Trait ChunkCast

pub trait ChunkCast {
    // Required methods
    fn cast_with_options(
        &self,
        dtype: &DataType,
        options: CastOptions,
    ) -> PolarsResult<Series>;
    unsafe fn cast_unchecked(&self, dtype: &DataType) -> PolarsResult<Series>;

    // Provided method
    fn cast(&self, dtype: &DataType) -> PolarsResult<Series> { ... }
}

Cast ChunkedArray<T> to ChunkedArray<N>

Required Methods

fn cast_with_options( &self, dtype: &DataType, options: CastOptions, ) -> PolarsResult<Series>

Cast a ChunkedArray to DataType

unsafe fn cast_unchecked(&self, dtype: &DataType) -> PolarsResult<Series>

Does not check if the cast is a valid one and may over/underflow

Safety

• This doesn’t do utf8 validation checking when casting from binary
• This doesn’t do categorical bound checking when casting from UInt32

Provided Methods

fn cast(&self, dtype: &DataType) -> PolarsResult<Series>

Cast a ChunkedArray to DataType

Implementors

impl ChunkCast for ArrayChunked

Available on crate feature dtype-array only.

We cannot cast anything to or from List/LargeList So this implementation casts the inner type

impl ChunkCast for BinaryChunked

impl ChunkCast for BinaryOffsetChunked

impl ChunkCast for BooleanChunked

impl ChunkCast for ListChunked

We cannot cast anything to or from List/LargeList So this implementation casts the inner type

impl ChunkCast for StringChunked

impl<T> ChunkCast for ChunkedArray<T>

where T: PolarsNumericType,