Struct RcBorrow 

pub struct RcBorrow<'a, T: ?Sized> { /* private fields */ }

Borrowed version of Rc.

This type is guaranteed to have the same repr as &T.

Implementations

impl<'a, T: ?Sized> RcBorrow<'a, T>

pub fn upgrade(this: Self) -> Rc<T>

Convert this borrowed pointer into an owned pointer.

pub fn to_weak(this: Self) -> Weak<T>

Convert this borrowed pointer into a weak pointer.

pub fn downgrade(this: Self) -> &'a T

Convert this borrowed pointer into a standard reference.

This gives you a long-lived reference, whereas dereferencing gives a temporary borrow.

pub fn strong_count(this: Self) -> usize

Get the number of strong owning pointers to this allocation.

pub fn weak_count(this: Self) -> usize

Get the number of weak owning pointers to this allocation.

pub fn into_raw(this: Self) -> *const T

Get a raw pointer that can be used with from_raw.

pub unsafe fn from_raw(ptr: *const T) -> Self

Construct a new RcBorrow from a raw pointer.

Safety

The raw pointer must have been previously returned by a call to RcBorrow<U>::into_raw or Rc<U>::as_raw where U must have the same size and alignment as T. This is trivially true if U is T. Note that if U is not T, this is a pointer cast (transmute) between the two types, and the types must be transmute-compatible.

Trait Implementations

impl<T, U: ?Sized> AsRef<U> for RcBorrow<'_, T>

where T: AsRef<U> + ?Sized,

fn as_ref(&self) -> &U

Converts this type into a shared reference of the (usually inferred) input type.

impl<T> Binary for RcBorrow<'_, T>

where T: Binary + ?Sized,

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

Formats the value using the given formatter.

impl<T: ?Sized> Borrow<T> for RcBorrow<'_, T>

fn borrow(&self) -> &T

Immutably borrows from an owned value.

impl<T: ?Sized> Clone for RcBorrow<'_, T>

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl<T> Debug for RcBorrow<'_, T>

where T: Debug + ?Sized,

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

Formats the value using the given formatter.

impl<T: ?Sized> Deref for RcBorrow<'_, T>

type Target = T

The resulting type after dereferencing.

fn deref(&self) -> &T

Dereferences the value.

impl<T> Display for RcBorrow<'_, T>

where T: Display + ?Sized,

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

Formats the value using the given formatter.

impl<T> ErasablePtr for RcBorrow<'_, T>

where T: Erasable + ?Sized,

fn erase(this: Self) -> ErasedPtr

Turn this erasable pointer into an erased pointer.

unsafe fn unerase(this: ErasedPtr) -> Self

Unerase this erased pointer.

impl<'a, T: ?Sized> From<&'a Rc<T>> for RcBorrow<'a, T>

fn from(v: &'a Rc<T>) -> RcBorrow<'a, T>

Converts to this type from the input type.

impl<T> Hash for RcBorrow<'_, T>

where T: Hash + ?Sized,

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> LowerExp for RcBorrow<'_, T>

where T: LowerExp + ?Sized,

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

Formats the value using the given formatter.

impl<T> LowerHex for RcBorrow<'_, T>

where T: LowerHex + ?Sized,

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

Formats the value using the given formatter.

impl<T> Octal for RcBorrow<'_, T>

where T: Octal + ?Sized,

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

Formats the value using the given formatter.

impl<T> Ord for RcBorrow<'_, T>

where T: Ord,

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, O> PartialEq<O> for RcBorrow<'_, T>

where O: Deref, T: PartialEq<O::Target> + ?Sized,

fn eq(&self, other: &O) -> 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, O> PartialOrd<O> for RcBorrow<'_, T>

where O: Deref, T: PartialOrd<O::Target> + ?Sized,

fn partial_cmp(&self, other: &O) -> 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> Pointer for RcBorrow<'_, T>

where T: Pointer + ?Sized,

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

Formats the value using the given formatter.

impl<T> ToSocketAddrs for RcBorrow<'_, T>

where T: ToSocketAddrs + ?Sized,

type Iter = <T as ToSocketAddrs>::Iter

Returned iterator over socket addresses which this type may correspond to.

fn to_socket_addrs(&self) -> Result<T::Iter>

Converts this object to an iterator of resolved SocketAddrs.

impl<T> UpperExp for RcBorrow<'_, T>

where T: UpperExp + ?Sized,

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

Formats the value using the given formatter.

impl<T> UpperHex for RcBorrow<'_, T>

where T: UpperHex + ?Sized,

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

Formats the value using the given formatter.

impl<T: ?Sized> Copy for RcBorrow<'_, T>

impl<T> Eq for RcBorrow<'_, T>

where T: Eq + ?Sized,

impl<'a, T: ?Sized> Send for RcBorrow<'a, T>

where &'a Rc<T>: Send,

impl<'a, T: ?Sized> Sync for RcBorrow<'a, T>

where &'a Rc<T>: Sync,

impl<T: ?Sized> Unpin for RcBorrow<'_, T>

impl<T> UnwindSafe for RcBorrow<'_, T>

where T: RefUnwindSafe + ?Sized,