Struct Upserted 

pub struct Upserted<G: Guard<V>, V: Value> { /* private fields */ }

Guard that provides read-only access to both the old and new values of an atomic upsert operation, preventing both from being freed.

Retires the old value on drop, if it existed.

Implementations

impl<G, V> Upserted<G, V>

where G: Guard<V>, V: Value,

pub fn old(&self) -> Option<&V::Borrowed>

Return the old value before upserting.

pub fn new(&self) -> &V::Borrowed

Return the new value after upserting.

Trait Implementations

impl<G, V> Debug for Upserted<G, V>

where G: Guard<V>, V: Value, V::Borrowed: Debug,

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

Formats the value using the given formatter.

impl<G: Guard<V>, V: Value> Drop for Upserted<G, V>

fn drop(&mut self)

Executes the destructor for this type.

fn pin_drop(self: Pin<&mut Self>)

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

Execute the destructor for this type, but different to Drop::drop, it requires self to be pinned.