LEMON/LEMON-official Changeset - r324:fafece417795

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Changeset - r324:fafece417795

« 323:bfed14

326:de38fc »

r324:fafece417795

Wed, 08 Oct 2008 13:25:57

[Not Reviewed]

0 comments (0 inline)

alpar (Alpar Juttner)
alpar@cs.elte.hu

Remove InverseMap and DescriptorMap

0 2 0

1.0

2 files changed with 8 insertions and 413 deletions:

lemon/maps.h

405

test/graph_utils_test.cc

↑ Collapse diff ↑

lemon/maps.h

Show inline comments

@@ -1754,597 +1754,192 @@
 		  /// For example it makes easier to store the nodes in the processing
 		  /// order of Dfs algorithm, as the following examples show.
 		  /// \code
 		  ///   std::vector<Node> v;
 		  ///   dfs(g,s).processedMap(loggerBoolMap(std::back_inserter(v))).run();
 		  /// \endcode
 		  /// \code
 		  ///   std::vector<Node> v(countNodes(g));
 		  ///   dfs(g,s).processedMap(loggerBoolMap(v.begin())).run();
 		  /// \endcode
 		  ///
 		  /// \note The container of the iterator must contain enough space
 		  /// for the elements or the iterator should be an inserter iterator.
 		  ///
 		  /// \note LoggerBoolMap is just \ref concepts::WriteMap "writable", so
 		  /// it cannot be used when a readable map is needed, for example as
 		  /// \c ReachedMap for \ref Bfs, \ref Dfs and \ref Dijkstra algorithms.
 		  ///
 		  /// \relates LoggerBoolMap
 		  template<typename Iterator>
 		  inline LoggerBoolMap<Iterator> loggerBoolMap(Iterator it) {
 		    return LoggerBoolMap<Iterator>(it);
+		  }
 		  /// Provides an immutable and unique id for each item in the graph.
 		  /// The IdMap class provides a unique and immutable id for each item of the
 		  /// same type (e.g. node) in the graph. This id is <ul><li>\b unique:
 		  /// different items (nodes) get different ids <li>\b immutable: the id of an
 		  /// item (node) does not change (even if you delete other nodes).  </ul>
 		  /// Through this map you get access (i.e. can read) the inner id values of
 		  /// the items stored in the graph. This map can be inverted with its member
 		  /// class \c InverseMap or with the \c operator() member.
 		  ///
 		  template <typename _Graph, typename _Item>
 		  class IdMap {
 		  public:
 		    typedef _Graph Graph;
 		    typedef int Value;
 		    typedef _Item Item;
 		    typedef _Item Key;
 		    /// \brief Constructor.
 		    ///
 		    /// Constructor of the map.
 		    explicit IdMap(const Graph& graph) : _graph(&graph) {}
 		    /// \brief Gives back the \e id of the item.
 		    ///
 		    /// Gives back the immutable and unique \e id of the item.
 		    int operator[](const Item& item) const { return _graph->id(item);}
 		    /// \brief Gives back the item by its id.
 		    ///
 		    /// Gives back the item by its id.
 		    Item operator()(int id) { return _graph->fromId(id, Item()); }
 		  private:
 		    const Graph* _graph;
 		  public:
 		    /// \brief The class represents the inverse of its owner (IdMap).
 		    ///
 		    /// The class represents the inverse of its owner (IdMap).
 		    /// \see inverse()
 		    class InverseMap {
 		    public:
 		      /// \brief Constructor.
 		      ///
 		      /// Constructor for creating an id-to-item map.
 		      explicit InverseMap(const Graph& graph) : _graph(&graph) {}
 		      /// \brief Constructor.
 		      ///
 		      /// Constructor for creating an id-to-item map.
 		      explicit InverseMap(const IdMap& map) : _graph(map._graph) {}
 		      /// \brief Gives back the given item from its id.
 		      ///
 		      /// Gives back the given item from its id.
 		      ///
 		      Item operator[](int id) const { return _graph->fromId(id, Item());}
 		    private:
 		      const Graph* _graph;
 		    };
 		    /// \brief Gives back the inverse of the map.
 		    ///
 		    /// Gives back the inverse of the IdMap.
 		    InverseMap inverse() const { return InverseMap(*_graph);}
 		  };
