Struct petgraph::stable_graph::StableGraph
[−]
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pub struct StableGraph<N, E, Ty = Directed, Ix = DefaultIx> { /* fields omitted */ }
StableGraph<N, E, Ty, Ix>
is a graph datastructure using an adjacency
list representation.
The graph does not invalidate any unrelated node or edge indices when items are removed.
StableGraph
is parameterized over:
- Associated data
N
for nodes andE
for edges, also called weights. The associated data can be of arbitrary type. - Edge type
Ty
that determines whether the graph edges are directed or undirected. - Index type
Ix
, which determines the maximum size of the graph.
The graph uses O(|V| + |E|) space, and allows fast node and edge insert and efficient graph search.
It implements O(e') edge lookup and edge and node removals, where e' is some local measure of edge count.
-
Nodes and edges are each numbered in an interval from 0 to some number m, but not all indices in the range are valid, since gaps are formed by deletions.
-
You can select graph index integer type after the size of the graph. A smaller size may have better performance.
-
Using indices allows mutation while traversing the graph, see
Dfs
. -
The
StableGraph
is a regular rust collection and isSend
andSync
(as long as associated dataN
andE
are). -
Indices don't allow as much compile time checking as references.
Depends on crate feature stable_graph
(default). Stable Graph is still
missing a few methods compared to Graph. You can contribute to help it
achieve parity.
Methods
impl<N, E> StableGraph<N, E, Directed>
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pub fn new() -> Self
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Create a new StableGraph
with directed edges.
This is a convenience method. See StableGraph::with_capacity
or StableGraph::default
for a constructor that is generic in all the
type parameters of StableGraph
.
impl<N, E, Ty, Ix> StableGraph<N, E, Ty, Ix> where
Ty: EdgeType,
Ix: IndexType,
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Ty: EdgeType,
Ix: IndexType,
pub fn with_capacity(nodes: usize, edges: usize) -> Self
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Create a new StableGraph
with estimated capacity.
pub fn capacity(&self) -> (usize, usize)
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Return the current node and edge capacity of the graph.
pub fn clear(&mut self)
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Remove all nodes and edges
pub fn clear_edges(&mut self)
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Remove all edges
pub fn node_count(&self) -> usize
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Return the number of nodes (vertices) in the graph.
Computes in O(1) time.
pub fn edge_count(&self) -> usize
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Return the number of edges in the graph.
Computes in O(1) time.
pub fn is_directed(&self) -> bool
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Whether the graph has directed edges or not.
pub fn add_node(&mut self, weight: N) -> NodeIndex<Ix>
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Add a node (also called vertex) with associated data weight
to the graph.
Computes in O(1) time.
Return the index of the new node.
Panics if the StableGraph
is at the maximum number of nodes for
its index type.
pub fn remove_node(&mut self, a: NodeIndex<Ix>) -> Option<N>
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Remove a
from the graph if it exists, and return its weight.
If it doesn't exist in the graph, return None
.
The node index a
is invalidated, but none other.
Edge indices are invalidated as they would be following the removal of
each edge with an endpoint in a
.
Computes in O(e') time, where e' is the number of affected
edges, including n calls to .remove_edge()
where n is the number
of edges with an endpoint in a
.
pub fn contains_node(&self, a: NodeIndex<Ix>) -> bool
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pub fn add_edge(
&mut self,
a: NodeIndex<Ix>,
b: NodeIndex<Ix>,
weight: E
) -> EdgeIndex<Ix>
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&mut self,
a: NodeIndex<Ix>,
b: NodeIndex<Ix>,
weight: E
) -> EdgeIndex<Ix>
Add an edge from a
to b
to the graph, with its associated
data weight
.
Return the index of the new edge.
Computes in O(1) time.
Panics if any of the nodes don't exist.
Panics if the StableGraph
is at the maximum number of edges for
its index type.
