Trait Node

pub trait Node {
    type Key;

    // Required methods
    fn prev(&self) -> Option<&Self::Key>;
    fn next(&self) -> Option<&Self::Key>;
    fn prev_mut<T: NodeToken>(&mut self) -> &mut Option<Self::Key>;
    fn next_mut<T: NodeToken>(&mut self) -> &mut Option<Self::Key>;
}

Trait for nodes that holds its previous and next key in KeyNodeList.

Required Associated Types

type Key

Key type of the current Node.

Required Methods

fn prev(&self) -> Option<&Self::Key>

Returns a reference to the previous key of the current node, or returns None if the current node is the first node in the list.

fn next(&self) -> Option<&Self::Key>

Returns a reference to the next key of the current node, or returns None if the current node is the last node in the list.

fn prev_mut<T: NodeToken>(&mut self) -> &mut Option<Self::Key>

Returns a mutable reference to the previous key of the current node so that KeyNodeList can update the order of the nodes.

fn next_mut<T: NodeToken>(&mut self) -> &mut Option<Self::Key>

Returns a mutable reference to the next key of the current node so that KeyNodeList can update the order of the nodes.

Dyn Compatibility

This trait is not dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety", so this trait is not object safe.

Implementors

impl<K, V> Node for ValueNode<K, V>

type Key = K