ConcurrentInitializer

concurrent_initializer

Struct ConcurrentInitializer 

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pub struct ConcurrentInitializer<K, V, S = RandomState> { /* private fields */ }

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impl<K, V> ConcurrentInitializer<K, V>
where K: Eq + Hash, V: Clone,

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pub fn new() -> Self

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impl<K, V, S> ConcurrentInitializer<K, V, S>
where K: Eq + Hash, V: Clone, S: BuildHasher,

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pub fn with_hasher(build_hasher: S) -> Self

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pub fn try_get_or_init<E>( &self, key: &Arc<K>, get: impl FnMut() -> Result<Option<V>, E>, init: impl FnOnce() -> Result<V, E>, ) -> InitResult<V, E>
where E: Send + Sync + 'static,

§Panics

Panics if the init closure has been panicked.

Auto Trait Implementations§

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impl<K, V, S = RandomState> !Freeze for ConcurrentInitializer<K, V, S>

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impl<K, V, S = RandomState> !RefUnwindSafe for ConcurrentInitializer<K, V, S>

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impl<K, V, S> Send for ConcurrentInitializer<K, V, S>
where S: Send, K: Sync + Send, V: Send + Sync,

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impl<K, V, S> Sync for ConcurrentInitializer<K, V, S>
where S: Sync, K: Sync + Send, V: Send + Sync,

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impl<K, V, S> Unpin for ConcurrentInitializer<K, V, S>
where S: Unpin,

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impl<K, V, S = RandomState> !UnwindSafe for ConcurrentInitializer<K, V, S>

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impl<T> Any for T
where T: 'static + ?Sized,

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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impl<T> Borrow<T> for T
where T: ?Sized,

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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impl<T> BorrowMut<T> for T
where T: ?Sized,

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fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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impl<T, U> Into<U> for T
where U: From<T>,

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fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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impl<T> Pointable for T

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const ALIGN: usize

The alignment of pointer.
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type Init = T

The type for initializers.
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unsafe fn init(init: <T as Pointable>::Init) -> usize

Initializes a with the given initializer. Read more
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unsafe fn deref<'a>(ptr: usize) -> &'a T

Dereferences the given pointer. Read more
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unsafe fn deref_mut<'a>(ptr: usize) -> &'a mut T

Mutably dereferences the given pointer. Read more
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unsafe fn drop(ptr: usize)

Drops the object pointed to by the given pointer. Read more
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impl<T, U> TryFrom<U> for T
where U: Into<T>,

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type Error = Infallible

The type returned in the event of a conversion error.
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fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
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impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

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type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.