polars::prelude

Trait PolarsDataType

pub unsafe trait PolarsDataType:
    Sized
    + Send
    + Sync {
    type Physical<'a>: Debug + Clone;
    type OwnedPhysical: Debug + Send + Sync + Clone + PartialEq;
    type ZeroablePhysical<'a>: Zeroable + From<Self::Physical<'a>>;
    type Array: for<'a> StaticArray<ValueT<'a> = Self::Physical<'a>, ZeroableValueT<'a> = Self::ZeroablePhysical<'a>>;
    type IsNested;
    type HasViews;
    type IsStruct;
    type IsObject;

    // Required method
    fn get_dtype() -> DataType
       where Self: Sized;
}

Expand description

§Safety

The StaticArray and dtype return must be correct.

Required Associated Types§

type Physical<'a>: Debug + Clone

type OwnedPhysical: Debug + Send + Sync + Clone + PartialEq

type ZeroablePhysical<'a>: Zeroable + From<Self::Physical<'a>>

type Array: for<'a> StaticArray<ValueT<'a> = Self::Physical<'a>, ZeroableValueT<'a> = Self::ZeroablePhysical<'a>>

type IsNested

type HasViews

type IsStruct

type IsObject

Required Methods§

fn get_dtype() -> DataType
where Self: Sized,

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.

Implementors§

impl PolarsDataType for BinaryOffsetType

type Physical<'a> = &'a [u8]

type OwnedPhysical = Box<[u8]>

type ZeroablePhysical<'a> = Option<&'a [u8]>

type Array = BinaryArray<i64>

type IsNested = FalseT

type HasViews = FalseT

type IsStruct = FalseT

type IsObject = FalseT

impl PolarsDataType for BinaryType

type Physical<'a> = &'a [u8]

type OwnedPhysical = Box<[u8]>

type ZeroablePhysical<'a> = Option<&'a [u8]>

type Array = BinaryViewArrayGeneric<[u8]>

type IsNested = FalseT

type HasViews = TrueT

type IsStruct = FalseT

type IsObject = FalseT

impl PolarsDataType for BooleanType

type Physical<'a> = bool

type OwnedPhysical = bool

type ZeroablePhysical<'a> = bool

type Array = BooleanArray

type IsNested = FalseT

type HasViews = FalseT

type IsStruct = FalseT

type IsObject = FalseT

impl PolarsDataType for CategoricalType

type Physical<'a> = u32

type OwnedPhysical = u32

type ZeroablePhysical<'a> = u32

type Array = PrimitiveArray<u32>

type IsNested = FalseT

type HasViews = FalseT

type IsStruct = FalseT

type IsObject = FalseT

impl PolarsDataType for DateType

type Physical<'a> = i32

type OwnedPhysical = i32

type ZeroablePhysical<'a> = i32

type Array = PrimitiveArray<i32>

type IsNested = FalseT

type HasViews = FalseT

type IsStruct = FalseT

type IsObject = FalseT

impl PolarsDataType for DatetimeType

type Physical<'a> = i64

type OwnedPhysical = i64

type ZeroablePhysical<'a> = i64

type Array = PrimitiveArray<i64>

type IsNested = FalseT

type HasViews = FalseT

type IsStruct = FalseT

type IsObject = FalseT

impl PolarsDataType for DecimalType

type Physical<'a> = i128

type OwnedPhysical = i128

type ZeroablePhysical<'a> = i128

type Array = PrimitiveArray<i128>

type IsNested = FalseT

type HasViews = FalseT

type IsStruct = FalseT

type IsObject = FalseT

impl PolarsDataType for DurationType

type Physical<'a> = i64

type OwnedPhysical = i64

type ZeroablePhysical<'a> = i64

type Array = PrimitiveArray<i64>

type IsNested = FalseT

type HasViews = FalseT

type IsStruct = FalseT

type IsObject = FalseT

impl PolarsDataType for FixedSizeListType

Available on crate feature dtype-array only.

