PeekMut

Struct PeekMut 

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pub struct PeekMut<'a, T, A = Global>
where A: Allocator,
{ /* private fields */ }
๐Ÿ”ฌThis is a nightly-only experimental API. (vec_peek_mut)
Expand description

Structure wrapping a mutable reference to the last item in a Vec.

This struct is created by the peek_mut method on Vec. See its documentation for more.

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impl<'a, T, A> PeekMut<'a, T, A>
where A: Allocator,

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pub fn pop(this: PeekMut<'a, T, A>) -> T

๐Ÿ”ฌThis is a nightly-only experimental API. (vec_peek_mut)

Removes the peeked value from the vector and returns it.

Trait Implementationsยง

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impl<T, A> Debug for PeekMut<'_, T, A>
where T: Debug, A: Allocator,

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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<'a, T, A> Deref for PeekMut<'a, T, A>
where A: Allocator,

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type Target = T

The resulting type after dereferencing.
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fn deref(&self) -> &<PeekMut<'a, T, A> as Deref>::Target

Dereferences the value.
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impl<'a, T, A> DerefMut for PeekMut<'a, T, A>
where A: Allocator,

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fn deref_mut(&mut self) -> &mut <PeekMut<'a, T, A> as Deref>::Target

Mutably dereferences the value.

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impl<'a, T, A> Freeze for PeekMut<'a, T, A>

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impl<'a, T, A> RefUnwindSafe for PeekMut<'a, T, A>

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impl<'a, T, A> Send for PeekMut<'a, T, A>
where A: Send, T: Send,

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impl<'a, T, A> Sync for PeekMut<'a, T, A>
where A: Sync, T: Sync,

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impl<'a, T, A> Unpin for PeekMut<'a, T, A>

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impl<'a, T, A = Global> !UnwindSafe for PeekMut<'a, T, A>

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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, U> AsBindGroupShaderType<U> for T
where U: ShaderType, &'a T: for<'a> Into<U>,

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fn as_bind_group_shader_type(&self, _images: &RenderAssets<GpuImage>) -> U

Return the T ShaderType for self. When used in AsBindGroup derives, it is safe to assume that all images in self exist.
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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, C, D> Curve<T> for D
where C: Curve<T> + ?Sized, D: Deref<Target = C>,

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fn domain(&self) -> Interval

The interval over which this curve is parametrized. Read more
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fn sample_unchecked(&self, t: f32) -> T

Sample a point on this curve at the parameter value t, extracting the associated value. This is the unchecked version of sampling, which should only be used if the sample time t is already known to lie within the curveโ€™s domain. Read more
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fn sample(&self, t: f32) -> Option<T>

Sample a point on this curve at the parameter value t, returning None if the point is outside of the curveโ€™s domain.
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fn sample_clamped(&self, t: f32) -> T

Sample a point on this curve at the parameter value t, clamping t to lie inside the domain of the curve.
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impl<C, T> CurveExt<T> for C
where C: Curve<T>,

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fn sample_iter( &self, iter: impl IntoIterator<Item = f32>, ) -> impl Iterator<Item = Option<T>>

Sample a collection of n >= 0 points on this curve at the parameter values t_n, returning None if the point is outside of the curveโ€™s domain. Read more
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fn sample_iter_unchecked( &self, iter: impl IntoIterator<Item = f32>, ) -> impl Iterator<Item = T>

Sample a collection of n >= 0 points on this curve at the parameter values t_n, extracting the associated values. This is the unchecked version of sampling, which should only be used if the sample times t_n are already known to lie within the curveโ€™s domain. Read more
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fn sample_iter_clamped( &self, iter: impl IntoIterator<Item = f32>, ) -> impl Iterator<Item = T>

Sample a collection of n >= 0 points on this curve at the parameter values t_n, clamping t_n to lie inside the domain of the curve. Read more
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fn map<S, F>(self, f: F) -> MapCurve<T, S, Self, F>
where F: Fn(T) -> S,

Create a new curve by mapping the values of this curve via a function f; i.e., if the sample at time t for this curve is x, the value at time t on the new curve will be f(x).
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fn reparametrize<F>(self, domain: Interval, f: F) -> ReparamCurve<T, Self, F>
where F: Fn(f32) -> f32,

Create a new Curve whose parameter space is related to the parameter space of this curve by f. For each time t, the sample from the new curve at time t is the sample from this curve at time f(t). The given domain will be the domain of the new curve. The function f is expected to take domain into self.domain(). Read more
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fn reparametrize_linear( self, domain: Interval, ) -> Result<LinearReparamCurve<T, Self>, LinearReparamError>

