Struct re_viewer::external::arrow2::scalar::DictionaryScalar

pub struct DictionaryScalar<K>
where
    K: DictionaryKey,
{
    value: Option<Box<dyn Scalar>>,
    phantom: PhantomData<K>,
    data_type: DataType,
}

The DictionaryArray equivalent of Array for Scalar.

Fields

value: Option<Box<dyn Scalar>>

phantom: PhantomData<K>

data_type: DataType

Implementations

impl<K> DictionaryScalar<K>

where K: DictionaryKey,

pub fn new( data_type: DataType, value: Option<Box<dyn Scalar>> ) -> DictionaryScalar<K>

returns a new DictionaryScalar

Panics

iff

• the data_type is not List or LargeList (depending on this scalar’s offset O)
• the child of the data_type is not equal to the values

pub fn value(&self) -> Option<&Box<dyn Scalar>>

The values of the DictionaryScalar

Trait Implementations

impl<K> Clone for DictionaryScalar<K>

where K: Clone + DictionaryKey,

fn clone(&self) -> DictionaryScalar<K>

Returns a copy of the value.

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

Performs copy-assignment from source.

impl<K> Debug for DictionaryScalar<K>

where K: Debug + DictionaryKey,

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

Formats the value using the given formatter.

impl<K> PartialEq for DictionaryScalar<K>

where K: DictionaryKey,

fn eq(&self, other: &DictionaryScalar<K>) -> 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<K> Scalar for DictionaryScalar<K>

where K: DictionaryKey,

fn as_any(&self) -> &(dyn Any + 'static)

convert itself to

fn is_valid(&self) -> bool

whether it is valid

fn data_type(&self) -> &DataType

the logical type.