polars_expr::reduce

Struct VecMaskGroupedReduction

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pub struct VecMaskGroupedReduction<R: Reducer> { /* private fields */ }

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impl<R> GroupedReduction for VecMaskGroupedReduction<R>
where R: Reducer,

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fn new_empty(&self) -> Box<dyn GroupedReduction>

Returns a new empty reduction.
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fn reserve(&mut self, additional: usize)

Reserves space in this GroupedReduction for an additional number of groups.
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fn resize(&mut self, num_groups: IdxSize)

Resizes this GroupedReduction to the given number of groups. Read more
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fn update_group( &mut self, values: &Series, group_idx: IdxSize, ) -> PolarsResult<()>

Updates the specified group with the given values.
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unsafe fn update_groups( &mut self, values: &Series, group_idxs: &[IdxSize], ) -> PolarsResult<()>

Updates this GroupedReduction with new values. values[i] should be added to reduction self[group_idxs[i]]. Read more
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unsafe fn combine( &mut self, other: &dyn GroupedReduction, group_idxs: &[IdxSize], ) -> PolarsResult<()>

Combines this GroupedReduction with another. Group other[i] should be combined into group self[group_idxs[i]]. Read more
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unsafe fn gather_combine( &mut self, other: &dyn GroupedReduction, subset: &[IdxSize], group_idxs: &[IdxSize], ) -> PolarsResult<()>

Combines this GroupedReduction with another. Group other[subset[i]] should be combined into group self[group_idxs[i]]. Read more
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unsafe fn partition( self: Box<Self>, partition_sizes: &[IdxSize], partition_idxs: &[IdxSize], ) -> Vec<Box<dyn GroupedReduction>>

Partitions this GroupedReduction into several partitions. Read more
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fn finalize(&mut self) -> PolarsResult<Series>

Returns the finalized value per group as a Series. Read more
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fn as_any(&self) -> &dyn Any

Returns this GroupedReduction as a dyn Any.

Auto Trait Implementations§

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<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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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>

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, 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<V, T> VZip<V> for T
where V: MultiLane<T>,

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fn vzip(self) -> V