Replace ConstantPropertyMap by UnityPropertyMap whenever appropriate

src/graph/centrality/graph_eigenvector.cc

@@ -33,12 +33,12 @@ long double eigenvector(GraphInterface& g, boost::any w, boost::any c,
         throw ValueException("vertex property must be of floating point"
                              " value type");
 
-    typedef ConstantPropertyMap<int, GraphInterface::edge_t> weight_map_t;
+    typedef UnityPropertyMap<int,GraphInterface::edge_t> weight_map_t;
     typedef boost::mpl::push_back<writable_edge_scalar_properties, weight_map_t>::type
         weight_props_t;
 
     if(w.empty())
-        w = weight_map_t(1);
+        w = weight_map_t();
 
     long double eig = 0;
     run_action<>()

src/graph/centrality/graph_hits.cc

@@ -59,12 +59,12 @@ long double hits(GraphInterface& g, boost::any w, boost::any x, boost::any y,
         throw ValueException("vertex property must be of floating point"
                              " value type");
 
-    typedef ConstantPropertyMap<int, GraphInterface::edge_t> weight_map_t;
+    typedef UnityPropertyMap<int,GraphInterface::edge_t> weight_map_t;
     typedef boost::mpl::push_back<writable_edge_scalar_properties, weight_map_t>::type
         weight_props_t;
 
     if(w.empty())
-        w = weight_map_t(1);
+        w = weight_map_t();
 
     long double eig = 0;
     run_action<>()

src/graph/centrality/graph_katz.cc

@@ -39,19 +39,19 @@ void katz(GraphInterface& g, boost::any w, boost::any c, boost::any beta,
         throw ValueException("personalization vertex property must be of floating point"
                              " value type");
 
-    typedef ConstantPropertyMap<double, GraphInterface::edge_t> weight_map_t;
+    typedef UnityPropertyMap<int,GraphInterface::edge_t> weight_map_t;
     typedef boost::mpl::push_back<writable_edge_scalar_properties, weight_map_t>::type
         weight_props_t;
 
     if(w.empty())
-        w = weight_map_t(1.);
+        w = weight_map_t();
 
-    typedef ConstantPropertyMap<double, GraphInterface::vertex_t> beta_map_t;
+    typedef UnityPropertyMap<int,GraphInterface::vertex_t> beta_map_t;
     typedef boost::mpl::push_back<vertex_floating_properties, beta_map_t>::type
         beta_props_t;
 
     if(beta.empty())
-        beta = beta_map_t(1.);
+        beta = beta_map_t();
 
     run_action<>()(g, std::bind(get_katz(), std::placeholders::_1, g.get_vertex_index(),
                                 std::placeholders::_2, std::placeholders::_3,

src/graph/centrality/graph_pagerank.cc

@@ -44,7 +44,7 @@ size_t pagerank(GraphInterface& g, boost::any rank, boost::any pers,
     if(pers.empty())
         pers = pers_map_t(1.0 / g.get_num_vertices());
 
-    typedef ConstantPropertyMap<double, GraphInterface::edge_t> weight_map_t;
+    typedef UnityPropertyMap<int,GraphInterface::edge_t> weight_map_t;
     typedef boost::mpl::push_back<edge_scalar_properties, weight_map_t>::type
         weight_props_t;
 
@@ -52,7 +52,7 @@ size_t pagerank(GraphInterface& g, boost::any rank, boost::any pers,
         throw ValueException("weight edge property must have a scalar value type");
 
     if(weight.empty())
-        weight = weight_map_t(1.0);
+        weight = weight_map_t();
 
     size_t iter;
     run_action<>()

src/graph/community/graph_community.cc

@@ -79,12 +79,12 @@ double modularity(GraphInterface& g, boost::any weight, boost::any property)
 {
     double modularity = 0;
 
