Safe Haskell  Safe 

Language  Haskell2010 
 class Graph g where
 data Edge v e = Edge v v e
 data Arc v e = Arc v v e
 (<>) :: Hashable v => v > v > Edge v ()
 (>) :: Hashable v => v > v > Arc v ()
 class IsEdge e where
 class Weighted a where
 class Labeled a where
 tripleToPair :: (a, b, c) > (a, b)
 arbitraryEdge :: (Arbitrary v, Arbitrary e, Ord v, Num v) => (v > v > e > edge) > Gen edge
 type Links v e = HashMap v e
 insertLink :: (Hashable v, Eq v) => v > a > Links v a > Links v a
 getLinks :: (Hashable v, Eq v) => v > HashMap v (Links v e) > Links v e
 linksToArcs :: [(v, Links v a)] > [Arc v a]
 linksToEdges :: [(v, Links v a)] > [Edge v a]
 hashMapInsert :: (Eq k, Hashable k) => k > v > HashMap k v > HashMap k v
Documentation
empty, order, vertices, edgeTriples, containsVertex, areAdjacent, adjacentVertices', reachableAdjacentVertices', vertexDegree, insertVertex, containsEdgePair, incidentEdgeTriples, insertEdgeTriple, removeVertex, removeEdgePair, isSimple, fromAdjacencyMatrix, toAdjacencyMatrix
empty :: Hashable v => g v e Source #
The Empty (orderzero) graph with no vertices and no edges
order :: g v e > Int Source #
Retrieve the order of a graph
 The order
of a graph is its number of vertices
size :: (Hashable v, Eq v) => g v e > Int Source #
Retrieve the size of a graph
 The size
of a graph is its number of edges
vertices :: g v e > [v] Source #
Retrieve the vertices of a graph
edgeTriples :: (Hashable v, Eq v) => g v e > [(v, v, e)] Source #
Retrieve the edges of a graph
edgePairs :: (Hashable v, Eq v) => g v e > [(v, v)] Source #
Retrieve the edges of a graph, ignoring its attributes
containsVertex :: (Hashable v, Eq v) => g v e > v > Bool Source #
Tell if a vertex exists in the graph
areAdjacent :: (Hashable v, Eq v) => g v e > v > v > Bool Source #
Tell if two vertices are adjacent
adjacentVertices :: (Hashable v, Eq v) => g v e > v > [v] Source #
Retrieve the adjacent vertices of a vertex
adjacentVertices' :: (Hashable v, Eq v) => g v e > v > [(v, e)] Source #
Same as adjacentVertices
but pairs the vertex with the connecting
 edge's attribute
reachableAdjacentVertices :: (Hashable v, Eq v) => g v e > v > [v] Source #
Same as adjacentVertices
but gives back only those vertices for which
 the connecting edge allows the vertex to be reached.

 For an undirected graph this is equivalent to adjacentVertices
, but
 for the case of a directed graph, the directed arcs will constrain the
 reachability of the adjacent vertices.
reachableAdjacentVertices' :: (Hashable v, Eq v) => g v e > v > [(v, e)] Source #
Same as reachableAdjacentVertices
but pairs the vertex with the
 connecting edge's attribute
vertexDegree :: (Hashable v, Eq v) => g v e > v > Int Source #
Total number of incident edges of a vertex
degrees :: (Hashable v, Eq v) => g v e > [Int] Source #
Degrees of a all the vertices in a graph
maxDegree :: (Hashable v, Eq v) => g v e > Int Source #
Maximum degree of a graph
minDegree :: (Hashable v, Eq v) => g v e > Int Source #
Minimum degree of a graph
avgDegree :: (Hashable v, Eq v) => g v e > Double Source #
Average degree of a graph
density :: (Hashable v, Eq v) => g v e > Double Source #
Density of a graph  The ratio of the number of existing edges in the graph to the number of  posible edges
insertVertex :: (Hashable v, Eq v) => v > g v e > g v e Source #
Insert a vertex into a graph  If the graph already contains the vertex leave the graph untouched
insertVertices :: (Hashable v, Eq v) => [v] > g v e > g v e Source #
Insert a many vertices into a graph  New vertices are inserted and already contained vertices are left  untouched
containsEdgePair :: (Hashable v, Eq v) => g v e > (v, v) > Bool Source #
Tell if an edge exists in the graph
incidentEdgeTriples :: (Hashable v, Eq v) => g v e > v > [(v, v, e)] Source #
Retrieve the incident edges of a vertex
incidentEdgePairs :: (Hashable v, Eq v) => g v e > v > [(v, v)] Source #
