Struct polars_arrow::scalar::MapScalar

pub struct MapScalar { /* private fields */ }

The scalar equivalent of MapArray. Like MapArray, this struct holds a dynamically-typed Array. The only difference is that this has only one element.

Implementations

impl MapScalar

pub fn new(data_type: ArrowDataType, values: Option<Box<dyn Array>>) -> Self

returns a new MapScalar

Panics

iff

• the data_type is not Map
• the child of the data_type is not equal to the values

pub fn values(&self) -> &Box<dyn Array>

The values of the MapScalar

Trait Implementations

impl Clone for MapScalar

fn clone(&self) -> MapScalar

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for MapScalar

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl PartialEq for MapScalar

fn eq(&self, other: &Self) -> bool

This method tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

This method tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Scalar for MapScalar

fn as_any(&self) -> &dyn Any

convert itself to

fn is_valid(&self) -> bool

whether it is valid

fn data_type(&self) -> &ArrowDataType

the logical type.