Scalar

Enum Scalar

pub enum Scalar {
    Null(NullScalar),
    Bool(BoolScalar),
    Decimal(DecimalScalar),
    Primitive(PrimitiveScalar),
    String(StringScalar),
    Binary(BinaryScalar),
    List(ListViewScalar),
    FixedSizeList(FixedSizeListScalar),
    Struct(StructScalar),
}

Expand description

Represents a scalar value of any supported type.

Variants§

Null(NullScalar)

Null scalars are always null.

Bool(BoolScalar)

Boolean scalars hold the boolean value in an Option, where None represents null.

Decimal(DecimalScalar)

Decimal scalars hold the decimal value in a DScalar, or else None for null.

Primitive(PrimitiveScalar)

Primitive scalars hold the primitive value in a PScalar, or else None for null.

String(StringScalar)

String scalars hold the string data in a BufferString, or else None for null.

Binary(BinaryScalar)

Binary scalars hold the binary data in a ByteBuffer, or else None for null.

List(ListViewScalar)

Variable-size list scalars hold the list elements in a vector, or else None for null.

FixedSizeList(FixedSizeListScalar)

Fixed-size list scalars hold the list elements in a vector, or else None for null.

Struct(StructScalar)

Struct scalars are represented as a length-1 struct vector.

Implementations§

impl Scalar

pub fn into_null(self) -> NullScalar

Converts the Scalar into a NullScalar.

pub fn into_bool(self) -> BoolScalar

Converts the Scalar into a BoolScalar.

pub fn into_decimal(self) -> DecimalScalar

Converts the Scalar into a DecimalScalar.

pub fn into_primitive(self) -> PrimitiveScalar

Converts the Scalar into a PrimitiveScalar.

pub fn into_string(self) -> StringScalar

Converts the Scalar into a StringScalar.

pub fn into_binary(self) -> BinaryScalar

Converts the Scalar into a BinaryScalar.

pub fn into_list(self) -> ListViewScalar

Converts the Scalar into a ListViewScalar.

pub fn into_fixed_size_list(self) -> FixedSizeListScalar

Converts the Scalar into a FixedSizeListScalar.

pub fn into_struct(self) -> StructScalar

Converts the Scalar into a StructScalar.

Trait Implementations§

impl BinaryViewTypeUpcast for Scalar

type Input<T: BinaryViewType> = BinaryViewScalar<T>

The input type for upcasting.

fn from_binary(input: Self::Input<BinaryType>) -> Self

Upcast from a binary type.

fn from_string(input: Self::Input<StringType>) -> Self

Upcast from a string type.

impl Debug for Scalar

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter. Read more

impl<T: BinaryViewType> From<BinaryViewScalar<T>> for Scalar

fn from(val: BinaryViewScalar<T>) -> Self

Converts to this type from the input type.

impl From<BoolScalar> for Scalar

fn from(val: BoolScalar) -> Self

Converts to this type from the input type.

impl<D: NativeDecimalType> From<DScalar<D>> for Scalar

fn from(value: DScalar<D>) -> Self

Converts to this type from the input type.

impl From<DecimalScalar> for Scalar

fn from(val: DecimalScalar) -> Self

Converts to this type from the input type.

impl From<FixedSizeListScalar> for Scalar

fn from(val: FixedSizeListScalar) -> Self

Converts to this type from the input type.

impl From<ListViewScalar> for Scalar

fn from(val: ListViewScalar) -> Self

Converts to this type from the input type.

impl From<NullScalar> for Scalar

fn from(val: NullScalar) -> Self

Converts to this type from the input type.

impl<T: NativePType> From<PScalar<T>> for Scalar

fn from(value: PScalar<T>) -> Self

Converts to this type from the input type.

impl From<PrimitiveScalar> for Scalar

fn from(val: PrimitiveScalar) -> Self

Converts to this type from the input type.

impl From<StructScalar> for Scalar

fn from(val: StructScalar) -> Self

Converts to this type from the input type.

impl ScalarOps for Scalar

fn is_valid(&self) -> bool

Returns true if the scalar is valid (not null).

fn repeat(&self, n: usize) -> VectorMut

Creates a new vector with n repetitions of this scalar.

fn is_invalid(&self) -> bool

Returns true if the scalar is null.

