pub struct Cursor<'a, T> where T: 'a, { /* fields omitted */ }
A cursor over a LinkedList.
A Cursor is like an iterator, except that it can freely seek back-and-forth.
Cursors always rest between two elements in the list, and index in a logically circular way. To accommodate this, there is a "ghost" non-element that yields None between the head and tail of the list.
When created, cursors start at the front of the list, or the "ghost" non-element if the list is empty.
impl<'a, T> Cursor<'a, T>[src]
pub fn index(&self) -> Option<usize>[src]
Returns the cursor position index within the LinkedList.
This returns None if the cursor is currently pointing to the "ghost" non-element.
pub fn move_next(&mut self)[src]
Moves the cursor to the next element of the LinkedList.
If the cursor is pointing to the "ghost" non-element then this will move it to the first element of the LinkedList. If it is pointing to the last element of the LinkedList then this will move it to the "ghost" non-element.
pub fn move_prev(&mut self)[src]
Moves the cursor to the previous element of the LinkedList.
If the cursor is pointing to the "ghost" non-element then this will move it to the last element of the LinkedList. If it is pointing to the first element of the LinkedList then this will move it to the "ghost" non-element.
pub fn current(&self) -> Option<&'a T>[src]
Returns a reference to the element that the cursor is currently pointing to.
This returns None if the cursor is currently pointing to the "ghost" non-element.
pub fn peek_next(&self) -> Option<&'a T>[src]
Returns a reference to the next element.
If the cursor is pointing to the "ghost" non-element then this returns the first element of the LinkedList. If it is pointing to the last element of the LinkedList then this returns None.
pub fn peek_prev(&self) -> Option<&'a T>[src]
Returns a reference to the previous element.
If the cursor is pointing to the "ghost" non-element then this returns the last element of the LinkedList. If it is pointing to the first element of the LinkedList then this returns None.
impl<'_, T> Clone for Cursor<'_, T>[src]
impl<'_, T> Debug for Cursor<'_, T> where
T: Debug, [src]
impl<'_, T> Send for Cursor<'_, T> where
T: Sync, [src]
impl<'_, T> Sync for Cursor<'_, T> where
T: Sync, [src]
impl<'a, T> RefUnwindSafe for Cursor<'a, T> where
T: RefUnwindSafe, impl<'a, T> Unpin for Cursor<'a, T>impl<'a, T> UnwindSafe for Cursor<'a, T> where
T: RefUnwindSafe, impl<T> Any for T where
T: 'static + ?Sized, [src]
impl<T> Borrow<T> for T where
T: ?Sized, [src]
fn borrow(&self) -> &TⓘNotable traits for &'_ mut F
impl<'_, F> Future for &'_ mut F where
F: Unpin + Future + ?Sized,
type Output = <F as Future>::Output;
impl<'_, I> Iterator for &'_ mut I where
I: Iterator + ?Sized,
type Item = <I as Iterator>::Item;
impl<R: Read + ?Sized, '_> Read for &'_ mut R
impl<W: Write + ?Sized, '_> Write for &'_ mut W
[src]
impl<T> BorrowMut<T> for T where
T: ?Sized, [src]
fn borrow_mut(&mut self) -> &mut TⓘNotable traits for &'_ mut F
impl<'_, F> Future for &'_ mut F where
F: Unpin + Future + ?Sized,
type Output = <F as Future>::Output;
impl<'_, I> Iterator for &'_ mut I where
I: Iterator + ?Sized,
type Item = <I as Iterator>::Item;
impl<R: Read + ?Sized, '_> Read for &'_ mut R
impl<W: Write + ?Sized, '_> Write for &'_ mut W
[src]
impl<T> From<T> for T[src]
impl<T, U> Into<U> for T where
U: From<T>, [src]
impl<T> ToOwned for T where
T: Clone, [src]
type Owned = TThe resulting type after obtaining ownership.
fn to_owned(&self) -> T[src]
fn clone_into(&self, target: &mut T)[src]
impl<T, U> TryFrom<U> for T where
U: Into<T>, [src]
type Error = InfallibleThe type returned in the event of a conversion error.
fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>[src]
impl<T, U> TryInto<U> for T where
U: TryFrom<T>, [src]
© 2010 The Rust Project Developers
Licensed under the Apache License, Version 2.0 or the MIT license, at your option.
https://doc.rust-lang.org/std/collections/linked_list/struct.Cursor.html