Struct LazyDerivedSeries

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pub struct LazyDerivedSeries { /* private fields */ }

Expand description

Lazy wrapper around a derived series definition that caches its result.

The expression is only evaluated when get() is called for the first time (or after invalidate()), and the result is cached for subsequent reads.

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impl LazyDerivedSeries

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pub fn new(definition: DerivedSeriesDefinition) -> Self

Creates a new lazy-evaluated derived series.

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pub fn get( &self, ctx: &MultiSeriesContext, ) -> Result<Vec<f64>, MultivariateError>

Returns the cached result, evaluating the expression if needed.

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pub fn invalidate(&self)

Invalidates the cached result, forcing re-evaluation on next get().

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pub fn is_cached(&self) -> bool

Returns true if the result is currently cached.

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pub fn definition(&self) -> &DerivedSeriesDefinition

Returns the underlying definition.

Auto Trait Implementations§

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impl UnsafeUnpin for LazyDerivedSeries

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<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> 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> 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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