MatchCompare.h

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/*
  Copyright (C) 2002-2017 CERN for the benefit of the ATLAS collaboration
*/
 
#ifndef MATCHCOMPARE_H
#define MATCHCOMPARE_H
 
namespace Trk {
 
  template<class TruthCollection> 
  struct MatchCompareByProbability {
    bool operator()(typename TruthCollection::const_iterator, typename TruthCollection::const_iterator) const;
  };
 
 
  //================================================================
  // Implementation
  template<class TruthCollection> 
  bool MatchCompareByProbability<TruthCollection>::
  operator()(typename TruthCollection::const_iterator a, typename TruthCollection::const_iterator b) const {
    return 
      (a->second.probability() < b->second.probability() ) || 
      ((a->second.probability() == b->second.probability() ) 
       /* prefer smaller (extended) barcodes --- bias to pick primary events & tracks */
       && (b->second.particleLink() < a->second.particleLink() ));
  }
 
}
 
#endif/*MATCHCOMPARE_H*/