polars_plan::dsl

Struct ArrayNameSpace

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pub struct ArrayNameSpace(pub Expr);
Available on crate feature dtype-array only.
Expand description

Specialized expressions for Series of DataType::Array.

Tuple Fields§

§0: Expr

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impl ArrayNameSpace

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pub fn max(self) -> Expr

Compute the maximum of the items in every subarray.

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pub fn min(self) -> Expr

Compute the minimum of the items in every subarray.

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pub fn sum(self) -> Expr

Compute the sum of the items in every subarray.

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

Compute the std of the items in every subarray.

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

Compute the var of the items in every subarray.

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pub fn median(self) -> Expr

Compute the median of the items in every subarray.

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pub fn unique(self) -> Expr

Keep only the unique values in every sub-array.

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pub fn unique_stable(self) -> Expr

Keep only the unique values in every sub-array.

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pub fn n_unique(self) -> Expr

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pub fn to_list(self) -> Expr

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

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pub fn all(self) -> Expr

Available on crate feature array_any_all only.

Evaluate whether all boolean values are true for every subarray.

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pub fn any(self) -> Expr

Available on crate feature array_any_all only.

Evaluate whether any boolean value is true for every subarray

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

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pub fn reverse(self) -> Expr

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pub fn arg_min(self) -> Expr

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pub fn arg_max(self) -> Expr

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

Get items in every sub-array by index.

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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.

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

Available on crate feature is_in only.

Check if the sub-array contains specific element

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

Shift every sub-array.

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const ALIGN: usize = _

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