 		  /// \brief General invertable graph-map type.
 		  /// This type provides simple invertable graph-maps.
 		  /// The InvertableMap wraps an arbitrary ReadWriteMap
 		  /// and if a key is set to a new value then store it
 		  /// in the inverse map.
 		  ///
 		  /// The values of the map can be accessed
 		  /// with stl compatible forward iterator.
 		  ///
 		  /// \tparam _Graph The graph type.
 		  /// \tparam _Item The item type of the graph.
 		  /// \tparam _Value The value type of the map.
 		  ///
 		  /// \see IterableValueMap
 		  template <typename _Graph, typename _Item, typename _Value>
 		  class InvertableMap
 		    : protected ItemSetTraits<_Graph, _Item>::template Map<_Value>::Type {
 		  private:
 		    typedef typename ItemSetTraits<_Graph, _Item>::
 		    template Map<_Value>::Type Map;
 		    typedef _Graph Graph;
 		    typedef std::map<_Value, _Item> Container;
 		    Container _inv_map;
 		  public:
 		    /// The key type of InvertableMap (Node, Arc, Edge).
 		    typedef typename Map::Key Key;
 		    /// The value type of the InvertableMap.
 		    typedef typename Map::Value Value;
 		    /// \brief Constructor.
 		    ///
 		    /// Construct a new InvertableMap for the graph.
 		    ///
 		    explicit InvertableMap(const Graph& graph) : Map(graph) {}
 		    /// \brief Forward iterator for values.
 		    ///
 		    /// This iterator is an stl compatible forward
 		    /// iterator on the values of the map. The values can
 		    /// be accessed in the [beginValue, endValue) range.
 		    ///
 		    class ValueIterator
 		      : public std::iterator<std::forward_iterator_tag, Value> {
 		      friend class InvertableMap;
 		    private:
 		      ValueIterator(typename Container::const_iterator _it)
 		        : it(_it) {}
 		    public:
 		      ValueIterator() {}
 		      ValueIterator& operator++() { ++it; return *this; }
 		      ValueIterator operator++(int) {
 		        ValueIterator tmp(*this);
 		        operator++();
 		        return tmp;
+		      }
 		      const Value& operator*() const { return it->first; }
 		      const Value* operator->() const { return &(it->first); }
 		      bool operator==(ValueIterator jt) const { return it == jt.it; }
 		      bool operator!=(ValueIterator jt) const { return it != jt.it; }
 		    private:
 		      typename Container::const_iterator it;
 		    };
 		    /// \brief Returns an iterator to the first value.
 		    ///
 		    /// Returns an stl compatible iterator to the
 		    /// first value of the map. The values of the
 		    /// map can be accessed in the [beginValue, endValue)
 		    /// range.
 		    ValueIterator beginValue() const {
 		      return ValueIterator(_inv_map.begin());
+		    }
 		    /// \brief Returns an iterator after the last value.
 		    ///
 		    /// Returns an stl compatible iterator after the
 		    /// last value of the map. The values of the
 		    /// map can be accessed in the [beginValue, endValue)
 		    /// range.
 		    ValueIterator endValue() const {
 		      return ValueIterator(_inv_map.end());
+		    }
 		    /// \brief The setter function of the map.
 		    ///
 		    /// Sets the mapped value.
 		    void set(const Key& key, const Value& val) {
 		      Value oldval = Map::operator[](key);
 		      typename Container::iterator it = _inv_map.find(oldval);
 		      if (it != _inv_map.end() && it->second == key) {
 		        _inv_map.erase(it);
+		      }
 		      _inv_map.insert(make_pair(val, key));
 		      Map::set(key, val);
+		    }
 		    /// \brief The getter function of the map.
 		    ///
 		    /// It gives back the value associated with the key.
 		    typename MapTraits<Map>::ConstReturnValue
 		    operator[](const Key& key) const {
 		      return Map::operator[](key);
+		    }
 		    /// \brief Gives back the item by its value.
 		    ///
 		    /// Gives back the item by its value.
 		    Key operator()(const Value& key) const {
