Enum StateMut

pub enum StateMut<'a, T> {
    Empty,
    Head,
    Tail,
    Node(&'a mut T),
}

An enum to represent the state of a Cursor while allowing for mutation.

Variants

Empty

The cursor holds an empty list and therefore doesn’t point anywhere.

Head

The cursor is pointing to the ‘ghost’ element before the start of a list.

Tail

The cursor is pointing to the ‘ghost’ element after the end of a list.

Node(&'a mut T)

The cursor is pointing to a Node within the list, containing the mutably borrowed value.

Implementations

impl<'a, T> StateMut<'a, T>

pub const fn is_empty(&self) -> bool

Returns true if this value is of type Empty. Returns false otherwise

pub const fn is_head(&self) -> bool

Returns true if this value is of type Head. Returns false otherwise

pub const fn is_tail(&self) -> bool

Returns true if this value is of type Tail. Returns false otherwise

pub const fn is_node(&self) -> bool

Returns true if this value is of type Node. Returns false otherwise

Trait Implementations

impl<'a, T: Debug> Debug for StateMut<'a, T>

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl<'a, T: PartialEq> PartialEq for StateMut<'a, T>

fn eq(&self, other: &StateMut<'a, T>) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl<'a, T: Eq> Eq for StateMut<'a, T>

impl<'a, T> StructuralPartialEq for StateMut<'a, T>