Note: StableGraph
allows adding parallel (“duplicate”) edges.
pub fn update_edge(
&mut self,
a: NodeIndex<Ix>,
b: NodeIndex<Ix>,
weight: E
) -> EdgeIndex<Ix>
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&mut self,
a: NodeIndex<Ix>,
b: NodeIndex<Ix>,
weight: E
) -> EdgeIndex<Ix>
Add or update an edge from a
to b
.
If the edge already exists, its weight is updated.
Return the index of the affected edge.
Computes in O(e') time, where e' is the number of edges
connected to a
(and b
, if the graph edges are undirected).
Panics if any of the nodes don't exist.
pub fn remove_edge(&mut self, e: EdgeIndex<Ix>) -> Option<E>
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Remove an edge and return its edge weight, or None
if it didn't exist.
Invalidates the edge index e
but no other.
Computes in O(e') time, where e' is the number of edges
conneced to the same endpoints as e
.
pub fn node_weight(&self, a: NodeIndex<Ix>) -> Option<&N>
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Access the weight for node a
.
Also available with indexing syntax: &graph[a]
.
pub fn node_weight_mut(&mut self, a: NodeIndex<Ix>) -> Option<&mut N>
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Access the weight for node a
, mutably.
Also available with indexing syntax: &mut graph[a]
.
ⓘImportant traits for NodeIndices<'a, N, Ix>pub fn node_indices(&self) -> NodeIndices<N, Ix>
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Return an iterator over the node indices of the graph
pub fn edge_weight(&self, e: EdgeIndex<Ix>) -> Option<&E>
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Access the weight for edge e
.
Also available with indexing syntax: &graph[e]
.
pub fn edge_weight_mut(&mut self, e: EdgeIndex<Ix>) -> Option<&mut E>
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Access the weight for edge e
, mutably
Also available with indexing syntax: &mut graph[e]
.
pub fn edge_endpoints(
&self,
e: EdgeIndex<Ix>
) -> Option<(NodeIndex<Ix>, NodeIndex<Ix>)>
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&self,
e: EdgeIndex<Ix>
) -> Option<(NodeIndex<Ix>, NodeIndex<Ix>)>
Access the source and target nodes for e
.
ⓘImportant traits for EdgeIndices<'a, E, Ix>pub fn edge_indices(&self) -> EdgeIndices<E, Ix>
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Return an iterator over the node indices of the graph
pub fn find_edge(
&self,
a: NodeIndex<Ix>,
b: NodeIndex<Ix>
) -> Option<EdgeIndex<Ix>>
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&self,
a: NodeIndex<Ix>,
b: NodeIndex<Ix>
) -> Option<EdgeIndex<Ix>>
Lookup an edge from a
to b
.
Computes in O(e') time, where e' is the number of edges
connected to a
(and b
, if the graph edges are undirected).
pub fn find_edge_undirected(
&self,
a: NodeIndex<Ix>,
b: NodeIndex<Ix>
) -> Option<(EdgeIndex<Ix>, Direction)>
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&self,
a: NodeIndex<Ix>,
b: NodeIndex<Ix>
) -> Option<(EdgeIndex<Ix>, Direction)>
Lookup an edge between a
and b
, in either direction.
If the graph is undirected, then this is equivalent to .find_edge()
.
Return the edge index and its directionality, with Outgoing
meaning
from a
to b
and Incoming
the reverse,
or None
if the edge does not exist.
ⓘImportant traits for Neighbors<'a, E, Ix>pub fn neighbors(&self, a: NodeIndex<Ix>) -> Neighbors<E, Ix>
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Return an iterator of all nodes with an edge starting from a
.
Directed
: Outgoing edges froma
.Undirected
: All edges connected toa
.
Produces an empty iterator if the node doesn't exist.
Iterator element type is NodeIndex<Ix>
.
Use .neighbors(a).detach()
to get a neighbor walker that does
not borrow from the graph.
