C++ unordered_set::end方法代码示例

float KernelKmeansClusterer::distanceToCluster(int sampleId,
		const boost::unordered_set<int>& clusterIdSet) {
	if (clusterIdSet.empty()) {
		return FLT_MAX;
	}
	// the sum of weight of the cluster
	float weightSum = 0.0f;
	// the sum of kernels from the sample to all samples in the cluster, multiplied by the weight
	float kernelSum = 0.0f;
	// the sum of kernels from each pair of samples in the cluster, multiplied by weights
	float kernelPairSum = 0.0f;
	for (boost::unordered_set<int>::const_iterator iter = clusterIdSet.begin();
			iter != clusterIdSet.end(); ++iter) {
		float weight = mWeightArray[*iter];
		weightSum += weight;
		float kernelResult = (*mpKernel)(sampleId, *iter);
		kernelSum += weight * kernelResult;
		for (boost::unordered_set<int>::const_iterator _iter =
				clusterIdSet.begin(); _iter != clusterIdSet.end(); ++_iter) {
			float _kernelResult = (*mpKernel)(*iter, *_iter);
			kernelPairSum += weight * mWeightArray[*_iter] * _kernelResult;
		}
	}
	float kernelSelf = (*mpKernel)(sampleId, sampleId);
	if (weightSum == 0.0f) {
		return FLT_MAX;
	}
	return kernelSelf - 2 * kernelSum / weightSum
			+ kernelPairSum / (weightSum * weightSum);
}

 inline Observer& Observer::operator=(const Observer& o) {
     iterator i;
     for (i=observables_.begin(); i!=observables_.end(); ++i)
         (*i)->unregisterObserver(this);
     observables_ = o.observables_;
     for (i=observables_.begin(); i!=observables_.end(); ++i)
         (*i)->registerObserver(this);
     return *this;
 }

    inline void ObservableSettings::registerDeferredObservers(boost::unordered_set<Observer*>& observers) {
        if (updatesDeferred())
	{
		QL_TRACE("adding " << observers.size() << " observers to the deferred list");
        	deferredObservers_.insert(observers.begin(), observers.end());
	}
    }

void VNode::collect_vnodes(boost::unordered_set<Node*>& nodes,uint& total)
{
	total++;
	boost::unordered_set<Node*>::iterator it = nodes.find(this);
	if(it==nodes.end())
		nodes.insert(this);
}

//calculates average of vectors
boost::unordered_map<string, double> Cluster::_centroid(boost::unordered_set<int>& cluster_list) {

  unordered_string_map centroid;

  int cluster_size = cluster_list.size();
  
  for (boost::unordered_set<int>::iterator it = cluster_list.begin(); it != cluster_list.end(); ++it) {

    //add each element of vector to centroid
    for (unordered_string_map::iterator ivec = doc_term_index[ *it ].begin(); ivec != doc_term_index[ *it ].end(); ++ivec) {
  
      //element (term) doesn't exist, we add it to the map
      if ( centroid.count ( ivec->first ) == 0) {
	//cout << "ivec second: " << ivec->second <<endl;
	//cout << "cluster_size: " << cluster_size <<endl;

	centroid.insert(unordered_string_map::value_type( ivec->first, double( (double)ivec->second / cluster_size ) ));
      }
      else {
	centroid[ivec->first] += double( ((double)ivec->second / cluster_size) );
      }

    }
  }    
  return centroid;
}

PNS_NODE::~PNS_NODE()
{
    TRACE( 0, "PNS_NODE::delete %p", this );

    if( !m_children.empty() )
    {
        TRACEn( 0, "attempting to free a node that has kids.\n" );
        assert( false );
    }

#ifdef DEBUG
    if( allocNodes.find( this ) == allocNodes.end() )
    {
        TRACEn( 0, "attempting to free an already-free'd node.\n" );
        assert( false );
    }

    allocNodes.erase( this );
#endif

    for( PNS_INDEX::ITEM_SET::iterator i = m_index->begin(); i != m_index->end(); ++i )
    {
        if( (*i)->BelongsTo( this ) )
            delete *i;
    }


    releaseGarbage();
    unlinkParent();

    delete m_index;
}

    inline void ObservableSettings::enableUpdates() {
    	updatesEnabled_  = true;
    	updatesDeferred_ = false;

