Enum NullValues

pub enum NullValues {
    AllColumnsSingle(PlSmallStr),
    AllColumns(Vec<PlSmallStr>),
    Named(Vec<(PlSmallStr, PlSmallStr)>),
}

Available on crate feature polars-io only.

Variants

AllColumnsSingle(PlSmallStr)

A single value that’s used for all columns

AllColumns(Vec<PlSmallStr>)

Multiple values that are used for all columns

Named(Vec<(PlSmallStr, PlSmallStr)>)

Tuples that map column names to null value of that column

Implementations

impl NullValues

pub fn compile( self, schema: &Schema<DataType>, ) -> Result<NullValuesCompiled, PolarsError>

Trait Implementations

impl Clone for NullValues

fn clone(&self) -> NullValues

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for NullValues

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for NullValues

fn deserialize<__D>( __deserializer: __D, ) -> Result<NullValues, <__D as Deserializer<'de>>::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Hash for NullValues

fn hash<__H>(&self, state: &mut __H)

where __H: Hasher,

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl PartialEq for NullValues

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

Tests for self and other values to be equal, and is used by ==.

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

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

impl Serialize for NullValues

fn serialize<__S>( &self, __serializer: __S, ) -> Result<<__S as Serializer>::Ok, <__S as Serializer>::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl Eq for NullValues

impl StructuralPartialEq for NullValues