Struct petgraph::graphmap::Ptr

pub struct Ptr<'b, T: 'b>(pub &'b T);

A reference that is hashed and compared by its pointer value.

Ptr is used for certain configurations of GraphMap, in particular in the combination where the node type for GraphMap is something of type for example Ptr(&Cell<T>), with the Cell<T> being TypedArena allocated.

Trait Implementations

impl<'b, T> Copy for Ptr<'b, T>

impl<'b, T> Ord for Ptr<'b, T>

fn cmp(&self, other: &Ptr<'b, T>) -> Ordering

Ptr is ordered by pointer value, i.e. an arbitrary but stable and total order.

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

Compares and returns the maximum of two values.

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

Compares and returns the minimum of two values.

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

🔬 This is a nightly-only experimental API. (clamp)

Restrict a value to a certain interval.

impl<'b, T> Eq for Ptr<'b, T>

impl<'b, T> Clone for Ptr<'b, T>

fn clone(&self) -> Self

Returns a copy of the value.

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

Performs copy-assignment from source.

impl<'b, T> PartialEq<Ptr<'b, T>> for Ptr<'b, T>

fn eq(&self, other: &Ptr<'b, T>) -> bool

Ptr compares by pointer equality, i.e if they point to the same value

#[must_use] fn ne(&self, other: &Rhs) -> bool

This method tests for !=.

impl<'b, T> PartialOrd<Ptr<'b, T>> for Ptr<'b, T>

fn partial_cmp(&self, other: &Ptr<'b, T>) -> Option<Ordering>

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

#[must_use] fn lt(&self, other: &Rhs) -> bool

This method tests less than (for self and other) and is used by the < operator.

#[must_use] fn le(&self, other: &Rhs) -> bool

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

#[must_use] fn gt(&self, other: &Rhs) -> bool

This method tests greater than (for self and other) and is used by the > operator.

#[must_use] fn ge(&self, other: &Rhs) -> bool

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

impl<'b, T> Hash for Ptr<'b, T>

fn hash<H: Hasher>(&self, st: &mut H)

Feeds this value into the given [Hasher].

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

Feeds a slice of this type into the given [Hasher].

impl<'b, T: Debug> Debug for Ptr<'b, T>

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

Formats the value using the given formatter.

impl<'b, T> Deref for Ptr<'b, T>

type Target = T

The resulting type after dereferencing.

fn deref(&self) -> &T

Dereferences the value.