Struct DynState

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pub struct DynState { /* private fields */ }

Expand description

A type-erased optimizer state for a single parameter.

It wraps a concrete O::State<D> together with its rank D so that the rank can be recovered when the state is later interpreted by the originating Optimizer (during a step, a device transfer or serialization).

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impl DynState

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pub fn create<T: Send + Sync + 'static>(state: T, rank: usize) -> Self

Erase a concrete optimizer state of rank rank.

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pub fn downcast<T: Clone + Send + Sync + 'static>(self) -> T

Recover the concrete state by value, moving it out when this is the only handle and cloning only when the underlying state is still shared. Panics if T does not match the stored type.

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pub fn downcast_ref<T: 'static>(&self) -> &T

Borrow the concrete state without cloning. Panics if T does not match the stored type.

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pub fn rank(&self) -> usize

The rank of the parameter this state belongs to.

Trait Implementations§

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impl Clone for DynState

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fn clone(&self) -> DynState

Returns a duplicate of the value. Read more

1.0.0 (const: unstable) · Source§

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more

Auto Trait Implementations§

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impl UnsafeUnpin for DynState

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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<T> CloneExpand for T
where T: Clone,

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fn __expand_clone_method(&self, _: &Scope) -> T

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impl<T> CloneToUninit for T
where T: Clone,

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unsafe fn clone_to_uninit(&self, dest: *mut u8)

🔬This is a nightly-only experimental API. (clone_to_uninit)

Performs copy-assignment from self to dest. 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> 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 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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