Module scalar

contains the Scalar trait object representing individual items of Arrays, as well as concrete implementations such as BooleanScalar.

Structs

BinaryScalar

The Scalar implementation of binary (Option<Vec<u8>>).

BinaryViewScalar

The implementation of Scalar for utf8, semantically equivalent to Option<String>.

BooleanScalar

The Scalar implementation of a boolean.

DictionaryScalar

The DictionaryArray equivalent of Array for Scalar.

FixedSizeBinaryScalar

The Scalar implementation of fixed size binary ([Option<Box<[u8]>>]).

FixedSizeListScalar

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

ListScalar

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

MapScalar

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

NullScalar

The representation of a single entry of a crate::array::NullArray.

PrimitiveScalar

The implementation of Scalar for primitive, semantically equivalent to Option<T> with ArrowDataType.

StructScalar

A single entry of a crate::array::StructArray.

UnionScalar

A single entry of a crate::array::UnionArray.

Utf8Scalar

The implementation of Scalar for utf8, semantically equivalent to Option<String>.

Traits

Scalar

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

Functions

new_scalar

creates a new Scalar from an Array.