 		      typename Container::const_iterator it = _inv_map.find(key);
 		      return it != _inv_map.end() ? it->second : INVALID;
+		    }
 		  protected:
 		    /// \brief Erase the key from the map.
 		    ///
 		    /// Erase the key to the map. It is called by the
 		    /// \c AlterationNotifier.
 		    virtual void erase(const Key& key) {
 		      Value val = Map::operator[](key);
 		      typename Container::iterator it = _inv_map.find(val);
 		      if (it != _inv_map.end() && it->second == key) {
 		        _inv_map.erase(it);
+		      }
 		      Map::erase(key);
+		    }
 		    /// \brief Erase more keys from the map.
 		    ///
 		    /// Erase more keys from the map. It is called by the
 		    /// \c AlterationNotifier.
 		    virtual void erase(const std::vector<Key>& keys) {
 		      for (int i = 0; i < int(keys.size()); ++i) {
 		        Value val = Map::operator[](keys[i]);
 		        typename Container::iterator it = _inv_map.find(val);
 		        if (it != _inv_map.end() && it->second == keys[i]) {
 		          _inv_map.erase(it);
+		        }
+		      }
 		      Map::erase(keys);
+		    }
 		    /// \brief Clear the keys from the map and inverse map.
 		    ///
 		    /// Clear the keys from the map and inverse map. It is called by the
 		    /// \c AlterationNotifier.
 		    virtual void clear() {
 		      _inv_map.clear();
 		      Map::clear();
+		    }
 		  public:
 		    /// \brief The inverse map type.
 		    ///
 		    /// The inverse of this map. The subscript operator of the map
 		    /// gives back always the item what was last assigned to the value.
 		    class InverseMap {
 		    public:
 		      /// \brief Constructor of the InverseMap.
 		      ///
 		      /// Constructor of the InverseMap.
 		      explicit InverseMap(const InvertableMap& inverted)
 		        : _inverted(inverted) {}
 		      /// The value type of the InverseMap.
 		      typedef typename InvertableMap::Key Value;
 		      /// The key type of the InverseMap.
 		      typedef typename InvertableMap::Value Key;
 		      /// \brief Subscript operator.
 		      ///
 		      /// Subscript operator. It gives back always the item
 		      /// what was last assigned to the value.
 		      Value operator[](const Key& key) const {
 		        return _inverted(key);
+		      }
 		    private:
 		      const InvertableMap& _inverted;
 		    };
 		    /// \brief It gives back the just readable inverse map.
 		    ///
 		    /// It gives back the just readable inverse map.
 		    InverseMap inverse() const {
 		      return InverseMap(*this);
+		    }
 		  };
 		  /// \brief Provides a mutable, continuous and unique descriptor for each
 		  /// item in the graph.
 		  ///
 		  /// The DescriptorMap class provides a unique and continuous (but mutable)
 		  /// descriptor (id) for each item of the same type (e.g. node) in the
 		  /// graph. This id is <ul><li>\b unique: different items (nodes) get
 		  /// different ids <li>\b continuous: the range of the ids is the set of
 		  /// integers between 0 and \c n-1, where \c n is the number of the items of
 		  /// this type (e.g. nodes) (so the id of a node can change if you delete an
 		  /// other node, i.e. this id is mutable).  </ul> This map can be inverted
 		  /// with its member class \c InverseMap, or with the \c operator() member.
 		  ///
 		  /// \tparam _Graph The graph class the \c DescriptorMap belongs to.
 		  /// \tparam _Item The Item is the Key of the Map. It may be Node, Arc or
 		  /// Edge.
 		  template <typename _Graph, typename _Item>
 		  class DescriptorMap
 		    : protected ItemSetTraits<_Graph, _Item>::template Map<int>::Type {
 		    typedef _Item Item;
 		    typedef typename ItemSetTraits<_Graph, _Item>::template Map<int>::Type Map;
 		  public:
 		    /// The graph class of DescriptorMap.
 		    typedef _Graph Graph;
 		    /// The key type of DescriptorMap (Node, Arc, Edge).
 		    typedef typename Map::Key Key;