-    typedef ConstantPropertyMap<int32_t,GraphInterface::edge_t> weight_map_t;
+    typedef UnityPropertyMap<int,GraphInterface::edge_t> weight_map_t;
     typedef boost::mpl::push_back<edge_scalar_properties, weight_map_t>::type
         edge_props_t;
 
     if(weight.empty())
-        weight = weight_map_t(1);
+        weight = weight_map_t();
 
     run_action<graph_tool::detail::never_directed>()
         (g, std::bind(get_modularity(), std::placeholders::_1, std::placeholders::_2,

src/graph/community/graph_community_network.cc

@@ -33,8 +33,8 @@ using namespace boost;
 
 using namespace graph_tool;
 
-typedef ConstantPropertyMap<int32_t,GraphInterface::edge_t> no_eweight_map_t;
-typedef ConstantPropertyMap<int32_t,GraphInterface::vertex_t> no_vweight_map_t;
+typedef UnityPropertyMap<int,GraphInterface::edge_t> no_eweight_map_t;
+typedef UnityPropertyMap<int,GraphInterface::vertex_t> no_vweight_map_t;
 typedef property_map_type::apply<int32_t,GraphInterface::edge_index_map_t>::type::unchecked_t ecount_map_t;
 typedef property_map_type::apply<int32_t,GraphInterface::vertex_index_map_t>::type::unchecked_t vcount_map_t;
 
@@ -97,7 +97,7 @@ void community_network(GraphInterface& gi, GraphInterface& cgi,
         vweight_properties;
 
     if (vweight.empty())
-        vweight = no_vweight_map_t(1);
+        vweight = no_vweight_map_t();
 
     run_action<>()
         (gi, std::bind(get_community_network_vertices_dispatch(),

src/graph/community/graph_community_network_eavg.cc

@@ -33,7 +33,7 @@ using namespace boost;
 
 using namespace graph_tool;
 
-typedef ConstantPropertyMap<int32_t,GraphInterface::edge_t> no_eweight_map_t;
+typedef UnityPropertyMap<int,GraphInterface::edge_t> no_eweight_map_t;
 typedef property_map_type::apply<int32_t,GraphInterface::edge_index_map_t>::type ecount_map_t;
 
 struct get_weighted_edge_property_dispatch
@@ -68,7 +68,7 @@ void community_network_eavg(GraphInterface& gi, GraphInterface& cgi,
     if (eweight.empty())
     {
         no_weight = true;
-        eweight = no_eweight_map_t(1);
+        eweight = no_eweight_map_t();
     }
 
     typedef boost::mpl::insert_range<writable_edge_scalar_properties,

src/graph/community/graph_community_network_eavg_imp1.cc

@@ -33,7 +33,7 @@ using namespace boost;
 
 using namespace graph_tool;
 
-typedef ConstantPropertyMap<int32_t,GraphInterface::edge_t> no_eweight_map_t;
+typedef UnityPropertyMap<int,GraphInterface::edge_t> no_eweight_map_t;
 typedef property_map_type::apply<int32_t,GraphInterface::edge_index_map_t>::type ecount_map_t;
 
 struct get_edge_sum_dispatch

src/graph/community/graph_community_network_edges.cc

@@ -33,7 +33,7 @@ using namespace boost;
 
 using namespace graph_tool;
 
-typedef ConstantPropertyMap<int32_t,GraphInterface::edge_t> no_eweight_map_t;
+typedef UnityPropertyMap<int,GraphInterface::edge_t> no_eweight_map_t;
 typedef property_map_type::apply<int32_t,GraphInterface::edge_index_map_t>::type::unchecked_t ecount_map_t;
 
 struct get_community_network_edges_dispatch
@@ -72,7 +72,7 @@ void community_network_edges(GraphInterface& gi, GraphInterface& cgi,
         eweight_properties;
 
     if (eweight.empty())
-        eweight = no_eweight_map_t(1);
+        eweight = no_eweight_map_t();
 
     run_action<>()
         (gi, std::bind(get_community_network_edges_dispatch(self_loops, parallel_edges),

src/graph/community/graph_community_network_vavg.cc

@@ -33,7 +33,7 @@ using namespace boost;
 
 using namespace graph_tool;
 
