Trait linked_vector::CursorBase

pub trait CursorBase<T> {
    // Required methods
    fn get(&self) -> Option<&T>;
    fn get_mut(&mut self) -> Option<&mut T>;
    fn move_to(&mut self, handle: HNode) -> bool;
    fn move_next(&mut self) -> Option<HNode>;
    fn move_prev(&mut self) -> Option<HNode>;
    fn move_to_start(&mut self) -> Option<HNode>;
    fn move_to_end(&mut self) -> Option<HNode>;
    fn forward(&mut self, n: usize) -> Result<HNode, HNode>;
    fn backward(&mut self, n: usize) -> Result<HNode, HNode>;
}

A cursor is a position within a linked vector. It can be used to traverse the list in either direction, and to access the element at the current position.

Required Methods

fn get(&self) -> Option<&T>

Returns a reference to the element at the cursor’s current position.

fn get_mut(&mut self) -> Option<&mut T>

Returns a mutable reference to the element at the cursor’s current position.

fn move_to(&mut self, handle: HNode) -> bool

Moves the cursor to the specified handle. Returns true if the cursor was moved, false if the handle was invalid.

fn move_next(&mut self) -> Option<HNode>

Moves the cursor to the next element. Returns the handle of the next element if the cursor was moved, None if the cursor was already at the end of the list.

fn move_prev(&mut self) -> Option<HNode>

Moves the cursor to the previous element. Returns the handle of the previous element if the cursor was moved, None if the cursor was already at the start of the list.

fn move_to_start(&mut self) -> Option<HNode>

Moves the cursor to the start of the list. Returns the handle of the first element if the cursor was moved, None if the list is empty.

fn move_to_end(&mut self) -> Option<HNode>

Moves the cursor to the end of the list. Returns the handle of the last element if the cursor was moved, None if the list is empty.

fn forward(&mut self, n: usize) -> Result<HNode, HNode>

Moves the cursor forward by the specified number of elements. Returns the handle of the element at the new position if the cursor was moved, Err(handle) if the cursor was already at the end of the list.

fn backward(&mut self, n: usize) -> Result<HNode, HNode>

Moves the cursor backward by the specified number of elements. Returns the handle of the element at the new position if the cursor was moved, Err(handle) if the cursor was already at the start of the list.

Implementors

impl<'a, T> CursorBase<T> for Cursor<'a, T>

impl<'a, T> CursorBase<T> for CursorMut<'a, T>