 		    /// The value type of DescriptorMap.
 		    typedef typename Map::Value Value;
 		    /// \brief Constructor.
 		    ///
 		    /// Constructor for descriptor map.
 		    explicit DescriptorMap(const Graph& _graph) : Map(_graph) {
 		      Item it;
 		      const typename Map::Notifier* nf = Map::notifier();
 		      for (nf->first(it); it != INVALID; nf->next(it)) {
 		        Map::set(it, _inv_map.size());
 		        _inv_map.push_back(it);
+		      }
+		    }
 		  protected:
 		    /// \brief Add a new key to the map.
 		    ///
 		    /// Add a new key to the map. It is called by the
 		    /// \c AlterationNotifier.
 		    virtual void add(const Item& item) {
 		      Map::add(item);
 		      Map::set(item, _inv_map.size());
 		      _inv_map.push_back(item);
+		    }
 		    /// \brief Add more new keys to the map.
 		    ///
 		    /// Add more new keys to the map. It is called by the
 		    /// \c AlterationNotifier.
 		    virtual void add(const std::vector<Item>& items) {
 		      Map::add(items);
 		      for (int i = 0; i < int(items.size()); ++i) {
 		        Map::set(items[i], _inv_map.size());
 		        _inv_map.push_back(items[i]);
+		      }
+		    }
 		    /// \brief Erase the key from the map.
 		    ///
 		    /// Erase the key from the map. It is called by the
 		    /// \c AlterationNotifier.
 		    virtual void erase(const Item& item) {
 		      Map::set(_inv_map.back(), Map::operator[](item));
 		      _inv_map[Map::operator[](item)] = _inv_map.back();
 		      _inv_map.pop_back();
 		      Map::erase(item);
+		    }
 		    /// \brief Erase more keys from the map.
 		    ///
 		    /// Erase more keys from the map. It is called by the
 		    /// \c AlterationNotifier.
 		    virtual void erase(const std::vector<Item>& items) {
 		      for (int i = 0; i < int(items.size()); ++i) {
 		        Map::set(_inv_map.back(), Map::operator[](items[i]));
 		        _inv_map[Map::operator[](items[i])] = _inv_map.back();
 		        _inv_map.pop_back();
+		      }
 		      Map::erase(items);
+		    }
 		    /// \brief Build the unique map.
 		    ///
 		    /// Build the unique map. It is called by the
 		    /// \c AlterationNotifier.
 		    virtual void build() {
 		      Map::build();
 		      Item it;
 		      const typename Map::Notifier* nf = Map::notifier();
 		      for (nf->first(it); it != INVALID; nf->next(it)) {
 		        Map::set(it, _inv_map.size());
 		        _inv_map.push_back(it);
+		      }
+		    }
 		    /// \brief Clear the keys from the map.
 		    ///
 		    /// Clear the keys from the map. It is called by the
 		    /// \c AlterationNotifier.
 		    virtual void clear() {
 		      _inv_map.clear();
 		      Map::clear();
+		    }
 		  public:
 		    /// \brief Returns the maximal value plus one.
 		    ///
 		    /// Returns the maximal value plus one in the map.
 		    unsigned int size() const {
 		      return _inv_map.size();
+		    }
 		    /// \brief Swaps the position of the two items in the map.
 		    ///
 		    /// Swaps the position of the two items in the map.
 		    void swap(const Item& p, const Item& q) {
 		      int pi = Map::operator[](p);
 		      int qi = Map::operator[](q);
 		      Map::set(p, qi);
 		      _inv_map[qi] = p;
 		      Map::set(q, pi);
 		      _inv_map[pi] = q;
+		    }
 		    /// \brief Gives back the \e descriptor of the item.
 		    ///
 		    /// Gives back the mutable and unique \e descriptor of the map.
 		    int operator[](const Item& item) const {
 		      return Map::operator[](item);
+		    }
 		    /// \brief Gives back the item by its descriptor.
 		    ///
 		    /// Gives back th item by its descriptor.
 		    Item operator()(int id) const {
 		      return _inv_map[id];
+		    }
 		  private:
 		    typedef std::vector<Item> Container;
 		    Container _inv_map;
 		  public:
 		    /// \brief The inverse map type of DescriptorMap.
 		    ///
 		    /// The inverse map type of DescriptorMap.