ⓘImportant traits for Neighbors<'a, E, Ix>pub fn neighbors_directed(
&self,
a: NodeIndex<Ix>,
dir: Direction
) -> Neighbors<E, Ix>
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&self,
a: NodeIndex<Ix>,
dir: Direction
) -> Neighbors<E, Ix>
Return an iterator of all neighbors that have an edge between them and a
,
in the specified direction.
If the graph's edges are undirected, this is equivalent to .neighbors(a).
Directed
,Outgoing
: All edges froma
.Directed
,Incoming
: All edges toa
.Undirected
: All edges connected toa
.
Produces an empty iterator if the node doesn't exist.
Iterator element type is NodeIndex<Ix>
.
Use .neighbors_directed(a, dir).detach()
to get a neighbor walker that does
not borrow from the graph.
ⓘImportant traits for Neighbors<'a, E, Ix>pub fn neighbors_undirected(&self, a: NodeIndex<Ix>) -> Neighbors<E, Ix>
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Return an iterator of all neighbors that have an edge between them and a
,
in either direction.
If the graph's edges are undirected, this is equivalent to .neighbors(a).
Directed
andUndirected
: All edges connected toa
.
Produces an empty iterator if the node doesn't exist.
Iterator element type is NodeIndex<Ix>
.
Use .neighbors_undirected(a).detach()
to get a neighbor walker that does
not borrow from the graph.
ⓘImportant traits for Edges<'a, E, Ty, Ix>pub fn edges(&self, a: NodeIndex<Ix>) -> Edges<E, Ty, Ix>
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Return an iterator of all edges of a
.
Directed
: Outgoing edges froma
.Undirected
: All edges connected toa
.
Produces an empty iterator if the node doesn't exist.
Iterator element type is EdgeReference<E, Ix>
.
ⓘImportant traits for Edges<'a, E, Ty, Ix>pub fn edges_directed(
&self,
a: NodeIndex<Ix>,
dir: Direction
) -> Edges<E, Ty, Ix>
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&self,
a: NodeIndex<Ix>,
dir: Direction
) -> Edges<E, Ty, Ix>
Return an iterator of all edges of a
, in the specified direction.
Directed
,Outgoing
: All edges froma
.Directed
,Incoming
: All edges toa
.Undirected
: All edges connected toa
.
Produces an empty iterator if the node a
doesn't exist.
Iterator element type is EdgeReference<E, Ix>
.
pub fn index_twice_mut<T, U>(
&mut self,
i: T,
j: U
) -> (&mut Self::Output, &mut Self::Output) where
Self: IndexMut<T> + IndexMut<U>,
T: GraphIndex,
U: GraphIndex,
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&mut self,
i: T,
j: U
) -> (&mut Self::Output, &mut Self::Output) where
Self: IndexMut<T> + IndexMut<U>,
T: GraphIndex,
U: GraphIndex,
Index the StableGraph
by two indices, any combination of
node or edge indices is fine.
Panics if the indices are equal or if they are out of bounds.
pub fn retain_nodes<F>(&mut self, visit: F) where
F: FnMut(Frozen<Self>, NodeIndex<Ix>) -> bool,
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F: FnMut(Frozen<Self>, NodeIndex<Ix>) -> bool,
Keep all nodes that return true
from the visit
closure,
remove the others.
visit
is provided a proxy reference to the graph, so that
the graph can be walked and associated data modified.
The order nodes are visited is not specified.
The node indices of the removed nodes are invalidated, but none other. Edge indices are invalidated as they would be following the removal of each edge with an endpoint in a removed node.
Computes in O(n + e') time, where n is the number of node indices and
e' is the number of affected edges, including n calls to .remove_edge()
where n is the number of edges with an endpoint in a removed node.
pub fn retain_edges<F>(&mut self, visit: F) where
F: FnMut(Frozen<Self>, EdgeIndex<Ix>) -> bool,
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F: FnMut(Frozen<Self>, EdgeIndex<Ix>) -> bool,
Keep all edges that return true
from the visit
closure,
remove the others.
visit
is provided a proxy reference to the graph, so that
the graph can be walked and associated data modified.
