Trait arrow2::scalar::Scalar

pub trait Scalar: Debug + Send + Sync + DynClone + 'static {
    fn as_any(&self) -> &dyn Any;
    fn is_valid(&self) -> bool;
    fn data_type(&self) -> &DataType;
}

Trait object declaring an optional value with a DataType. This strait is often used in APIs that accept multiple scalar types.

Required Methods

fn as_any(&self) -> &dyn Any

convert itself to

fn is_valid(&self) -> bool

whether it is valid

fn data_type(&self) -> &DataType

the logical type.

Trait Implementations

impl<'clone> Clone for Box<dyn Scalar + 'clone>

fn clone(&self) -> Self

Returns a copy of the value.

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

Performs copy-assignment from source.

impl<'clone> Clone for Box<dyn Scalar + Send + 'clone>

fn clone(&self) -> Self

Returns a copy of the value.

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

Performs copy-assignment from source.

impl<'clone> Clone for Box<dyn Scalar + Send + Sync + 'clone>

fn clone(&self) -> Self

Returns a copy of the value.

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

Performs copy-assignment from source.

impl<'clone> Clone for Box<dyn Scalar + Sync + 'clone>

fn clone(&self) -> Self

Returns a copy of the value.

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

Performs copy-assignment from source.

impl PartialEq<dyn Scalar + 'static> for Arc<dyn Scalar + '_>

fn eq(&self, that: &dyn Scalar) -> 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 PartialEq<dyn Scalar + 'static> for Box<dyn Scalar + '_>

fn eq(&self, that: &dyn Scalar) -> 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 PartialEq<dyn Scalar> for dyn Scalar + '_

fn eq(&self, that: &dyn Scalar) -> 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.

Implementors

impl Scalar for BooleanScalar

impl Scalar for FixedSizeBinaryScalar

impl Scalar for FixedSizeListScalar

impl Scalar for NullScalar

impl Scalar for StructScalar

impl Scalar for UnionScalar

impl<K: DictionaryKey> Scalar for DictionaryScalar<K>

impl<O: Offset> Scalar for BinaryScalar<O>

impl<O: Offset> Scalar for ListScalar<O>

impl<O: Offset> Scalar for Utf8Scalar<O>

impl<T: NativeType> Scalar for PrimitiveScalar<T>