 		    class InverseMap {
 		    public:
 		      /// \brief Constructor of the InverseMap.
 		      ///
 		      /// Constructor of the InverseMap.
 		      explicit InverseMap(const DescriptorMap& inverted)
 		        : _inverted(inverted) {}
 		      /// The value type of the InverseMap.
 		      typedef typename DescriptorMap::Key Value;
 		      /// The key type of the InverseMap.
 		      typedef typename DescriptorMap::Value Key;
 		      /// \brief Subscript operator.
 		      ///
 		      /// Subscript operator. It gives back the item
 		      /// that the descriptor belongs to currently.
 		      Value operator[](const Key& key) const {
 		        return _inverted(key);
+		      }
 		      /// \brief Size of the map.
 		      ///
 		      /// Returns the size of the map.
 		      unsigned int size() const {
 		        return _inverted.size();
+		      }
 		    private:
 		      const DescriptorMap& _inverted;
 		    };
 		    /// \brief Gives back the inverse of the map.
 		    ///
 		    /// Gives back the inverse of the map.
 		    const InverseMap inverse() const {
 		      return InverseMap(*this);
+		    }
 		  };
 		  /// \brief Returns the source of the given arc.
 		  ///
 		  /// The SourceMap gives back the source Node of the given arc.
 		  /// \see TargetMap
 		  template <typename Digraph>
 		  class SourceMap {
 		  public:
 		    typedef typename Digraph::Node Value;
 		    typedef typename Digraph::Arc Key;
 		    /// \brief Constructor
 		    ///
 		    /// Constructor
 		    /// \param _digraph The digraph that the map belongs to.
 		    explicit SourceMap(const Digraph& digraph) : _digraph(digraph) {}
 		    /// \brief The subscript operator.
 		    ///
 		    /// The subscript operator.
 		    /// \param arc The arc
 		    /// \return The source of the arc
 		    Value operator[](const Key& arc) const {
 		      return _digraph.source(arc);
+		    }
 		  private:
 		    const Digraph& _digraph;
 		  };
 		  /// \brief Returns a \ref SourceMap class.
 		  ///
 		  /// This function just returns an \ref SourceMap class.
 		  /// \relates SourceMap
 		  template <typename Digraph>
 		  inline SourceMap<Digraph> sourceMap(const Digraph& digraph) {
 		    return SourceMap<Digraph>(digraph);
+		  }
 		  /// \brief Returns the target of the given arc.
 		  ///
 		  /// The TargetMap gives back the target Node of the given arc.
 		  /// \see SourceMap
 		  template <typename Digraph>
 		  class TargetMap {
 		  public:
 		    typedef typename Digraph::Node Value;
 		    typedef typename Digraph::Arc Key;
 		    /// \brief Constructor
 		    ///
 		    /// Constructor
 		    /// \param _digraph The digraph that the map belongs to.
 		    explicit TargetMap(const Digraph& digraph) : _digraph(digraph) {}
 		    /// \brief The subscript operator.
 		    ///
 		    /// The subscript operator.
 		    /// \param e The arc
 		    /// \return The target of the arc
 		    Value operator[](const Key& e) const {
 		      return _digraph.target(e);
+		    }
 		  private:
 		    const Digraph& _digraph;
 		  };
 		  /// \brief Returns a \ref TargetMap class.
 		  ///
 		  /// This function just returns a \ref TargetMap class.
 		  /// \relates TargetMap
 		  template <typename Digraph>
 		  inline TargetMap<Digraph> targetMap(const Digraph& digraph) {
 		    return TargetMap<Digraph>(digraph);
+		  }
 		  /// \brief Returns the "forward" directed arc view of an edge.
 		  ///
 		  /// Returns the "forward" directed arc view of an edge.
 		  /// \see BackwardMap
 		  template <typename Graph>
 		  class ForwardMap {
 		  public:
 		    typedef typename Graph::Arc Value;
 		    typedef typename Graph::Edge Key;
 		    /// \brief Constructor
 		    ///
 		    /// Constructor
 		    /// \param _graph The graph that the map belongs to.
 		    explicit ForwardMap(const Graph& graph) : _graph(graph) {}
 		    /// \brief The subscript operator.

