Enum XRef

pub enum XRef<'a, T> {
    Borrowed(&'a T),
    Ref(Ref<'a, T>),
    Owned(T),
}

Kind of like Cow, but might also be a Ref (from a RefCell) Also, does not use ToOwned. This is because the main point of an XRef is not to Copy On Write, but to either hold an owned value or a reference to a value

Variants

Borrowed(&'a T)

Ref(Ref<'a, T>)

Owned(T)

Implementations

impl<'a, T> XRef<'a, T>

pub fn to_ref(&self) -> &T

impl<'a, T> XRef<'a, T>

where T: Clone,

pub fn to_mut(&mut self) -> &mut T

Acquires a mutable reference to the owned form of the data. Clones the data if it is not already owned.

pub fn into_owned(self) -> T

Extracts the owned data. Clones the data if it is not already owned.

Trait Implementations

impl<'a, T> AsRef<T> for XRef<'a, T>

fn as_ref(&self) -> &T

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

impl<'a, T> Borrow<T> for XRef<'a, T>

fn borrow(&self) -> &T

Immutably borrows from an owned value.

impl<'a, T> Clone for XRef<'a, T>

where T: Clone,

fn clone(&self) -> XRef<'a, T>

Returns a copy of the value.

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

Performs copy-assignment from source.

impl<'a, T> Debug for XRef<'a, T>

where T: Debug,

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

Formats the value using the given formatter.

impl<'a, T> Default for XRef<'a, T>

where T: Default,

fn default() -> XRef<'a, T>

Returns the “default value” for a type.

impl<'a, T> Display for XRef<'a, T>

where T: Display,

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

Formats the value using the given formatter.

impl<'a, T> Deref for XRef<'a, T>

type Target = T

The resulting type after dereferencing.

fn deref(&self) -> &T

Dereferences the value.