Trait ScalarType

pub trait ScalarType<T: ArrowNativeType> {
    // Required method
    fn scalar(r: Option<T>) -> ScalarValue;
}

Trait used to map a NativeType to a ScalarValue

Required Methods

fn scalar(r: Option<T>) -> ScalarValue

returns a scalar from an optional T

Dyn Compatibility

This trait is not dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety", so this trait is not object safe.

Implementations on Foreign Types

impl ScalarType<f32> for Float32Type

fn scalar(r: Option<f32>) -> ScalarValue

impl ScalarType<i32> for Date32Type

fn scalar(r: Option<i32>) -> ScalarValue

impl ScalarType<i64> for TimestampMicrosecondType

fn scalar(r: Option<i64>) -> ScalarValue

impl ScalarType<i64> for TimestampMillisecondType

fn scalar(r: Option<i64>) -> ScalarValue

impl ScalarType<i64> for TimestampNanosecondType

fn scalar(r: Option<i64>) -> ScalarValue

impl ScalarType<i64> for TimestampSecondType

fn scalar(r: Option<i64>) -> ScalarValue

Implementors