test/graph_utils_test.cc

Show inline comments

 		/* -*- mode: C++; indent-tabs-mode: nil; -*-
+		 *
 		 * This file is a part of LEMON, a generic C++ optimization library.
+		 *
 		 * Copyright (C) 2003-2008
 		 * Egervary Jeno Kombinatorikus Optimalizalasi Kutatocsoport
 		 * (Egervary Research Group on Combinatorial Optimization, EGRES).
+		 *
 		 * Permission to use, modify and distribute this software is granted
 		 * provided that this copyright notice appears in all copies. For
 		 * precise terms see the accompanying LICENSE file.
+		 *
 		 * This software is provided "AS IS" with no warranty of any kind,
 		 * express or implied, and with no claim as to its suitability for any
 		 * purpose.
+		 *
 		 */
 		#include <cstdlib>
 		#include <ctime>
 		#include <lemon/random.h>
 		#include <lemon/list_graph.h>
 		#include <lemon/smart_graph.h>
 		#include <lemon/maps.h>
 		#include "graph_test.h"
 		#include "test_tools.h"
 		using namespace lemon;
 		template <typename Digraph>
 		void checkFindArcs() {
 		  TEMPLATE_DIGRAPH_TYPEDEFS(Digraph);
+		  {
 		    Digraph digraph;
 		    typename Digraph::template NodeMap<int> nodes(digraph);
 		    std::vector<Node> invNodes;
 		    for (int i = 0; i < 10; ++i) {
 		      digraph.addNode();
+		      invNodes.push_back(digraph.addNode());
 		      nodes[invNodes.back()]=invNodes.size()-1;
+		    }
 		    DescriptorMap<Digraph, Node> nodes(digraph);
 		    typename DescriptorMap<Digraph, Node>::InverseMap invNodes(nodes);
 		    for (int i = 0; i < 100; ++i) {
 		      int src = rnd[invNodes.size()];
 		      int trg = rnd[invNodes.size()];
 		      digraph.addArc(invNodes[src], invNodes[trg]);
+		    }
 		    typename Digraph::template ArcMap<bool> found(digraph, false);
 		    DescriptorMap<Digraph, Arc> arcs(digraph);
 		    for (NodeIt src(digraph); src != INVALID; ++src) {
 		      for (NodeIt trg(digraph); trg != INVALID; ++trg) {
 		        for (ConArcIt<Digraph> con(digraph, src, trg); con != INVALID; ++con) {
 		          check(digraph.source(con) == src, "Wrong source.");
 		          check(digraph.target(con) == trg, "Wrong target.");
 		          check(found[con] == false, "The arc found already.");
 		          found[con] = true;
+		        }
+		      }
+		    }
 		    for (ArcIt it(digraph); it != INVALID; ++it) {
 		      check(found[it] == true, "The arc is not found.");
+		    }
+		  }
+		  {
 		    int num = 5;
 		    Digraph fg;
 		    std::vector<Node> nodes;
 		    for (int i = 0; i < num; ++i) {
 		      nodes.push_back(fg.addNode());
+		    }
 		    for (int i = 0; i < num * num; ++i) {
 		      fg.addArc(nodes[i / num], nodes[i % num]);
+		    }
 		    check(countNodes(fg) == num, "Wrong node number.");
 		    check(countArcs(fg) == num*num, "Wrong arc number.");
 		    for (NodeIt src(fg); src != INVALID; ++src) {
 		      for (NodeIt trg(fg); trg != INVALID; ++trg) {
 		        ConArcIt<Digraph> con(fg, src, trg);
 		        check(con != INVALID, "There is no connecting arc.");
 		        check(fg.source(con) == src, "Wrong source.");
 		        check(fg.target(con) == trg, "Wrong target.");
 		        check(++con == INVALID, "There is more connecting arc.");
+		      }
+		    }
 		    ArcLookUp<Digraph> al1(fg);
 		    DynArcLookUp<Digraph> al2(fg);
 		    AllArcLookUp<Digraph> al3(fg);
 		    for (NodeIt src(fg); src != INVALID; ++src) {
 		      for (NodeIt trg(fg); trg != INVALID; ++trg) {
 		        Arc con1 = al1(src, trg);
 		        Arc con2 = al2(src, trg);
 		        Arc con3 = al3(src, trg);
 		        Arc con4 = findArc(fg, src, trg);
 		        check(con1 == con2 && con2 == con3 && con3 == con4,
 		              "Different results.")
 		        check(con1 != INVALID, "There is no connecting arc.");
 		        check(fg.source(con1) == src, "Wrong source.");
