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LeaseHandle

Struct LeaseHandle 

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pub struct LeaseHandle<T>
where T: Default + Reclaim,
{ /* private fields */ }
Expand description

Handle to a pooled item. Reclaims the value and frees its slot when dropped.

The pointee is owned by the LeasePool, which never removes items, so it outlives every handle. An atomic leased flag keeps the reference unique for the handle’s lifetime.

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impl<T> Debug for LeaseHandle<T>
where T: Default + Reclaim,

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

Formats the value using the given formatter. Read more
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impl<T> Deref for LeaseHandle<T>
where T: Default + Reclaim,

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type Target = T

The resulting type after dereferencing.
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fn deref(&self) -> &<LeaseHandle<T> as Deref>::Target

Dereferences the value.
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impl<T> DerefMut for LeaseHandle<T>
where T: Default + Reclaim,

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fn deref_mut(&mut self) -> &mut <LeaseHandle<T> as Deref>::Target

Mutably dereferences the value.
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impl<T> Drop for LeaseHandle<T>
where T: Default + Reclaim,

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fn drop(&mut self)

Executes the destructor for this type. Read more
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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. Read more
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impl<T> Send for LeaseHandle<T>
where T: Default + Reclaim,

Auto Trait Implementations§

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impl<T> !RefUnwindSafe for LeaseHandle<T>

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impl<T> !Sync for LeaseHandle<T>

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impl<T> !UnwindSafe for LeaseHandle<T>

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impl<T> Freeze for LeaseHandle<T>
where *const LeaseSlot<T>: Freeze,

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impl<T> Unpin for LeaseHandle<T>
where *const LeaseSlot<T>: Unpin,

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impl<T> UnsafeUnpin for LeaseHandle<T>
where *const LeaseSlot<T>: UnsafeUnpin,

Blanket Implementations§

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impl<T, A, P> Access<T> for P
where A: Access<T> + ?Sized, P: Deref<Target = A>,

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type Guard = <A as Access<T>>::Guard

A guard object containing the value and keeping it alive. Read more
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fn load(&self) -> <P as Access<T>>::Guard

The loading method. Read more
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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<ST, DT> CastableFrom<ST, Initialized, Initialized> for DT
where ST: ?Sized, DT: ?Sized,

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impl<ST, DT> CastableFrom<ST, Uninit, Uninit> for DT
where ST: ?Sized, DT: ?Sized,

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impl<R> CryptoRng for R
where R: TryCryptoRng<Error = !> + ?Sized,

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impl<T> CryptoRng for T
where T: DerefMut, <T as Deref>::Target: CryptoRng,

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impl<T> Downcast for T
where T: Any,

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fn into_any(self: Box<T>) -> Box<dyn Any>

Converts Box<dyn Trait> (where Trait: Downcast) to Box<dyn Any>, which can then be downcast into Box<dyn ConcreteType> where ConcreteType implements Trait.
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fn into_any_rc(self: Rc<T>) -> Rc<dyn Any>

Converts Rc<Trait> (where Trait: Downcast) to Rc<Any>, which can then be further downcast into Rc<ConcreteType> where ConcreteType implements Trait.
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fn as_any(&self) -> &(dyn Any + 'static)

Converts &Trait (where Trait: Downcast) to &Any. This is needed since Rust cannot generate &Any’s vtable from &Trait’s.
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fn as_any_mut(&mut self) -> &mut (dyn Any + 'static)

Converts &mut Trait (where Trait: Downcast) to &Any. This is needed since Rust cannot generate &mut Any’s vtable from &mut Trait’s.
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impl<T> DowncastSend for T
where T: Any + Send,

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fn into_any_send(self: Box<T>) -> Box<dyn Any + Send>

Converts Box<Trait> (where Trait: DowncastSend) to Box<dyn Any + Send>, which can then be downcast into Box<ConcreteType> where ConcreteType implements Trait.
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impl<T, A> DynAccess<T> for A
where A: Access<T>, <A as Access<T>>::Guard: 'static,

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fn load(&self) -> DynGuard<T>

The equivalent of Access::load.
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impl<T> ErasedDestructor for T
where T: 'static,

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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> Instrument for T

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fn instrument(self, span: Span) -> Instrumented<Self> ⓘ

Instruments this type with the provided Span, returning an Instrumented wrapper. Read more
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fn in_current_span(self) -> Instrumented<Self> ⓘ

Instruments this type with the current Span, returning an Instrumented wrapper. Read more
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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> IntoComptime for T

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fn comptime(self) -> Self

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impl<T> IntoEither for T

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fn into_either(self, into_left: bool) -> Either<Self, Self> ⓘ

Converts self into a Left variant of Either<Self, Self> if into_left is true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more
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fn into_either_with<F>(self, into_left: F) -> Either<Self, Self> ⓘ
where F: FnOnce(&Self) -> bool,

Converts self into a Left variant of Either<Self, Self> if into_left(&self) returns true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more
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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> Read<Exclusive, BecauseExclusive> for T
where T: ?Sized,

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impl<P, T> Receiver for P
where P: Deref<Target = T> + ?Sized, T: ?Sized,

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type Target = T

🔬This is a nightly-only experimental API. (arbitrary_self_types)
The target type on which the method may be called.
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impl<R> Rng for R
where R: TryRng<Error = !> + ?Sized,

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fn next_u32(&mut self) -> u32

Return the next random u32.
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fn next_u64(&mut self) -> u64

Return the next random u64.
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fn fill_bytes(&mut self, dst: &mut [u8])

Fill dest with random data. Read more
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impl<R> Rng for R
where R: RngCore + ?Sized,

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fn random<T>(&mut self) -> T

Return a random value via the StandardUniform distribution. Read more
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fn random_iter<T>(self) -> Iter<StandardUniform, Self, T> ⓘ

