Struct Nw

pub struct Nw<T: ?Sized>(/* private fields */);

Weak reference to node.

Implementations

impl<T> Nw<T>

pub fn new() -> Self

Create new empty instance.

Calling upgrade on the return value always gives None.

impl<T: ?Sized> Nw<T>

pub fn as_base(base: &Weak<T>) -> &Self

Create reference from base object.

pub fn from_base(base: Weak<T>) -> Self

Create instance from base object.

pub fn base(&self) -> &Weak<T>

Get base object.

pub fn upgrade(&self) -> Option<Nr<T>>

Create strong pointer to this node.

Returns None if the inner value has since been dropped.

pub fn strong_count(&self) -> usize

Get the number of strong pointer to this node.

pub fn weak_count(&self) -> usize

Get the number of weak pointer to this node.

Trait Implementations

impl<T: ?Sized> Clone for Nw<T>

fn clone(&self) -> Self

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl<T: Debug + ?Sized> Debug for Nw<T>

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

Formats the value using the given formatter.

impl<T: Default + ?Sized> Default for Nw<T>

fn default() -> Nw<T>

Returns the “default value” for a type.

impl<T: ?Sized> Hash for Nw<T>

fn hash<H: Hasher>(&self, state: &mut H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl<T: ?Sized> Ord for Nw<T>

fn cmp(&self, other: &Self) -> Ordering

This method returns an Ordering between self and other.

fn max(self, other: Self) -> Self

where Self: Sized,

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Self

where Self: Sized,

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Self

where Self: Sized,

Restrict a value to a certain interval.

impl<T: ?Sized> PartialEq for Nw<T>

fn eq(&self, other: &Self) -> 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<T: ?Sized> PartialOrd for Nw<T>

fn partial_cmp(&self, other: &Self) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

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

Tests less than (for self and other) and is used by the < operator.

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

Tests less than or equal to (for self and other) and is used by the <= operator.

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

Tests greater than (for self and other) and is used by the > operator.

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

Tests greater than or equal to (for self and other) and is used by the >= operator.

impl<T: ?Sized> Eq for Nw<T>