    	// if there are outstanding deferred updates, do the notification
        if (deferredObservers_.size() > 0)
        {
            bool successful = true;
            std::string errMsg;

            QL_TRACE("deferred notification of " << deferredObservers_.size() << " observers");
            for (iterator i=deferredObservers_.begin(); i!=deferredObservers_.end(); ++i) {
                try {
                    (*i)->update();
                } catch (std::exception& e) {
                    successful = false;
                    errMsg = e.what();
                } catch (...) {
                    successful = false;
                }
            }

            deferredObservers_.clear();

            QL_ENSURE(successful,
                  "could not notify one or more observers: " << errMsg);
        }
    }

		static void serialize(storage_type& s, const boost::unordered_set<T>& o)
			{
			uint32_t sz = o.size();
			s.serialize(sz);

			for (auto it = o.begin(), it_end = o.end(); it != it_end; ++it)
				s.serialize(*it);
			}

void cluster_machine::dfs(const size_t curr, boost::unordered_set<size_t> &vis)
{
    vis.insert(curr);
    for (size_t e = first_[curr]; e != -1; e = next_[e]) {
        if ( vis.find(v_[e]) == vis.end() )
            dfs(v_[e], vis);
    }
}

 inline std::pair<boost::unordered_set<boost::shared_ptr<Observable> >::iterator, bool>
 Observer::registerWith(const boost::shared_ptr<Observable>& h) {
     if (h) {
         h->registerObserver(this);
         return observables_.insert(h);
     }
     return std::make_pair(observables_.end(), false);
 }

Strings get_live_object_names() {
  IMP::Vector<std::string> ret;
  for (boost::unordered_set<Object*>::const_iterator it = live_.begin();
       it != live_.end(); ++it) {
    ret.push_back((*it)->get_name());
  }
  return ret;
}

IMPKERNEL_END_NAMESPACE
IMPKERNEL_BEGIN_INTERNAL_NAMESPACE
void check_live_objects() {
  for (boost::unordered_set<Object*>::const_iterator it = live_.begin();
       it != live_.end(); ++it) {
    IMP_USAGE_CHECK((*it)->get_ref_count() > 0,
                    "Object " << (*it)->get_name() << " is not ref counted.");
  }
}

		void update(const key_type& inKey, const boost::unordered_set<value_type>& inValues)
			{
				{
				boost::unordered_set<value_type> curValues(getValues(inKey));
				for (auto it = curValues.begin(); it != curValues.end(); ++it)
					if (inValues.find(*it) == inValues.end())
						drop(inKey, *it);
				}

			insert(inKey, inValues);
			}

IMPKERNEL_END_NAMESPACE
IMPKERNEL_BEGIN_INTERNAL_NAMESPACE
void check_live_objects() {
  for (boost::unordered_set<Object*>::const_iterator it = live_.begin();
       it != live_.end(); ++it) {
    IMP_USAGE_CHECK((*it)->get_ref_count() > 0,
                    "Object " << (*it)->get_name()
                    << " is alive but not ref counted - memory leakage possible."
                    << " This usually happens if an owning pointer is released"
                    << " without being either deleted manually or assigned to"
                    << " another owning pointer.");
  }
}

void save(Archive & ar, const boost::unordered_set<T> & t, unsigned int version)
{
    // write the size
    // TODO: should we handle bucket size as well?
    typedef typename boost::unordered_set<T>::size_type size_type;
    typedef typename boost::unordered_set<T>::const_iterator const_iterator;
    size_type size = t.size();
    ar & BOOST_SERIALIZATION_NVP(size);
    unsigned int count = 0;
    for (const_iterator it = t.begin(); it != t.end(); it++) {
        ar & boost::serialization::make_nvp("item" + count, *it);
        count++;
    }
}