Struct polars_lazy::dsl::ArrayNameSpace

pub struct ArrayNameSpace(pub Expr);
Expand description

Specialized expressions for Series of DataType::Array.

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§0: Expr

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impl ArrayNameSpace

pub fn max(self) -> Expr

Compute the maximum of the items in every subarray.

pub fn min(self) -> Expr

Compute the minimum of the items in every subarray.

pub fn sum(self) -> Expr

Compute the sum of the items in every subarray.

pub fn std(self, ddof: u8) -> Expr

Compute the std of the items in every subarray.

pub fn var(self, ddof: u8) -> Expr

Compute the var of the items in every subarray.

pub fn median(self) -> Expr

Compute the median of the items in every subarray.

pub fn unique(self) -> Expr

Keep only the unique values in every sub-array.

pub fn unique_stable(self) -> Expr

Keep only the unique values in every sub-array.

pub fn n_unique(self) -> Expr

pub fn to_list(self) -> Expr

Cast the Array column to List column with the same inner data type.

pub fn all(self) -> Expr

Available on crate feature array_any_all only.

Evaluate whether all boolean values are true for every subarray.

pub fn any(self) -> Expr

Available on crate feature array_any_all only.

Evaluate whether any boolean value is true for every subarray

pub fn sort(self, options: SortOptions) -> Expr

pub fn reverse(self) -> Expr

pub fn arg_min(self) -> Expr

pub fn arg_max(self) -> Expr

pub fn get(self, index: Expr, null_on_oob: bool) -> Expr

Get items in every sub-array by index.

pub fn join(self, separator: Expr, ignore_nulls: bool) -> Expr

Join all string items in a sub-array and place a separator between them.

§Error

Raise if inner type of array is not DataType::String.

pub fn contains<E>(self, other: E) -> Expr
where E: Into<Expr>,

Available on crate feature is_in only.

Check if the sub-array contains specific element

pub fn count_matches<E>(self, element: E) -> Expr
where E: Into<Expr>,

Available on crate feature array_count only.

Count how often the value produced by element occurs.

pub fn to_struct( self, name_generator: Option<Arc<dyn Fn(usize) -> SmartString<LazyCompact> + Send + Sync>> ) -> Expr

Available on crate feature array_to_struct only.

pub fn shift(self, n: Expr) -> Expr

Shift every sub-array.

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fn type_id(&self) -> TypeId

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fn borrow(&self) -> &T

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

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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> 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
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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
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fn vzip(self) -> V

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