The order edges are visited is not specified.
The edge indices of the removed edes are invalidated, but none other.
Computes in O(e'') time, e' is the number of affected edges,
including the calls to .remove_edge()
for each removed edge.
pub fn from_edges<I>(iterable: I) -> Self where
I: IntoIterator,
I::Item: IntoWeightedEdge<E>,
<I::Item as IntoWeightedEdge<E>>::NodeId: Into<NodeIndex<Ix>>,
N: Default,
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I: IntoIterator,
I::Item: IntoWeightedEdge<E>,
<I::Item as IntoWeightedEdge<E>>::NodeId: Into<NodeIndex<Ix>>,
N: Default,
Create a new StableGraph
from an iterable of edges.
Node weights N
are set to default values.
Edge weights E
may either be specified in the list,
or they are filled with default values.
Nodes are inserted automatically to match the edges.
use petgraph::stable_graph::StableGraph; let gr = StableGraph::<(), i32>::from_edges(&[ (0, 1), (0, 2), (0, 3), (1, 2), (1, 3), (2, 3), ]);
pub fn map<'a, F, G, N2, E2>(
&'a self,
node_map: F,
edge_map: G
) -> StableGraph<N2, E2, Ty, Ix> where
F: FnMut(NodeIndex<Ix>, &'a N) -> N2,
G: FnMut(EdgeIndex<Ix>, &'a E) -> E2,
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&'a self,
node_map: F,
edge_map: G
) -> StableGraph<N2, E2, Ty, Ix> where
F: FnMut(NodeIndex<Ix>, &'a N) -> N2,
G: FnMut(EdgeIndex<Ix>, &'a E) -> E2,
Create a new StableGraph
by mapping node and
edge weights to new values.
The resulting graph has the same structure and the same
graph indices as self
.
pub fn filter_map<'a, F, G, N2, E2>(
&'a self,
node_map: F,
edge_map: G
) -> StableGraph<N2, E2, Ty, Ix> where
F: FnMut(NodeIndex<Ix>, &'a N) -> Option<N2>,
G: FnMut(EdgeIndex<Ix>, &'a E) -> Option<E2>,
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&'a self,
node_map: F,
edge_map: G
) -> StableGraph<N2, E2, Ty, Ix> where
F: FnMut(NodeIndex<Ix>, &'a N) -> Option<N2>,
G: FnMut(EdgeIndex<Ix>, &'a E) -> Option<E2>,
Create a new StableGraph
by mapping nodes and edges.
A node or edge may be mapped to None
to exclude it from
the resulting graph.
Nodes are mapped first with the node_map
closure, then
edge_map
is called for the edges that have not had any endpoint
removed.
The resulting graph has the structure of a subgraph of the original graph. Nodes and edges that are not removed maintain their old node or edge indices.
pub fn extend_with_edges<I>(&mut self, iterable: I) where
I: IntoIterator,
I::Item: IntoWeightedEdge<E>,
<I::Item as IntoWeightedEdge<E>>::NodeId: Into<NodeIndex<Ix>>,
N: Default,
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I: IntoIterator,
I::Item: IntoWeightedEdge<E>,
<I::Item as IntoWeightedEdge<E>>::NodeId: Into<NodeIndex<Ix>>,
N: Default,
Extend the graph from an iterable of edges.
Node weights N
are set to default values.
Edge weights E
may either be specified in the list,
or they are filled with default values.
Nodes are inserted automatically to match the edges.
