Struct polars_plan::dsl::StructNameSpace

pub struct StructNameSpace(/* private fields */);

Available on crate feature dtype-struct only.

Specialized expressions for Struct dtypes.

Implementations

impl StructNameSpace

pub fn field_by_index(self, index: i64) -> Expr

pub fn field_by_names<S: AsRef<str>>(self, names: &[S]) -> Expr

Retrieve one or multiple of the fields of this StructChunked as a new Series. This expression also expands the "*" wildcard column.

pub fn field_by_name(self, name: &str) -> Expr

Retrieve one of the fields of this StructChunked as a new Series. This expression also supports wildcard “*” and regex expansion.

pub fn rename_fields(self, names: Vec<String>) -> Expr

Rename the fields of the StructChunked.

pub fn json_encode(self) -> Expr

Available on crate feature json only.

pub fn with_fields(self, fields: Vec<Expr>) -> PolarsResult<Expr>