-typedef ConstantPropertyMap<int32_t,GraphInterface::vertex_t> no_vweight_map_t;
+typedef UnityPropertyMap<int,GraphInterface::vertex_t> no_vweight_map_t;
 typedef property_map_type::apply<int32_t,GraphInterface::vertex_index_map_t>::type vcount_map_t;
 
 
@@ -77,7 +77,7 @@ void community_network_vavg(GraphInterface& gi, GraphInterface& cgi,
     if (vweight.empty())
     {
         no_weight = true;
-        vweight = no_vweight_map_t(1);
+        vweight = no_vweight_map_t();
     }
 
     typedef boost::mpl::insert_range<writable_vertex_scalar_properties,

src/graph/correlations/graph_avg_correlations.cc

@@ -40,7 +40,7 @@ void graph_avg_corr_imp1(GraphInterface& g, boost::python::object& avg,
                          const vector<long double>& bins);
 
 
-typedef ConstantPropertyMap<int,GraphInterface::edge_t> cweight_map_t;
+typedef UnityPropertyMap<int,GraphInterface::edge_t> cweight_map_t;
 
 boost::python::object
 get_vertex_avg_correlation(GraphInterface& gi,
@@ -61,7 +61,7 @@ get_vertex_avg_correlation(GraphInterface& gi,
         weight_prop = wrapped_weight_t(weight, edge_scalar_properties());
     }
     else
-        weight_prop = cweight_map_t(1);
+        weight_prop = cweight_map_t();
 
     try
     {

src/graph/correlations/graph_avg_correlations_combined.cc

@@ -31,7 +31,7 @@ using namespace std;
 using namespace boost;
 using namespace graph_tool;
 
-typedef ConstantPropertyMap<int,GraphInterface::edge_t> dummy_weight;
+typedef UnityPropertyMap<int,GraphInterface::edge_t> dummy_weight;
 
 boost::python::object
 get_vertex_avg_combined_correlation(GraphInterface& gi,

src/graph/correlations/graph_correlations.cc

@@ -41,7 +41,7 @@ void graph_correlations_imp1(GraphInterface& g, boost::python::object& hist,
                              const std::array<vector<long double>,2>& bins);
 
 
-typedef ConstantPropertyMap<int,GraphInterface::edge_t> cweight_map_t;
+typedef UnityPropertyMap<int,GraphInterface::edge_t> cweight_map_t;
 
 boost::python::object
 get_vertex_correlation_histogram(GraphInterface& gi,
@@ -67,7 +67,7 @@ get_vertex_correlation_histogram(GraphInterface& gi,
         weight_prop = wrapped_weight_t(weight, edge_scalar_properties());
     }
     else
-        weight_prop = cweight_map_t(1);
+        weight_prop = cweight_map_t();
 
     try
     {

src/graph/correlations/graph_correlations_combined.cc

@@ -30,7 +30,7 @@ using namespace std;
 using namespace boost;
 using namespace graph_tool;
 
-typedef ConstantPropertyMap<int,GraphInterface::edge_t> dummy_weight;
+typedef UnityPropertyMap<int,GraphInterface::edge_t> dummy_weight;
 
 boost::python::object
 get_vertex_combined_correlation_histogram(GraphInterface& gi,

src/graph/flow/graph_minimum_cut.cc

@@ -47,10 +47,10 @@ double min_cut(GraphInterface& gi, boost::any weight, boost::any part_map)
 {
     double mc = 0;
 
-    typedef ConstantPropertyMap<size_t,GraphInterface::edge_t> cweight_t;
+    typedef UnityPropertyMap<size_t,GraphInterface::edge_t> cweight_t;
 
     if (weight.empty())
-        weight = cweight_t(1);
+        weight = cweight_t();
 
     typedef boost::mpl::push_back<writable_edge_scalar_properties, cweight_t>::type
         weight_maps;

src/graph/graph.hh

@@ -137,7 +137,7 @@ public:
 
     typedef boost::property_map<multigraph_t, boost::vertex_index_t>::type vertex_index_map_t;
     typedef boost::property_map<multigraph_t, boost::edge_index_t>::type edge_index_map_t;
-    typedef ConstantPropertyMap<size_t, boost::graph_property_tag> graph_index_map_t;
+    typedef ConstantPropertyMap<size_t,boost::graph_property_tag> graph_index_map_t;
 