Return an iterator over random variates Read more
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fn random_range<T, R>(&mut self, range: R) -> T
where T: SampleUniform, R: SampleRange<T>,

Generate a random value in the given range. Read more
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fn random_bool(&mut self, p: f64) -> bool

Return a bool with a probability p of being true. Read more
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fn random_ratio(&mut self, numerator: u32, denominator: u32) -> bool

Return a bool with a probability of numerator/denominator of being true. Read more
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fn sample<T, D>(&mut self, distr: D) -> T
where D: Distribution<T>,

Sample a new value, using the given distribution. Read more
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fn sample_iter<T, D>(self, distr: D) -> Iter<D, Self, T> ⓘ
where D: Distribution<T>, Self: Sized,

Create an iterator that generates values using the given distribution. Read more
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fn fill<T>(&mut self, dest: &mut T)
where T: Fill + ?Sized,

Fill any type implementing Fill with random data Read more
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fn gen<T>(&mut self) -> T

👎Deprecated since 0.9.0:

Renamed to random to avoid conflict with the new gen keyword in Rust 2024.

Alias for Rng::random.
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fn gen_range<T, R>(&mut self, range: R) -> T
where T: SampleUniform, R: SampleRange<T>,

👎Deprecated since 0.9.0:

Renamed to random_range

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fn gen_bool(&mut self, p: f64) -> bool

👎Deprecated since 0.9.0:

Renamed to random_bool

Alias for Rng::random_bool.
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fn gen_ratio(&mut self, numerator: u32, denominator: u32) -> bool

👎Deprecated since 0.9.0:

Renamed to random_ratio

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impl<R> RngCore for R
where R: Rng,

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impl<T> RngCore for T
where T: DerefMut, <T as Deref>::Target: RngCore,

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fn next_u32(&mut self) -> u32

Return the next random u32. Read more
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fn next_u64(&mut self) -> u64

Return the next random u64. Read more
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fn fill_bytes(&mut self, dst: &mut [u8])

Fill dest with random data. Read more
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impl<R> RngExt for R
where R: Rng + ?Sized,

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fn random<T>(&mut self) -> T

Return a random value via the StandardUniform distribution. Read more
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fn random_iter<T>(self) -> Iter<StandardUniform, Self, T> ⓘ

Return an iterator over random variates Read more
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fn random_range<T, R>(&mut self, range: R) -> T
where T: SampleUniform, R: SampleRange<T>,

Generate a random value in the given range. Read more
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fn random_bool(&mut self, p: f64) -> bool

Return a bool with a probability p of being true. Read more
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fn random_ratio(&mut self, numerator: u32, denominator: u32) -> bool

Return a bool with a probability of numerator/denominator of being true. Read more
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fn sample<T, D>(&mut self, distr: D) -> T
where D: Distribution<T>,

Sample a new value, using the given distribution. Read more
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fn sample_iter<T, D>(self, distr: D) -> Iter<D, Self, T> ⓘ
where D: Distribution<T>, Self: Sized,

Create an iterator that generates values using the given distribution. Read more
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fn fill<T>(&mut self, dest: &mut [T])
where T: Fill,

Fill any type implementing Fill with random data Read more
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impl<T> Same for T

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type Output = T

Should always be Self
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impl<R> TryCryptoRng for R
where R: DerefMut, <R as Deref>::Target: TryCryptoRng,

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impl<R> TryCryptoRng for R
where R: CryptoRng + ?Sized,

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

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type Error = !

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

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.
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impl<R> TryRng for R
where R: DerefMut, <R as Deref>::Target: TryRng,

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type Error = <<R as Deref>::Target as TryRng>::Error

The type returned in the event of a RNG error. Read more
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fn try_next_u32(&mut self) -> Result<u32, <R as TryRng>::Error>

Return the next random u32.
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fn try_next_u64(&mut self) -> Result<u64, <R as TryRng>::Error>

Return the next random u64.
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fn try_fill_bytes(&mut self, dst: &mut [u8]) -> Result<(), <R as TryRng>::Error>

Fill dst entirely with random data.
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impl<R> TryRngCore for R
where R: TryRng,

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type Error = <R as TryRng>::Error

👎Deprecated since 0.10.0:

use TryRng instead

Error type.
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impl<R> TryRngCore for R
where R: RngCore + ?Sized,

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type Error = !

The type returned in the event of a RNG error.
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fn try_next_u32(&mut self) -> Result<u32, <R as TryRngCore>::Error>

Return the next random u32.
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fn try_next_u64(&mut self) -> Result<u64, <R as TryRngCore>::Error>

Return the next random u64.
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fn try_fill_bytes( &mut self, dst: &mut [u8], ) -> Result<(), <R as TryRngCore>::Error>

Fill dest entirely with random data.
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fn unwrap_err(self) -> UnwrapErr<Self>
where Self: Sized,

Wrap RNG with the UnwrapErr wrapper.
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fn unwrap_mut(&mut self) -> UnwrapMut<'_, Self>

Wrap RNG with the UnwrapMut wrapper.
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fn read_adapter(&mut self) -> RngReadAdapter<'_, Self> ⓘ
where Self: Sized,

Convert an RngCore to a RngReadAdapter.
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impl<V, T> VZip<V> for T
where V: MultiLane<T>,

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fn vzip(self) -> V

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impl<T> WithSubscriber for T

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fn with_subscriber<S>(self, subscriber: S) -> WithDispatch<Self> ⓘ
where S: Into<Dispatch>,

Attaches the provided Subscriber to this type, returning a WithDispatch wrapper. Read more
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fn with_current_subscriber(self) -> WithDispatch<Self> ⓘ

Attaches the current default Subscriber to this type, returning a WithDispatch wrapper. Read more