recompute. This matches Tracker.active unless we are inside Tracker.nonreactive, which nullfies currentComputation even though an enclosing computation may still be running. This value is useful for data source implementations to determine whether they are being accessed reactively or not. True if this computation has been invalidated , or if it has been stopped. Receives one argument, the computation that was stopped. Registers callback to run when this computation is stopped, or runs it immediately if the computation is already stopped. An Afrikaner veteran of the Boer War has just immigrated to New Zealand and is hired to track a man accused of killing a soldier. While hunting through the countryside he captures his fugitive, only to learn that he's innocent of the crime. When faced with the life-changing decision to turn him in or set him free only, one man will walk away alive. BitTorious is an open source, ...