     // internal access
 

src/graph/graph_properties.hh

@@ -617,18 +617,18 @@ public:
 };
 
 // the following is a property map which always returns one
-template <class Key>
+template <class Value, class Key>
 class UnityPropertyMap
-    : public boost::put_get_helper<int, UnityPropertyMap<Key>>
+    : public boost::put_get_helper<Value, UnityPropertyMap<Value, Key>>
 {
 public:
-    typedef int value_type;
+    typedef Value value_type;
     typedef value_type reference;
     typedef Key key_type;
     typedef boost::readable_property_map_tag category;
 
     template <class K>
-    value_type operator[](const K&) const { return 1; }
+    value_type operator[](const K&) const { return value_type(1); }
 };
 
 
@@ -639,7 +639,7 @@ struct is_constant_property
     typedef typename boost::property_traits<Property>::value_type value_type;
     typedef typename std::conditional<std::is_same<Property, ConstantPropertyMap<value_type, key_type>>::value,
                                       std::true_type,
-                                      typename std::is_same<Property, UnityPropertyMap<key_type>>::type>::type type;
+                                      typename std::is_same<Property, UnityPropertyMap<value_type, key_type>>::type>::type type;
 };
 
 

src/graph/graph_selectors.hh

@@ -105,9 +105,9 @@ struct in_degreeS
         return in_degree(v, g) * weight.c;
     }
 
-    template <class Graph, class Vertex, class Key>
+    template <class Graph, class Vertex, class Key, class Value>
     auto get_in_degree(Vertex v, const Graph& g, std::true_type,
-                       const UnityPropertyMap<Key>&) const
+                       const UnityPropertyMap<Value, Key>&) const
     {
         return in_degree(v, g);
     }
@@ -159,9 +159,9 @@ struct out_degreeS
         return out_degree(v, g) * weight.c;
     }
 
-    template <class Graph, class Vertex, class Key>
+    template <class Graph, class Vertex, class Key, class Value>
     auto get_out_degree(Vertex v, const Graph& g,
-                        const UnityPropertyMap<Key>&) const
+                        const UnityPropertyMap<Value, Key>&) const
     {
         return out_degree(v, g);
     }

src/graph/layout/graph_arf.cc

@@ -31,12 +31,12 @@ void arf_layout(GraphInterface& g, boost::any pos, boost::any weight, double d,
                 double a, double dt, size_t max_iter, double epsilon,
                 size_t dim)
 {
-    typedef ConstantPropertyMap<int32_t,GraphInterface::edge_t> weight_map_t;
+    typedef UnityPropertyMap<int,GraphInterface::edge_t> weight_map_t;
     typedef boost::mpl::push_back<edge_scalar_properties, weight_map_t>::type
         edge_props_t;
 
     if(weight.empty())
-        weight = weight_map_t(1);
+        weight = weight_map_t();
     run_action<graph_tool::detail::never_directed>()
         (g, std::bind(get_arf_layout(), std::placeholders::_1, std::placeholders::_2,
                       std::placeholders::_3, a, d, dt, epsilon, max_iter, dim),

src/graph/layout/graph_fruchterman_reingold.cc

@@ -155,8 +155,6 @@ struct get_layout
                  cooling(cool).
                  force_pairs(all_force_pairs()));
     }
-
-
 };
 
