fgl-5.4.2.0: Martin Erwig's Functional Graph Library Source code Contents Index

Data.Graph.Inductive.Basic

Contents Graph Operations Filter Operations Predicates and Classifications Tree Operations

Description

Basic Graph Algorithms

Synopsis

grev :: DynGraph gr => gr a b -> gr a b undir :: (Eq b, DynGraph gr) => gr a b -> gr a b unlab :: DynGraph gr => gr a b -> gr () () gsel :: Graph gr => (Context a b -> Bool) -> gr a b -> [Context a b] gfold :: Graph gr => (Context a b -> [Node]) -> (Context a b -> c -> d) -> (Maybe d -> c -> c, c) -> [Node] -> gr a b -> c efilter :: DynGraph gr => (LEdge b -> Bool) -> gr a b -> gr a b elfilter :: DynGraph gr => (b -> Bool) -> gr a b -> gr a b hasLoop :: Graph gr => gr a b -> Bool isSimple :: Graph gr => gr a b -> Bool postorder :: Tree a -> [a] postorderF :: [Tree a] -> [a] preorder :: Tree a -> [a] preorderF :: [Tree a] -> [a]

Graph Operations

grev :: DynGraph gr => gr a b -> gr a b Source

Reverse the direction of all edges.

undir :: (Eq b, DynGraph gr) => gr a b -> gr a b Source

Make the graph undirected, i.e. for every edge from A to B, there exists an edge from B to A.

unlab :: DynGraph gr => gr a b -> gr () () Source

Remove all labels.

gsel :: Graph gr => (Context a b -> Bool) -> gr a b -> [Context a b] Source

Return all Contexts for which the given function returns True.

gfold Source

:: Graph gr => (Context a b -> [Node]) direction of fold -> (Context a b -> c -> d) depth aggregation -> (Maybe d -> c -> c, c) breadth/level aggregation -> [Node] -> gr a b -> c Directed graph fold.

Filter Operations

efilter :: DynGraph gr => (LEdge b -> Bool) -> gr a b -> gr a b Source

Filter based on edge property.

elfilter :: DynGraph gr => (b -> Bool) -> gr a b -> gr a b Source

Filter based on edge label property.

Predicates and Classifications

hasLoop :: Graph gr => gr a b -> Bool Source

True if the graph has any edges of the form (A, A).

isSimple :: Graph gr => gr a b -> Bool Source

The inverse of hasLoop.

Tree Operations

postorder :: Tree a -> [a] Source

Flatten a Tree, returning the elements in post-order.

postorderF :: [Tree a] -> [a] Source

Flatten multiple Trees in post-order.

preorder :: Tree a -> [a] Source

Flatten a Tree, returning the elements in pre-order. Equivalent to flatten in Tree.

preorderF :: [Tree a] -> [a] Source

Flatten multiple Trees in pre-order.

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