XDag

A simple DAG (Directed Acyclic Graph) library

Note

This lib just provides a data-structure to store DAG with checking. It doesn't contain any algorithm about DAG.

Details

XDAG stores DAG by HashMap. it CANNOT ensure the order of children and edges

Docs

docs.rs

Examples

// Create a new DAG
let mut dag = Dag::new();
// insert 3 nodes with data '()'
dag.insert_node(2, ());
dag.insert_node(4, ());
dag.insert_node(3, ());
// insert 2 edges with data '()'
dag.insert_edge(2, 3, ()).unwrap();
dag.insert_edge(2, 4, ()).unwrap();
// Get all roots and leaves in DAG
let roots = dag.roots().map(|(id, _)| id).collect::<Vec<_>>();
let leaves = dag.leaves().map(|(id, _)| id).collect::<Vec<_>>();

assert_eq!(&roots, &[2]);
for id in [3, 4].iter() {
    assert!(leaves.contains(id))
}