type Physical<'a> = Box<dyn Array>

type OwnedPhysical = Box<dyn Array>

type ZeroablePhysical<'a> = Option<Box<dyn Array>>

type Array = FixedSizeListArray

type IsNested = TrueT

type HasViews = FalseT

type IsStruct = FalseT

type IsObject = FalseT

impl PolarsDataType for Float32Type

type Physical<'a> = f32

type OwnedPhysical = f32

type ZeroablePhysical<'a> = f32

type Array = PrimitiveArray<f32>

type IsNested = FalseT

type HasViews = FalseT

type IsStruct = FalseT

type IsObject = FalseT

impl PolarsDataType for Float64Type

type Physical<'a> = f64

type OwnedPhysical = f64

type ZeroablePhysical<'a> = f64

type Array = PrimitiveArray<f64>

type IsNested = FalseT

type HasViews = FalseT

type IsStruct = FalseT

type IsObject = FalseT

impl PolarsDataType for Int8Type

type Physical<'a> = i8

type OwnedPhysical = i8

type ZeroablePhysical<'a> = i8

type Array = PrimitiveArray<i8>

type IsNested = FalseT

type HasViews = FalseT

type IsStruct = FalseT

type IsObject = FalseT

impl PolarsDataType for Int16Type

type Physical<'a> = i16

type OwnedPhysical = i16

type ZeroablePhysical<'a> = i16

type Array = PrimitiveArray<i16>

type IsNested = FalseT

type HasViews = FalseT

type IsStruct = FalseT

type IsObject = FalseT

impl PolarsDataType for Int32Type

type Physical<'a> = i32

type OwnedPhysical = i32

type ZeroablePhysical<'a> = i32

type Array = PrimitiveArray<i32>

type IsNested = FalseT

type HasViews = FalseT

type IsStruct = FalseT

type IsObject = FalseT

impl PolarsDataType for Int64Type

type Physical<'a> = i64

type OwnedPhysical = i64

type ZeroablePhysical<'a> = i64

type Array = PrimitiveArray<i64>

type IsNested = FalseT

type HasViews = FalseT

type IsStruct = FalseT

type IsObject = FalseT

impl PolarsDataType for Int128Type

Available on crate feature dtype-decimal only.

type Physical<'a> = i128

type OwnedPhysical = i128

type ZeroablePhysical<'a> = i128

type Array = PrimitiveArray<i128>

type IsNested = FalseT

type HasViews = FalseT

type IsStruct = FalseT

type IsObject = FalseT

impl PolarsDataType for ListType

type Physical<'a> = Box<dyn Array>

type OwnedPhysical = Box<dyn Array>

type ZeroablePhysical<'a> = Option<Box<dyn Array>>

type Array = ListArray<i64>

type IsNested = TrueT

type HasViews = FalseT

type IsStruct = FalseT

type IsObject = FalseT

impl PolarsDataType for StringType

type Physical<'a> = &'a str

type OwnedPhysical = String

type ZeroablePhysical<'a> = Option<&'a str>

type Array = BinaryViewArrayGeneric<str>

type IsNested = FalseT

type HasViews = TrueT

type IsStruct = FalseT

type IsObject = FalseT

impl PolarsDataType for StructType

Available on crate feature dtype-struct only.

type Physical<'a> = ()

type OwnedPhysical = ()

type ZeroablePhysical<'a> = ()

type Array = StructArray

type IsNested = TrueT

type HasViews = FalseT

type IsStruct = TrueT

type IsObject = FalseT

impl PolarsDataType for TimeType

type Physical<'a> = i64

type OwnedPhysical = i64

type ZeroablePhysical<'a> = i64

type Array = PrimitiveArray<i64>

type IsNested = FalseT

type HasViews = FalseT

type IsStruct = FalseT

type IsObject = FalseT

impl PolarsDataType for UInt8Type

type Physical<'a> = u8

type OwnedPhysical = u8

type ZeroablePhysical<'a> = u8

type Array = PrimitiveArray<u8>

type IsNested = FalseT

type HasViews = FalseT

type IsStruct = FalseT

type IsObject = FalseT

impl PolarsDataType for UInt16Type

type Physical<'a> = u16

type OwnedPhysical = u16

type ZeroablePhysical<'a> = u16

type Array = PrimitiveArray<u16>

type IsNested = FalseT

type HasViews = FalseT

type IsStruct = FalseT

type IsObject = FalseT

impl PolarsDataType for UInt32Type

type Physical<'a> = u32

type OwnedPhysical = u32

type ZeroablePhysical<'a> = u32

type Array = PrimitiveArray<u32>

type IsNested = FalseT

type HasViews = FalseT

type IsStruct = FalseT

type IsObject = FalseT

impl PolarsDataType for UInt64Type

type Physical<'a> = u64

type OwnedPhysical = u64

type ZeroablePhysical<'a> = u64

type Array = PrimitiveArray<u64>

type IsNested = FalseT

type HasViews = FalseT

type IsStruct = FalseT

type IsObject = FalseT

impl<T> PolarsDataType for ObjectType<T>
where T: PolarsObject,

Available on crate feature object only.

type Physical<'a> = &'a T

type OwnedPhysical = T

type ZeroablePhysical<'a> = Option<&'a T>

type Array = ObjectArray<T>

type IsNested = FalseT

type HasViews = FalseT

type IsStruct = FalseT

type IsObject = TrueT