 
@@ -165,12 +163,12 @@ void fruchterman_reingold_layout(GraphInterface& g, boost::any pos,
                                  bool square, double scale, bool grid,
                                  double ti, double tf, size_t max_iter)
 {
-    typedef ConstantPropertyMap<double,GraphInterface::edge_t> weight_map_t;
+    typedef UnityPropertyMap<int,GraphInterface::edge_t> weight_map_t;
     typedef boost::mpl::push_back<edge_scalar_properties, weight_map_t>::type
         edge_props_t;
 
     if(weight.empty())
-        weight = weight_map_t(1.0);
+        weight = weight_map_t();
     if (square)
         run_action<graph_tool::detail::never_directed>()
             (g,

src/graph/layout/graph_sfdp.cc

@@ -36,8 +36,8 @@ void sfdp_layout(GraphInterface& g, boost::any pos, boost::any vweight,
                  size_t max_level, double epsilon, size_t max_iter,
                  bool adaptive, bool verbose, rng_t& rng)
 {
-    typedef ConstantPropertyMap<int32_t,GraphInterface::vertex_t> vweight_map_t;
-    typedef ConstantPropertyMap<int32_t,GraphInterface::edge_t> eweight_map_t;
+    typedef UnityPropertyMap<int,GraphInterface::vertex_t> vweight_map_t;
+    typedef UnityPropertyMap<int,GraphInterface::edge_t> eweight_map_t;
     typedef mpl::push_back<vertex_scalar_properties, vweight_map_t>::type
         vertex_props_t;
     typedef mpl::push_back<edge_scalar_properties, eweight_map_t>::type
@@ -57,9 +57,9 @@ void sfdp_layout(GraphInterface& g, boost::any pos, boost::any vweight,
         any_cast<group_map_t>(python::extract<any>(spring_parms[6]));
 
     if(vweight.empty())
-        vweight = vweight_map_t(1);
+        vweight = vweight_map_t();
     if(eweight.empty())
-        eweight = eweight_map_t(1);
+        eweight = eweight_map_t();
 
     typedef property_map_type::apply<uint8_t,
                                      GraphInterface::vertex_index_map_t>::type

src/graph/spectral/graph_adjacency.cc

@@ -37,7 +37,7 @@ void adjacency(GraphInterface& g, boost::any index, boost::any weight,
     if (!belongs<vertex_scalar_properties>()(index))
         throw ValueException("index vertex property must have a scalar value type");
 
-    typedef ConstantPropertyMap<double, GraphInterface::edge_t> weight_map_t;
+    typedef UnityPropertyMap<double, GraphInterface::edge_t> weight_map_t;
     typedef mpl::push_back<edge_scalar_properties, weight_map_t>::type
         weight_props_t;
 
@@ -45,7 +45,7 @@ void adjacency(GraphInterface& g, boost::any index, boost::any weight,
         throw ValueException("weight edge property must have a scalar value type");
 
     if(weight.empty())
-        weight = weight_map_t(1.0);
+        weight = weight_map_t();
 
     multi_array_ref<double,1> data = get_array<double,1>(odata);
     multi_array_ref<int32_t,1> i = get_array<int32_t,1>(oi);

src/graph/spectral/graph_laplacian.cc

@@ -38,7 +38,7 @@ void laplacian(GraphInterface& g, boost::any index, boost::any weight,
     if (!belongs<vertex_scalar_properties>()(index))
         throw ValueException("index vertex property must have a scalar value type");
 
-    typedef ConstantPropertyMap<double, GraphInterface::edge_t> weight_map_t;
+    typedef UnityPropertyMap<double, GraphInterface::edge_t> weight_map_t;
     typedef mpl::push_back<edge_scalar_properties, weight_map_t>::type
         weight_props_t;
 
@@ -46,7 +46,7 @@ void laplacian(GraphInterface& g, boost::any index, boost::any weight,
         throw ValueException("weight edge property must have a scalar value type");
 
     if(weight.empty())
-        weight = weight_map_t(1.0);
+        weight = weight_map_t();
 
     deg_t deg;
     if (sdeg == "in")

src/graph/spectral/graph_laplacian.hh

@@ -45,26 +45,26 @@ sum_degree(Graph& g, typename graph_traits<Graph>::vertex_descriptor v,
     return sum;
 }
 
-template <class Graph, class EdgeSelector>
+template <class Graph, class EdgeSelector, class Val>
 double
 sum_degree(Graph& g, typename graph_traits<Graph>::vertex_descriptor v,
-           ConstantPropertyMap<double, GraphInterface::edge_t>, all_edges_iteratorS<Graph>)
+           UnityPropertyMap<Val, GraphInterface::edge_t>, all_edges_iteratorS<Graph>)
 {
     return total_degreeS()(v, g);
 }
 