 		        check(fg.target(con1) == trg, "Wrong target.");
 		        check(al3(src, trg, con3) == INVALID,
 		              "There is more connecting arc.");
 		        check(findArc(fg, src, trg, con4) == INVALID,
 		              "There is more connecting arc.");
+		      }
+		    }
+		  }
+		}
 		template <typename Graph>
 		void checkFindEdges() {
 		  TEMPLATE_GRAPH_TYPEDEFS(Graph);
 		  Graph graph;
 		  typename Graph::template NodeMap<int> nodes(graph);
 		  std::vector<Node> invNodes;
 		  for (int i = 0; i < 10; ++i) {
 		    graph.addNode();
+		    invNodes.push_back(graph.addNode());
 		    nodes[invNodes.back()]=invNodes.size()-1;
+		  }
 		  DescriptorMap<Graph, Node> nodes(graph);
 		  typename DescriptorMap<Graph, Node>::InverseMap invNodes(nodes);
 		  for (int i = 0; i < 100; ++i) {
 		    int src = rnd[invNodes.size()];
 		    int trg = rnd[invNodes.size()];
 		    graph.addEdge(invNodes[src], invNodes[trg]);
+		  }
 		  typename Graph::template EdgeMap<int> found(graph, 0);
 		  DescriptorMap<Graph, Edge> edges(graph);
 		  for (NodeIt src(graph); src != INVALID; ++src) {
 		    for (NodeIt trg(graph); trg != INVALID; ++trg) {
 		      for (ConEdgeIt<Graph> con(graph, src, trg); con != INVALID; ++con) {
 		        check( (graph.u(con) == src && graph.v(con) == trg) ||
 		               (graph.v(con) == src && graph.u(con) == trg),
 		               "Wrong end nodes.");
 		        ++found[con];
 		        check(found[con] <= 2, "The edge found more than twice.");
+		      }
+		    }
+		  }
 		  for (EdgeIt it(graph); it != INVALID; ++it) {
 		    check( (graph.u(it) != graph.v(it) && found[it] == 2) ||
 		           (graph.u(it) == graph.v(it) && found[it] == 1),
 		           "The edge is not found correctly.");
+		  }
+		}
 		template <class Digraph>
 		void checkDeg()
+		{
 		  TEMPLATE_DIGRAPH_TYPEDEFS(Digraph);
 		  const int nodeNum = 10;
 		  const int arcNum = 100;
 		  Digraph digraph;
 		  InDegMap<Digraph> inDeg(digraph);
 		  OutDegMap<Digraph> outDeg(digraph);
 		  std::vector<Node> nodes(nodeNum);
 		  for (int i = 0; i < nodeNum; ++i) {
 		    nodes[i] = digraph.addNode();
+		  }
 		  std::vector<Arc> arcs(arcNum);
 		  for (int i = 0; i < arcNum; ++i) {
 		    arcs[i] = digraph.addArc(nodes[rnd[nodeNum]], nodes[rnd[nodeNum]]);
+		  }
 		  for (int i = 0; i < nodeNum; ++i) {
 		    check(inDeg[nodes[i]] == countInArcs(digraph, nodes[i]),
 		          "Wrong in degree map");
+		  }
 		  for (int i = 0; i < nodeNum; ++i) {
 		    check(outDeg[nodes[i]] == countOutArcs(digraph, nodes[i]),
 		          "Wrong out degree map");
+		  }
+		}
 		template <class Digraph>
 		void checkSnapDeg()
+		{
 		  TEMPLATE_DIGRAPH_TYPEDEFS(Digraph);
 		  Digraph g;
 		  Node n1=g.addNode();
 		  Node n2=g.addNode();
 		  InDegMap<Digraph> ind(g);
 		  g.addArc(n1,n2);
 		  typename Digraph::Snapshot snap(g);
 		  OutDegMap<Digraph> outd(g);
 		  check(ind[n1]==0 && ind[n2]==1, "Wrong InDegMap value.");
 		  check(outd[n1]==1 && outd[n2]==0, "Wrong OutDegMap value.");
 		  g.addArc(n1,n2);
 		  g.addArc(n2,n1);
 		  check(ind[n1]==1 && ind[n2]==2, "Wrong InDegMap value.");
 		  check(outd[n1]==2 && outd[n2]==1, "Wrong OutDegMap value.");
 		  snap.restore();
 		  check(ind[n1]==0 && ind[n2]==1, "Wrong InDegMap value.");
 		  check(outd[n1]==1 && outd[n2]==0, "Wrong OutDegMap value.");
+		}
 		int main() {
 		  // Checking ConArcIt, ConEdgeIt, ArcLookUp, AllArcLookUp, and DynArcLookUp
 		  checkFindArcs<ListDigraph>();
 		  checkFindArcs<SmartDigraph>();
 		  checkFindEdges<ListGraph>();
 		  checkFindEdges<SmartGraph>();
 		  // Checking In/OutDegMap (and Snapshot feature)
 		  checkDeg<ListDigraph>();
 		  checkDeg<SmartDigraph>();
 		  checkSnapDeg<ListDigraph>();
 		  checkSnapDeg<SmartDigraph>();
 		  return 0;
+		}

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