Trait Implementations
impl<'a, N, E: 'a, Ty, Ix> IntoNeighbors for &'a StableGraph<N, E, Ty, Ix> where
Ty: EdgeType,
Ix: IndexType,
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Ty: EdgeType,
Ix: IndexType,
type Neighbors = Neighbors<'a, E, Ix>
fn neighbors(self, n: Self::NodeId) -> Self::Neighbors
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Return an iterator of the neighbors of node a
.
impl<'a, N, E: 'a, Ty, Ix> IntoNeighborsDirected for &'a StableGraph<N, E, Ty, Ix> where
Ty: EdgeType,
Ix: IndexType,
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Ty: EdgeType,
Ix: IndexType,
type NeighborsDirected = Neighbors<'a, E, Ix>
fn neighbors_directed(
self,
n: NodeIndex<Ix>,
d: Direction
) -> Self::NeighborsDirected
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self,
n: NodeIndex<Ix>,
d: Direction
) -> Self::NeighborsDirected
impl<'a, N, E: 'a, Ty, Ix> IntoNodeIdentifiers for &'a StableGraph<N, E, Ty, Ix> where
Ty: EdgeType,
Ix: IndexType,
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Ty: EdgeType,
Ix: IndexType,
type NodeIdentifiers = NodeIndices<'a, N, Ix>
fn node_identifiers(self) -> Self::NodeIdentifiers
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impl<N, E, Ty, Ix> NodeCount for StableGraph<N, E, Ty, Ix> where
Ty: EdgeType,
Ix: IndexType,
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Ty: EdgeType,
Ix: IndexType,
fn node_count(&self) -> usize
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impl<N, E, Ty, Ix> GraphProp for StableGraph<N, E, Ty, Ix> where
Ty: EdgeType,
Ix: IndexType,
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Ty: EdgeType,
Ix: IndexType,
impl<N, E, Ty, Ix> GraphBase for StableGraph<N, E, Ty, Ix> where
Ix: IndexType,
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Ix: IndexType,
impl<N, E, Ty, Ix> Visitable for StableGraph<N, E, Ty, Ix> where
Ty: EdgeType,
Ix: IndexType,
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Ty: EdgeType,
Ix: IndexType,
type Map = FixedBitSet
The associated map type
fn visit_map(&self) -> FixedBitSet
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Create a new visitor map
fn reset_map(&self, map: &mut Self::Map)
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Reset the visitor map (and resize to new size of graph if needed)
impl<N, E, Ty, Ix> Data for StableGraph<N, E, Ty, Ix> where
Ty: EdgeType,
Ix: IndexType,
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Ty: EdgeType,
Ix: IndexType,
type NodeWeight = N
type EdgeWeight = E
impl<N, E, Ty, Ix> DataMap for StableGraph<N, E, Ty, Ix> where
Ty: EdgeType,
Ix: IndexType,
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Ty: EdgeType,
Ix: IndexType,
fn node_weight(&self, id: Self::NodeId) -> Option<&Self::NodeWeight>
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fn edge_weight(&self, id: Self::EdgeId) -> Option<&Self::EdgeWeight>
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impl<N, E, Ty, Ix> DataMapMut for StableGraph<N, E, Ty, Ix> where
Ty: EdgeType,
Ix: IndexType,
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Ty: EdgeType,
Ix: IndexType,
fn node_weight_mut(&mut self, id: Self::NodeId) -> Option<&mut Self::NodeWeight>
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fn edge_weight_mut(&mut self, id: Self::EdgeId) -> Option<&mut Self::EdgeWeight>
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impl<N, E, Ty, Ix> Build for StableGraph<N, E, Ty, Ix> where
Ty: EdgeType,
Ix: IndexType,
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Ty: EdgeType,
Ix: IndexType,
fn add_node(&mut self, weight: Self::NodeWeight) -> Self::NodeId
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fn add_edge(
&mut self,
a: Self::NodeId,
b: Self::NodeId,
weight: Self::EdgeWeight
) -> Option<Self::EdgeId>
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&mut self,
a: Self::NodeId,
b: Self::NodeId,
weight: Self::EdgeWeight
) -> Option<Self::EdgeId>
Add a new edge. If parallel edges (duplicate) are not allowed and the edge already exists, return None
. Read more
fn update_edge(
&mut self,
a: Self::NodeId,
b: Self::NodeId,
weight: Self::EdgeWeight
) -> Self::EdgeId