Linearly reparametrize this Curve, producing a new curve whose domain is the given domain instead of the current one. This operation is only valid for curves with bounded domains. Read more
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fn reparametrize_by_curve<C>(self, other: C) -> CurveReparamCurve<T, Self, C>
where C: Curve<f32>,

Reparametrize this Curve by sampling from another curve. Read more
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fn graph(self) -> GraphCurve<T, Self>

Create a new Curve which is the graph of this one; that is, its output echoes the sample time as part of a tuple. Read more
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fn zip<S, C>( self, other: C, ) -> Result<ZipCurve<T, S, Self, C>, InvalidIntervalError>
where C: Curve<S>,

Create a new Curve by zipping this curve together with another. Read more
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fn chain<C>(self, other: C) -> Result<ChainCurve<T, Self, C>, ChainError>
where C: Curve<T>,

Create a new Curve by composing this curve end-to-start with another, producing another curve with outputs of the same type. The domain of the other curve is translated so that its start coincides with where this curve ends. Read more
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fn reverse(self) -> Result<ReverseCurve<T, Self>, ReverseError>

Create a new Curve inverting this curve on the x-axis, producing another curve with outputs of the same type, effectively playing backwards starting at self.domain().end() and transitioning over to self.domain().start(). The domain of the new curve is still the same. Read more
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fn repeat(self, count: usize) -> Result<RepeatCurve<T, Self>, RepeatError>

Create a new Curve repeating this curve N times, producing another curve with outputs of the same type. The domain of the new curve will be bigger by a factor of n + 1. Read more
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fn forever(self) -> Result<ForeverCurve<T, Self>, RepeatError>

Create a new Curve repeating this curve forever, producing another curve with outputs of the same type. The domain of the new curve will be unbounded. Read more
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fn ping_pong(self) -> Result<PingPongCurve<T, Self>, PingPongError>

Create a new Curve chaining the original curve with its inverse, producing another curve with outputs of the same type. The domain of the new curve will be twice as long. The transition point is guaranteed to not make any jumps. Read more
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fn chain_continue<C>( self, other: C, ) -> Result<ContinuationCurve<T, Self, C>, ChainError>
where T: VectorSpace, C: Curve<T>,

Create a new Curve by composing this curve end-to-start with another, producing another curve with outputs of the same type. The domain of the other curve is translated so that its start coincides with where this curve ends. Read more
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fn samples( &self, samples: usize, ) -> Result<impl Iterator<Item = T>, ResamplingError>

Extract an iterator over evenly-spaced samples from this curve. Read more
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fn by_ref(&self) -> &Self

Borrow this curve rather than taking ownership of it. This is essentially an alias for a prefix &; the point is that intermediate operations can be performed while retaining access to the original curve. Read more
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fn flip<U, V>(self) -> impl Curve<(V, U)>
where Self: CurveExt<(U, V)>,

Flip this curve so that its tuple output is arranged the other way.
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impl<C, T> CurveResampleExt<T> for C
where C: Curve<T> + ?Sized,

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fn resample<I>( &self, segments: usize, interpolation: I, ) -> Result<SampleCurve<T, I>, ResamplingError>
where I: Fn(&T, &T, f32) -> T,

Resample this Curve to produce a new one that is defined by interpolation over equally spaced sample values, using the provided interpolation to interpolate between adjacent samples. The curve is interpolated on segments segments between samples. For example, if segments is 1, only the start and end points of the curve are used as samples; if segments is 2, a sample at the midpoint is taken as well, and so on. Read more
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fn resample_auto( &self, segments: usize, ) -> Result<SampleAutoCurve<T>, ResamplingError>

Resample this Curve to produce a new one that is defined by interpolation over equally spaced sample values, using automatic interpolation to interpolate between adjacent samples. The curve is interpolated on segments segments between samples. For example, if segments is 1, only the start and end points of the curve are used as samples; if segments is 2, a sample at the midpoint is taken as well, and so on. Read more
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fn resample_uneven<I>( &self, sample_times: impl IntoIterator<Item = f32>, interpolation: I, ) -> Result<UnevenSampleCurve<T, I>, ResamplingError>
where I: Fn(&T, &T, f32) -> T,