Auto Trait Implementations§

impl !Freeze for Scalar

impl RefUnwindSafe for Scalar

impl Send for Scalar

impl Sync for Scalar

impl Unpin for Scalar

impl UnwindSafe for Scalar

Blanket Implementations§

impl<T> Any for T
where T: 'static + ?Sized,

fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more

impl<T> Borrow<T> for T
where T: ?Sized,

fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more

impl<T> BorrowMut<T> for T
where T: ?Sized,

fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more

impl<T> Conv for T

fn conv<T>(self) -> T
where Self: Into<T>,

Converts self into T using Into<T>. Read more

impl<T> FmtForward for T

fn fmt_binary(self) -> FmtBinary<Self>
where Self: Binary,

Causes self to use its Binary implementation when Debug-formatted.

fn fmt_display(self) -> FmtDisplay<Self>
where Self: Display,

Causes self to use its Display implementation when Debug-formatted.

fn fmt_lower_exp(self) -> FmtLowerExp<Self>
where Self: LowerExp,

Causes self to use its LowerExp implementation when Debug-formatted.

fn fmt_lower_hex(self) -> FmtLowerHex<Self>
where Self: LowerHex,

Causes self to use its LowerHex implementation when Debug-formatted.

fn fmt_octal(self) -> FmtOctal<Self>
where Self: Octal,

Causes self to use its Octal implementation when Debug-formatted.

fn fmt_pointer(self) -> FmtPointer<Self>
where Self: Pointer,

Causes self to use its Pointer implementation when Debug-formatted.

fn fmt_upper_exp(self) -> FmtUpperExp<Self>
where Self: UpperExp,

Causes self to use its UpperExp implementation when Debug-formatted.

fn fmt_upper_hex(self) -> FmtUpperHex<Self>
where Self: UpperHex,

Causes self to use its UpperHex implementation when Debug-formatted.

fn fmt_list(self) -> FmtList<Self>
where &'a Self: for<'a> IntoIterator,

Formats each item in a sequence. Read more

impl<T> From<T> for T

fn from(t: T) -> T

Returns the argument unchanged.

impl<T, U> Into<U> for T
where U: From<T>,

fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

impl<T> IntoEither for T

fn into_either(self, into_left: bool) -> Either<Self, Self>

Converts self into a Left variant of Either<Self, Self> if into_left is true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more

fn into_either_with<F>(self, into_left: F) -> Either<Self, Self>
where F: FnOnce(&Self) -> bool,

Converts self into a Left variant of Either<Self, Self> if into_left(&self) returns true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more

impl<T> Pipe for T
where T: ?Sized,

fn pipe<R>(self, func: impl FnOnce(Self) -> R) -> R
where Self: Sized,

Pipes by value. This is generally the method you want to use. Read more

fn pipe_ref<'a, R>(&'a self, func: impl FnOnce(&'a Self) -> R) -> R
where R: 'a,

Borrows self and passes that borrow into the pipe function. Read more

fn pipe_ref_mut<'a, R>(&'a mut self, func: impl FnOnce(&'a mut Self) -> R) -> R
where R: 'a,

Mutably borrows self and passes that borrow into the pipe function. Read more

fn pipe_borrow<'a, B, R>(&'a self, func: impl FnOnce(&'a B) -> R) -> R
where Self: Borrow<B>, B: 'a + ?Sized, R: 'a,

Borrows self, then passes self.borrow() into the pipe function. Read more

fn pipe_borrow_mut<'a, B, R>( &'a mut self, func: impl FnOnce(&'a mut B) -> R, ) -> R
where Self: BorrowMut<B>, B: 'a + ?Sized, R: 'a,

Mutably borrows self, then passes self.borrow_mut() into the pipe function. Read more

fn pipe_as_ref<'a, U, R>(&'a self, func: impl FnOnce(&'a U) -> R) -> R
where Self: AsRef<U>, U: 'a + ?Sized, R: 'a,

Borrows self, then passes self.as_ref() into the pipe function.

fn pipe_as_mut<'a, U, R>(&'a mut self, func: impl FnOnce(&'a mut U) -> R) -> R
where Self: AsMut<U>, U: 'a + ?Sized, R: 'a,

