[−][src]Trait btree_dag::RemoveVertex

pub trait RemoveVertex<T> where
    T: Ord, {
    type Error;
    fn remove_vertex(&mut self, x: T) -> Result<(), Self::Error>;
}

RemoveVertex removes the vertex x, if it is there.

Example

extern crate alloc;
use alloc::collections::btree_set::BTreeSet;
use btree_dag::{BTreeDag, AddVertex, AddEdge, RemoveVertex, GetVertexValue, Vertices};
let mut dag: BTreeDag<String> = BTreeDag::new();
dag.add_vertex(String::from("origin"));
dag.add_vertex(String::from("destination"));
dag.add_edge(String::from("origin"), String::from("destination"));


dag.remove_vertex(String::from("destination"));
assert_eq!(dag.vertices().len(), 1);

// Note: removing a vertex will also cascade delete any incident edges.
assert_eq!(dag.get_vertex_value(String::from("origin")).unwrap().len(), 0);

Associated Types

type Error[src]

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Required methods

fn remove_vertex(&mut self, x: T) -> Result<(), Self::Error>[src]

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Implementors

impl<T> RemoveVertex<T> for BTreeDag<T> where
    T: Ord + Clone, [src]

When you remove a vertex, you should ensure there are no dangling edges.

type Error = Error

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