-template <class Graph, class EdgeSelector>
+template <class Graph, class EdgeSelector, class Val>
 double
 sum_degree(Graph& g, typename graph_traits<Graph>::vertex_descriptor v,
-           ConstantPropertyMap<double, GraphInterface::edge_t>, in_edge_iteratorS<Graph>)
+           UnityPropertyMap<Val, GraphInterface::edge_t>, in_edge_iteratorS<Graph>)
 {
     return in_degreeS()(v, g);
 }
 
-template <class Graph, class EdgeSelector>
+template <class Graph, class EdgeSelector, class Val>
 double
 sum_degree(Graph& g, typename graph_traits<Graph>::vertex_descriptor v,
-           ConstantPropertyMap<double, GraphInterface::edge_t>, out_edge_iteratorS<Graph>)
+           UnityPropertyMap<Val, GraphInterface::edge_t>, out_edge_iteratorS<Graph>)
 {
     return out_degreeS()(v, g);
 }

src/graph/spectral/graph_norm_laplacian.cc

@@ -38,7 +38,7 @@ void norm_laplacian(GraphInterface& g, boost::any index, boost::any weight,
     if (!belongs<vertex_scalar_properties>()(index))
         throw ValueException("index vertex property must have a scalar value type");
 
-    typedef ConstantPropertyMap<double, GraphInterface::edge_t> weight_map_t;
+    typedef UnityPropertyMap<double, GraphInterface::edge_t> weight_map_t;
     typedef mpl::push_back<edge_scalar_properties, weight_map_t>::type
         weight_props_t;
 
@@ -46,7 +46,7 @@ void norm_laplacian(GraphInterface& g, boost::any index, boost::any weight,
         throw ValueException("weight edge property must have a scalar value type");
 
     if(weight.empty())
-        weight = weight_map_t(1.0);
+        weight = weight_map_t();
 
     deg_t deg;
     if (sdeg == "in")

src/graph/spectral/graph_transition.cc

@@ -37,7 +37,7 @@ void transition(GraphInterface& g, boost::any index, boost::any weight,
     if (!belongs<vertex_scalar_properties>()(index))
         throw ValueException("index vertex property must have a scalar value type");
 
-    typedef ConstantPropertyMap<size_t, GraphInterface::edge_t> weight_map_t;
+    typedef UnityPropertyMap<int,GraphInterface::edge_t> weight_map_t;
     typedef mpl::push_back<edge_scalar_properties, weight_map_t>::type
         weight_props_t;
 
@@ -45,7 +45,7 @@ void transition(GraphInterface& g, boost::any index, boost::any weight,
         throw ValueException("weight edge property must have a scalar value type");
 
     if(weight.empty())
-        weight = weight_map_t(1);
+        weight = weight_map_t();
 
     multi_array_ref<double,1> data = get_array<double,1>(odata);
     multi_array_ref<int32_t,1> i = get_array<int32_t,1>(oi);

src/graph/spectral/graph_transition.hh

@@ -38,10 +38,10 @@ sum_degree(Graph& g, typename graph_traits<Graph>::vertex_descriptor v,
     return sum;
 }
 
-template <class Graph>
+template <class Graph, class Type>
 size_t
 sum_degree(Graph& g, typename graph_traits<Graph>::vertex_descriptor v,
-           const ConstantPropertyMap<size_t, GraphInterface::edge_t>&)
+           const UnityPropertyMap<Type,GraphInterface::edge_t>&)
 {
     return out_degreeS()(v, g);
 }

src/graph/topology/graph_minimum_spanning_tree.cc

@@ -116,10 +116,10 @@ void get_kruskal_spanning_tree(GraphInterface& gi, boost::any weight_map,
                                boost::any tree_map)
 {
 