Mutably borrows self, then passes self.as_mut() into the pipe function.

fn pipe_deref<'a, T, R>(&'a self, func: impl FnOnce(&'a T) -> R) -> R
where Self: Deref<Target = T>, T: 'a + ?Sized, R: 'a,

Borrows self, then passes self.deref() into the pipe function.

fn pipe_deref_mut<'a, T, R>( &'a mut self, func: impl FnOnce(&'a mut T) -> R, ) -> R
where Self: DerefMut<Target = T> + Deref, T: 'a + ?Sized, R: 'a,

Mutably borrows self, then passes self.deref_mut() into the pipe function.

impl<T> Tap for T

fn tap(self, func: impl FnOnce(&Self)) -> Self

Immutable access to a value. Read more

fn tap_mut(self, func: impl FnOnce(&mut Self)) -> Self

Mutable access to a value. Read more

fn tap_borrow<B>(self, func: impl FnOnce(&B)) -> Self
where Self: Borrow<B>, B: ?Sized,

Immutable access to the Borrow<B> of a value. Read more

fn tap_borrow_mut<B>(self, func: impl FnOnce(&mut B)) -> Self
where Self: BorrowMut<B>, B: ?Sized,

Mutable access to the BorrowMut<B> of a value. Read more

fn tap_ref<R>(self, func: impl FnOnce(&R)) -> Self
where Self: AsRef<R>, R: ?Sized,

Immutable access to the AsRef<R> view of a value. Read more

fn tap_ref_mut<R>(self, func: impl FnOnce(&mut R)) -> Self
where Self: AsMut<R>, R: ?Sized,

Mutable access to the AsMut<R> view of a value. Read more

fn tap_deref<T>(self, func: impl FnOnce(&T)) -> Self
where Self: Deref<Target = T>, T: ?Sized,

Immutable access to the Deref::Target of a value. Read more

fn tap_deref_mut<T>(self, func: impl FnOnce(&mut T)) -> Self
where Self: DerefMut<Target = T> + Deref, T: ?Sized,

Mutable access to the Deref::Target of a value. Read more

fn tap_dbg(self, func: impl FnOnce(&Self)) -> Self

Calls .tap() only in debug builds, and is erased in release builds.

fn tap_mut_dbg(self, func: impl FnOnce(&mut Self)) -> Self

Calls .tap_mut() only in debug builds, and is erased in release builds.

fn tap_borrow_dbg<B>(self, func: impl FnOnce(&B)) -> Self
where Self: Borrow<B>, B: ?Sized,

Calls .tap_borrow() only in debug builds, and is erased in release builds.

fn tap_borrow_mut_dbg<B>(self, func: impl FnOnce(&mut B)) -> Self
where Self: BorrowMut<B>, B: ?Sized,

Calls .tap_borrow_mut() only in debug builds, and is erased in release builds.

fn tap_ref_dbg<R>(self, func: impl FnOnce(&R)) -> Self
where Self: AsRef<R>, R: ?Sized,

Calls .tap_ref() only in debug builds, and is erased in release builds.

fn tap_ref_mut_dbg<R>(self, func: impl FnOnce(&mut R)) -> Self
where Self: AsMut<R>, R: ?Sized,

Calls .tap_ref_mut() only in debug builds, and is erased in release builds.

fn tap_deref_dbg<T>(self, func: impl FnOnce(&T)) -> Self
where Self: Deref<Target = T>, T: ?Sized,

Calls .tap_deref() only in debug builds, and is erased in release builds.

fn tap_deref_mut_dbg<T>(self, func: impl FnOnce(&mut T)) -> Self
where Self: DerefMut<Target = T> + Deref, T: ?Sized,

Calls .tap_deref_mut() only in debug builds, and is erased in release builds.

impl<T> TryConv for T

fn try_conv<T>(self) -> Result<T, Self::Error>
where Self: TryInto<T>,

Attempts to convert self into T using TryInto<T>. Read more

impl<T, U> TryFrom<U> for T
where U: Into<T>,

type Error = Infallible

The type returned in the event of a conversion error.

fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.

impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.

fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.

impl<T> Allocation for T
where T: RefUnwindSafe + Send + Sync,

impl<T> ErasedDestructor for T
where T: 'static,