Resample this Curve to produce a new one that is defined by interpolation over samples taken at a given set of times. The given interpolation is used to interpolate adjacent samples, and the sample_times are expected to contain at least two valid times within the curveโ€™s domain interval. Read more
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fn resample_uneven_auto( &self, sample_times: impl IntoIterator<Item = f32>, ) -> Result<UnevenSampleAutoCurve<T>, ResamplingError>

Resample this Curve to produce a new one that is defined by automatic interpolation over samples taken at the given set of times. The given sample_times are expected to contain at least two valid times within the curveโ€™s domain interval. Read more
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impl<T, C> CurveWithDerivative<T> for C
where T: HasTangent, C: SampleDerivative<T>,

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fn with_derivative(self) -> SampleDerivativeWrapper<C>

This curve, but with its first derivative included in sampling. Read more
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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 &Anyโ€™s vtable from &Traitโ€™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 Anyโ€™s vtable from &mut Traitโ€™s.
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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>

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

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

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

Convert &mut Trait (where Trait: Downcast) to &Any. This is needed since Rust cannot generate &mut Anyโ€™s vtable from &mut Traitโ€™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> DowncastSync for T
where T: Any + Send + Sync,

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fn into_any_arc(self: Arc<T>) -> Arc<dyn Any + Sync + Send>

Convert Arc<Trait> (where Trait: Downcast) to Arc<Any>. Arc<Any> can then be further downcast into Arc<ConcreteType> where ConcreteType implements Trait.
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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, W> HasTypeWitness<W> for T
where W: MakeTypeWitness<Arg = T>, T: ?Sized,

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const WITNESS: W = W::MAKE

A constant of the type witness
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impl<T> Identity for T
where T: ?Sized,

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const TYPE_EQ: TypeEq<T, <T as Identity>::Type> = TypeEq::NEW

Proof that Self is the same type as Self::Type, provides methods for casting between Self and Self::Type.
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type Type = T

The same type as Self, used to emulate type equality bounds (T == U) with associated type equality constraints (T: Identity<Type = U>).
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impl<T> Instrument for T

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fn instrument(self, span: Span) -> Instrumented<Self> โ“˜

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

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> IntoEither for T

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fn into_either(self, into_left: bool) -> Either<Self, Self> โ“˜

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> โ“˜
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> IntoResult<T> for T

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fn into_result(self) -> Result<T, RunSystemError>

Converts this type into the system output type.
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impl<A> Is for A
where A: Any,

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fn is<T>() -> bool
where T: Any,

Checks if the current type โ€œisโ€ another type, using a TypeId equality comparison. This is most useful in the context of generic logic. Read more
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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

๐Ÿ”ฌThis 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: 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> โ“˜

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> โ“˜
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

๐Ÿ‘ŽDeprecated 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>,

๐Ÿ‘ŽDeprecated since 0.9.0: Renamed to random_range
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fn gen_bool(&mut self, p: f64) -> bool

๐Ÿ‘ŽDeprecated 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

๐Ÿ‘ŽDeprecated since 0.9.0: Renamed to random_ratio
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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<T, C, D> SampleDerivative<T> for D
where T: HasTangent, C: SampleDerivative<T> + ?Sized, D: Deref<Target = C>,

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fn sample_with_derivative_unchecked(&self, t: f32) -> WithDerivative<T>

Sample this curve at the parameter value t, extracting the associated value in addition to its derivative. This is the unchecked version of sampling, which should only be used if the sample time t is already known to lie within the curveโ€™s domain. Read more
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fn sample_with_derivative(&self, t: f32) -> Option<WithDerivative<T>>

Sample this curveโ€™s value and derivative at the parameter value t, returning None if the point is outside of the curveโ€™s domain.
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fn sample_with_derivative_clamped(&self, t: f32) -> WithDerivative<T>

Sample this curveโ€™s value and derivative at the parameter value t, clamping t to lie inside the domain of the curve.
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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> TryRngCore for R
where R: RngCore + ?Sized,

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type Error = Infallible

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<T> WithSubscriber for T

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fn with_subscriber<S>(self, subscriber: S) -> WithDispatch<Self> โ“˜
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> โ“˜

Attaches the current default Subscriber to this type, returning a WithDispatch wrapper. Read more
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impl<T> ConditionalSend for T
where T: Send,

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

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impl<T> Settings for T
where T: 'static + Send + Sync,

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

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impl<T> WasmNotSend for T
where T: Send,

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impl<T> WasmNotSendSync for T

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impl<T> WasmNotSync for T
where T: Sync,