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&mut self,
a: Self::NodeId,
b: Self::NodeId,
weight: Self::EdgeWeight
) -> Self::EdgeId
Add or update the edge from a
to b
. Return the id of the affected edge. Read more
impl<N, E, Ty, Ix> Create for StableGraph<N, E, Ty, Ix> where
Ty: EdgeType,
Ix: IndexType,
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Ty: EdgeType,
Ix: IndexType,
fn with_capacity(nodes: usize, edges: usize) -> Self
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impl<N, E, Ty, Ix> FromElements for StableGraph<N, E, Ty, Ix> where
Ty: EdgeType,
Ix: IndexType,
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Ty: EdgeType,
Ix: IndexType,
fn from_elements<I>(iterable: I) -> Self where
Self: Sized,
I: IntoIterator<Item = Element<Self::NodeWeight, Self::EdgeWeight>>,
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Self: Sized,
I: IntoIterator<Item = Element<Self::NodeWeight, Self::EdgeWeight>>,
impl<N, E, Ty, Ix> Debug for StableGraph<N, E, Ty, Ix> where
N: Debug,
E: Debug,
Ty: EdgeType,
Ix: IndexType,
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N: Debug,
E: Debug,
Ty: EdgeType,
Ix: IndexType,
fn fmt(&self, f: &mut Formatter) -> Result
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Formats the value using the given formatter. Read more
impl<N, E, Ty, Ix: IndexType> Clone for StableGraph<N, E, Ty, Ix> where
N: Clone,
E: Clone,
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N: Clone,
E: Clone,
The resulting cloned graph has the same graph indices as self
.
fn clone(&self) -> Self
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Returns a copy of the value. Read more
fn clone_from(&mut self, rhs: &Self)
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Performs copy-assignment from source
. Read more
impl<N, E, Ty, Ix> Index<NodeIndex<Ix>> for StableGraph<N, E, Ty, Ix> where
Ty: EdgeType,
Ix: IndexType,
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Ty: EdgeType,
Ix: IndexType,
Index the StableGraph
by NodeIndex
to access node weights.
Panics if the node doesn't exist.
type Output = N
The returned type after indexing.
fn index(&self, index: NodeIndex<Ix>) -> &N
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Performs the indexing (container[index]
) operation.
impl<N, E, Ty, Ix> IndexMut<NodeIndex<Ix>> for StableGraph<N, E, Ty, Ix> where
Ty: EdgeType,
Ix: IndexType,
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Ty: EdgeType,
Ix: IndexType,
Index the StableGraph
by NodeIndex
to access node weights.
Panics if the node doesn't exist.
fn index_mut(&mut self, index: NodeIndex<Ix>) -> &mut N
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Performs the mutable indexing (container[index]
) operation.
impl<N, E, Ty, Ix> Index<EdgeIndex<Ix>> for StableGraph<N, E, Ty, Ix> where
Ty: EdgeType,
Ix: IndexType,
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Ty: EdgeType,
Ix: IndexType,
Index the StableGraph
by EdgeIndex
to access edge weights.
Panics if the edge doesn't exist.
type Output = E
The returned type after indexing.
fn index(&self, index: EdgeIndex<Ix>) -> &E
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Performs the indexing (container[index]
) operation.
impl<N, E, Ty, Ix> IndexMut<EdgeIndex<Ix>> for StableGraph<N, E, Ty, Ix> where
Ty: EdgeType,
Ix: IndexType,
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Ty: EdgeType,
Ix: IndexType,
Index the StableGraph
by EdgeIndex
to access edge weights.
Panics if the edge doesn't exist.
fn index_mut(&mut self, index: EdgeIndex<Ix>) -> &mut E
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Performs the mutable indexing (container[index]
) operation.
impl<N, E, Ty, Ix> Default for StableGraph<N, E, Ty, Ix> where
Ty: EdgeType,
Ix: IndexType,
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Ty: EdgeType,
Ix: IndexType,
Create a new empty StableGraph
.
impl<N, E, Ty, Ix> From<Graph<N, E, Ty, Ix>> for StableGraph<N, E, Ty, Ix> where
Ty: EdgeType,
Ix: IndexType,
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Ty: EdgeType,
Ix: IndexType,
Convert a Graph
into a StableGraph
Computes in O(|V| + |E|) time.
