AbsArrayProjector.hh
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AbsArrayProjector.hh
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	#ifndef NPSTAT_ABSARRAYPROJECTOR_HH_
	#define NPSTAT_ABSARRAYPROJECTOR_HH_

	/*!
	// \file AbsArrayProjector.hh
	//
	// \brief Interface definition for functors used to make array projections
	//
	// Author: I. Volobouev
	//
	// March 2010
	*/

	namespace npstat {
	/**
	// Interface class for piecemeal processing of array data and coordinates.
	// Intended for making multidimensional array projections.
	*/
	template <typename Input, typename Result>
	struct AbsArrayProjector
	{
	virtual ~AbsArrayProjector() {}

	/** Clear all accumulated results */
	virtual void clear() = 0;

	/** Process one array point */
	virtual void process(const unsigned *index, unsigned indexLen,
	unsigned long linearIndex,
	const Input& value) = 0;

	/** Return the result at the end of array processing */
	virtual Result result() = 0;
	};
	}

	#endif // ABSARRAYPROJECTOR_HH_