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Guard

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Struct Guard 

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pub struct Guard<'a, T: Serialize> { /* private fields */ }
Expand description

An RAII editing guard returned by Producer::lock.

Holds the producer’s lock for its lifetime and derefs to the current value. Mutating it through DerefMut marks it dirty, and dropping a dirty guard publishes the edited value.

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impl<T: Serialize> Deref for Guard<'_, T>

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type Target = T

The resulting type after dereferencing.
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fn deref(&self) -> &T

Dereferences the value.
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impl<T: Serialize> DerefMut for Guard<'_, T>

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

Mutably dereferences the value.
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impl<T: Serialize> Drop for Guard<'_, T>

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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

Auto Trait Implementations§

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impl<'a, T> !Send for Guard<'a, T>

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impl<'a, T> Freeze for Guard<'a, T>
where T: Freeze,

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impl<'a, T> RefUnwindSafe for Guard<'a, T>
where T: RefUnwindSafe,

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impl<'a, T> Sync for Guard<'a, T>
where T: Sync,

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impl<'a, T> Unpin for Guard<'a, T>
where T: Unpin,

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impl<'a, T> UnsafeUnpin for Guard<'a, T>
where T: UnsafeUnpin,

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impl<'a, T> UnwindSafe for Guard<'a, T>
where T: UnwindSafe,

Blanket Implementations§

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

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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> MaybeSync for T
where T: Sync,

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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 = Infallible> + ?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> RngCore for R
where R: Rng,

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impl<R> RngExt for R
where R: Rng + ?Sized,

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fn random<T>(&mut self) -> T
where StandardUniform: Distribution<T>,

Return a random value via the StandardUniform distribution. Read more
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fn random_iter<T>(self) -> Iter<StandardUniform, Self, T>
where Self: Sized, StandardUniform: Distribution<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<R> TryCryptoRng for R
where R: DerefMut, <R as Deref>::Target: TryCryptoRng,

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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.
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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<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