The resulting graph has the same node and edge indices as the original graph.
impl<N, E, Ty, Ix> From<StableGraph<N, E, Ty, Ix>> for Graph<N, E, Ty, Ix> where
Ty: EdgeType,
Ix: IndexType,
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Ty: EdgeType,
Ix: IndexType,
Convert a StableGraph
into a Graph
Computes in O(|V| + |E|) time.
This translates the stable graph into a graph with node and edge indices in
a compact interval without holes (like Graph
s always are).
Only if the stable graph had no vacancies after deletions (if node bound was equal to node count, and the same for edges), would the resulting graph have the same node and edge indices as the input.
fn from(graph: StableGraph<N, E, Ty, Ix>) -> Self
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Performs the conversion.
impl<'a, N, E, Ty, Ix> IntoNodeReferences for &'a StableGraph<N, E, Ty, Ix> where
Ty: EdgeType,
Ix: IndexType,
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Ty: EdgeType,
Ix: IndexType,
type NodeRef = (NodeIndex<Ix>, &'a N)
type NodeReferences = NodeReferences<'a, N, Ix>
fn node_references(self) -> Self::NodeReferences
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impl<'a, N, E, Ty, Ix> IntoEdges for &'a StableGraph<N, E, Ty, Ix> where
Ty: EdgeType,
Ix: IndexType,
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Ty: EdgeType,
Ix: IndexType,
impl<'a, N, E, Ty, Ix> IntoEdgesDirected for &'a StableGraph<N, E, Ty, Ix> where
Ty: EdgeType,
Ix: IndexType,
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Ty: EdgeType,
Ix: IndexType,
type EdgesDirected = Edges<'a, E, Ty, Ix>
fn edges_directed(self, a: Self::NodeId, dir: Direction) -> Self::EdgesDirected
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impl<'a, N: 'a, E: 'a, Ty, Ix> IntoEdgeReferences for &'a StableGraph<N, E, Ty, Ix> where
Ty: EdgeType,
Ix: IndexType,
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Ty: EdgeType,
Ix: IndexType,
type EdgeRef = EdgeReference<'a, E, Ix>
type EdgeReferences = EdgeReferences<'a, E, Ix>
fn edge_references(self) -> Self::EdgeReferences
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Create an iterator over all edges in the graph, in indexed order.
Iterator element type is EdgeReference<E, Ix>
.
impl<N, E, Ty, Ix> NodeIndexable for StableGraph<N, E, Ty, Ix> where
Ty: EdgeType,
Ix: IndexType,
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Ty: EdgeType,
Ix: IndexType,
fn node_bound(&self) -> usize
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Return an upper bound of the node indices in the graph
fn to_index(&self, ix: NodeIndex<Ix>) -> usize
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Convert a
to an integer index.
fn from_index(&self, ix: usize) -> Self::NodeId
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Convert i
to a node index
impl<N, E, Ty, Ix> GetAdjacencyMatrix for StableGraph<N, E, Ty, Ix> where
Ty: EdgeType,
Ix: IndexType,
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Ty: EdgeType,
Ix: IndexType,
The adjacency matrix for Graph is a bitmap that's computed by
.adjacency_matrix()
.
type AdjMatrix = FixedBitSet
The associated adjacency matrix type
fn adjacency_matrix(&self) -> FixedBitSet
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Create the adjacency matrix
fn is_adjacent(
&self,
matrix: &FixedBitSet,
a: NodeIndex<Ix>,
b: NodeIndex<Ix>
) -> bool
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&self,
matrix: &FixedBitSet,
a: NodeIndex<Ix>,
b: NodeIndex<Ix>
) -> bool
Return true if there is an edge from a
to b
, false otherwise. Read more