Struct PersistedLazyRefMut

pub struct PersistedLazyRefMut<'a, S, K, C>
where
    S: PersistedStore<K>,
    K: PersistedKey,
    K::Value: PartialEq,
    C: PersistedContainer<Value = K::Value>,
{ /* private fields */ }

A guard encompassing the lifespan of a mutable reference to a lazy container. The purpose of this is to save the value immediately after it is mutated. The save will only occur if the value actually changed. A copy of the previous value is saved before the mutable access, and compared after the access.

Trait Implementations

impl<'a, S, K, C> Debug for PersistedLazyRefMut<'a, S, K, C>

where S: PersistedStore<K>, K: PersistedKey, K::Value: PartialEq + Debug, C: PersistedContainer<Value = K::Value>, &'a mut PersistedLazy<S, K, C>: Debug,

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

Formats the value using the given formatter.

impl<'a, S, K, C> Deref for PersistedLazyRefMut<'a, S, K, C>

where S: PersistedStore<K>, K: PersistedKey, K::Value: PartialEq, C: PersistedContainer<Value = K::Value>,

type Target = C

The resulting type after dereferencing.

fn deref(&self) -> &Self::Target

Dereferences the value.

impl<'a, S, K, C> DerefMut for PersistedLazyRefMut<'a, S, K, C>

where S: PersistedStore<K>, K: PersistedKey, K::Value: PartialEq, C: PersistedContainer<Value = K::Value>,

fn deref_mut(&mut self) -> &mut Self::Target

Mutably dereferences the value.

impl<'a, S, K, C> Drop for PersistedLazyRefMut<'a, S, K, C>

where S: PersistedStore<K>, K: PersistedKey, K::Value: PartialEq, C: PersistedContainer<Value = K::Value>,

Save value after modification only if it changed

fn drop(&mut self)

Executes the destructor for this type.