Retrieve the incident edges of a vertex, ignoring its attributes
insertEdgeTriple :: (Hashable v, Eq v) => (v, v, e) > g v e > g v e Source #
Insert an edge into a graph  The involved vertices are inserted if don't exist. If the graph already  contains the edge, its attribute is updated
insertEdgeTriples :: (Hashable v, Eq v) => [(v, v, e)] > g v e > g v e Source #
Same as insertEdgeTriple
but for multiple edges
insertEdgePair :: (Hashable v, Eq v) => (v, v) > g v () > g v () Source #
Same as insertEdgeTriple
but insert edge pairs in graphs with
 attributeless edges
insertEdgePairs :: (Hashable v, Eq v) => [(v, v)] > g v () > g v () Source #
Same as insertEdgePair
for multiple edges
removeVertex :: (Hashable v, Eq v) => v > g v e > g v e Source #
Remove a vertex from a graph if present  Every edge incident to this vertex is also removed
removeVertices :: (Hashable v, Eq v) => [v] > g v e > g v e Source #
Same as removeVertex
but for multiple vertices
removeEdgePair :: (Hashable v, Eq v) => (v, v) > g v e > g v e Source #
Remove an edge from a graph if present  The involved vertices are left untouched
removeEdgePairs :: (Hashable v, Eq v) => [(v, v)] > g v e > g v e Source #
Same as removeEdgePair
but for multple edges
removeEdgePairAndVertices :: (Hashable v, Eq v) => (v, v) > g v e > g v e Source #
Remove the edge from a graph if present  The involved vertices are also removed
isSimple :: (Hashable v, Eq v) => g v e > Bool Source #
Tell if a graph is simple
 A graph is simple
if it has no loops
fromAdjacencyMatrix :: [[Int]] > Maybe (g Int ()) Source #
Generate a graph of Int vertices from an adjacency  square matrix
toAdjacencyMatrix :: g v e > [[Int]] Source #
Get the adjacency matrix representation of a grah
Undirected Edge with attribute of type e between to Vertices of type v
Edge v v e 
IsEdge Edge Source #  
(Eq v, Eq a) => Eq (Edge v a) Source #  To 
(Ord e, Ord v) => Ord (Edge v e) Source #  
(Read e, Read v) => Read (Edge v e) Source #  
(Show e, Show v) => Show (Edge v e) Source #  
Generic (Edge v e) Source #  
(Arbitrary v, Arbitrary e, Num v, Ord v) => Arbitrary (Edge v e) Source #  
(NFData v, NFData e) => NFData (Edge v e) Source #  
type Rep (Edge v e) Source #  
Directed Arc with attribute of type e between to Vertices of type v
Arc v v e 
IsEdge Arc Source #  
(Eq v, Eq a) => Eq (Arc v a) Source #  To 
(Ord e, Ord v) => Ord (Arc v e) Source #  
(Read e, Read v) => Read (Arc v e) Source #  
(Show e, Show v) => Show (Arc v e) Source #  
Generic (Arc v e) Source #  
(Arbitrary v, Arbitrary e, Num v, Ord v) => Arbitrary (Arc v e) Source #  
(NFData v, NFData e) => NFData (Arc v e) Source #  
type Rep (Arc v e) Source #  
(<>) :: Hashable v => v > v > Edge v () Source #
Construct an undirected Edge
between two vertices
toPair :: e v a > (v, v) Source #
Convert an edge to a pair discargind its attribute
toTriple :: e v a > (v, v, a) Source #
Convert an edge to a triple, where the 3rd element it's the edge  attribute
isLoop :: Eq v => e v a > Bool Source #
Tell if an edge is a loop
 An edge forms a loop
if both of its ends point to the same vertex
class Weighted a where Source #
Weighted Edge attributes  Useful for computing some algorithms on graphs
tripleToPair :: (a, b, c) > (a, b) Source #
Convert a triple to a pair by ignoring the third element
arbitraryEdge :: (Arbitrary v, Arbitrary e, Ord v, Num v) => (v > v > e > edge) > Gen edge Source #
Edges generator
type Links v e = HashMap v e Source #
Each vertex maps to a Links
value so it can poit to other vertices
insertLink :: (Hashable v, Eq v) => v > a > Links v a > Links v a Source #
Insert a link directed to *v* with attribute *a*  If the connnection already exists, the attribute is replaced
getLinks :: (Hashable v, Eq v) => v > HashMap v (Links v e) > Links v e Source #
Get the links for a given vertex
linksToArcs :: [(v, Links v a)] > [Arc v a] Source #
Get Arc
s from an association list of vertices and their links