Struct zng_app_context::MappedRwLockWriteGuardOwned

pub struct MappedRwLockWriteGuardOwned<T: 'static, O: 'static> { /* private fields */ }

Represents a write guard for an Arc<RwLock<T>> that owns a reference to it, mapped from another read guard.

Implementations

impl<T, O> MappedRwLockWriteGuardOwned<T, O>

pub fn map<O2>( guard: Self, map: impl FnOnce(&mut O) -> &mut O2, ) -> MappedRwLockWriteGuardOwned<T, O2>

Make a new MappedRwLockWriteGuardOwned for a component of the locked data.

This is an associated function that needs to be used as MappedRwLockWriteGuardOwned::map(...). A method would interfere with methods of the same name on the contents of the locked data.

Trait Implementations

impl<T, O> Deref for MappedRwLockWriteGuardOwned<T, O>

type Target = O

The resulting type after dereferencing.

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

Dereferences the value.

impl<T, O> DerefMut for MappedRwLockWriteGuardOwned<T, O>

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

Mutably dereferences the value.