-    typedef ConstantPropertyMap<size_t,GraphInterface::edge_t> cweight_t;
+    typedef UnityPropertyMap<size_t,GraphInterface::edge_t> cweight_t;
 
     if (weight_map.empty())
-        weight_map = cweight_t(1);
+        weight_map = cweight_t();
 
     typedef mpl::push_back<writable_edge_scalar_properties, cweight_t>::type
         weight_maps;
@@ -133,10 +133,10 @@ void get_kruskal_spanning_tree(GraphInterface& gi, boost::any weight_map,
 void get_prim_spanning_tree(GraphInterface& gi, size_t root,
                             boost::any weight_map, boost::any tree_map)
 {
-    typedef ConstantPropertyMap<size_t,GraphInterface::edge_t> cweight_t;
+    typedef UnityPropertyMap<size_t,GraphInterface::edge_t> cweight_t;
 
     if (weight_map.empty())
-        weight_map = cweight_t(1);
+        weight_map = cweight_t();
 
     typedef mpl::push_back<writable_edge_scalar_properties, cweight_t>::type
         weight_maps;

src/graph/topology/graph_random_matching.cc

@@ -93,12 +93,12 @@ struct do_random_matching
 void random_matching(GraphInterface& gi, boost::any weight, boost::any match,
                      bool minimize, rng_t& rng)
 {
-    typedef ConstantPropertyMap<int32_t,GraphInterface::edge_t> weight_map_t;
+    typedef UnityPropertyMap<int,GraphInterface::edge_t> weight_map_t;
     typedef mpl::push_back<edge_scalar_properties, weight_map_t>::type
         edge_props_t;
 
     if(weight.empty())
-        weight = weight_map_t(1);
+        weight = weight_map_t();
 
     run_action<>()
         (gi, std::bind(do_random_matching(), std::placeholders::_1, gi.get_vertex_index(),

src/graph/topology/graph_random_spanning_tree.cc

@@ -85,10 +85,10 @@ void get_random_spanning_tree(GraphInterface& gi, size_t root,
                               boost::any weight_map, boost::any tree_map,
                               rng_t& rng)
 {
-    typedef ConstantPropertyMap<size_t,GraphInterface::edge_t> cweight_t;
+    typedef UnityPropertyMap<size_t,GraphInterface::edge_t> cweight_t;
 
     if (weight_map.empty())
-        weight_map = cweight_t(1);
+        weight_map = cweight_t();
 
     typedef mpl::push_back<writable_edge_scalar_properties, cweight_t>::type
         weight_maps;

src/graph/topology/graph_subgraph_isomorphism.cc

@@ -184,24 +184,24 @@ subgraph_isomorphism(GraphInterface& gi1, GraphInterface& gi2,
                      size_t max_n, bool induced, bool iso, bool generator)
 {
     // typedef mpl::push_back<vertex_properties,
-    //                        ConstantPropertyMap<bool,GraphInterface::vertex_t> >
+    //                        UnityPropertyMap<bool,GraphInterface::vertex_t> >
     //     ::type vertex_props_t;
 
     // typedef mpl::push_back<edge_properties,
-    //                        ConstantPropertyMap<bool,GraphInterface::edge_t> >
+    //                        UnityPropertyMap<bool,GraphInterface::edge_t> >
     //     ::type edge_props_t;
 
     typedef property_map_type::apply<int64_t,
                                      GraphInterface::vertex_index_map_t>::type vlabel_t;
     typedef mpl::vector2<typename vlabel_t::unchecked_t,
-                         ConstantPropertyMap<bool,
-                                             GraphInterface::vertex_t> > vertex_props_t;
+                         UnityPropertyMap<bool,
+                                          GraphInterface::vertex_t> > vertex_props_t;
 
     typedef property_map_type::apply<int64_t,
                                      GraphInterface::edge_index_map_t>::type elabel_t;
     typedef mpl::vector2<typename elabel_t::unchecked_t,
-                         ConstantPropertyMap<bool,
-                                             GraphInterface::edge_t> > edge_props_t;
+                         UnityPropertyMap<bool,
+                                          GraphInterface::edge_t> > edge_props_t;