ConstantImpl

dolphindb::types

Enum ConstantImpl

pub enum ConstantImpl {
    Scalar(ScalarImpl),
    Vector(VectorImpl),
    Pair(PairImpl),
    Dictionary(DictionaryImpl),
    Set(SetImpl),
    Table(Table),
}

Variants§

Scalar(ScalarImpl)

Vector(VectorImpl)

Pair(PairImpl)

Dictionary(DictionaryImpl)

Set(SetImpl)

Table(Table)

Implementations§

impl ConstantImpl

pub fn is_null(&self) -> bool

pub fn get(&self, index: usize) -> Option<ConstantImpl>

impl ConstantImpl

pub fn as_scalar(&self) -> Result<&ScalarImpl, Error>

pub fn as_mut_scalar(&mut self) -> Result<&mut ScalarImpl, Error>

pub fn as_vector(&self) -> Result<&VectorImpl, Error>

pub fn as_mut_vector(&mut self) -> Result<&mut VectorImpl, Error>

pub fn as_pair(&self) -> Result<&PairImpl, Error>

pub fn as_mut_pair(&mut self) -> Result<&mut PairImpl, Error>

pub fn as_set(&self) -> Result<&SetImpl, Error>

pub fn as_mut_set(&mut self) -> Result<&mut SetImpl, Error>

pub fn as_dictionary(&self) -> Result<&DictionaryImpl, Error>

pub fn as_mut_dictionary(&mut self) -> Result<&mut DictionaryImpl, Error>

pub fn as_table(&self) -> Result<&Table, Error>

pub fn as_mut_table(&mut self) -> Result<&mut Table, Error>

Trait Implementations§

impl Clone for ConstantImpl

fn clone(&self) -> ConstantImpl

Returns a duplicate of the value. Read more

1.0.0 · Source§

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more

impl Constant for ConstantImpl

fn data_form(&self) -> DataForm

data category identifier for serialization.

fn data_type(&self) -> DataType

data type identifier for serialization.

fn len(&self) -> usize

Returns the number of elements in Constant.

fn is_empty(&self) -> bool

impl Debug for ConstantImpl

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

Formats the value using the given formatter. Read more

impl Default for ConstantImpl

fn default() -> Self

Returns the “default value” for a type. Read more

impl Display for ConstantImpl

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

Formats the value using the given formatter. Read more

impl From<ArrayVector<f32>> for ConstantImpl

fn from(value: ArrayVector<f32>) -> Self

Converts to this type from the input type.

impl From<ArrayVector<f64>> for ConstantImpl

fn from(value: ArrayVector<f64>) -> Self

Converts to this type from the input type.

impl From<ArrayVector<i16>> for ConstantImpl

fn from(value: ArrayVector<i16>) -> Self

Converts to this type from the input type.

impl From<ArrayVector<i32>> for ConstantImpl

fn from(value: ArrayVector<i32>) -> Self

Converts to this type from the input type.

impl From<ArrayVector<i64>> for ConstantImpl

fn from(value: ArrayVector<i64>) -> Self

Converts to this type from the input type.

impl From<ArrayVector<i8>> for ConstantImpl

fn from(value: ArrayVector<i8>) -> Self

Converts to this type from the input type.

impl From<Blob> for ConstantImpl

fn from(value: Blob) -> Self

Converts to this type from the input type.

impl From<Bool> for ConstantImpl

fn from(value: Bool) -> Self

Converts to this type from the input type.

impl From<Char> for ConstantImpl

fn from(value: Char) -> Self

Converts to this type from the input type.

impl From<ConstantImpl> for Any

fn from(value: ConstantImpl) -> Self

Converts to this type from the input type.

impl From<Date> for ConstantImpl

fn from(value: Date) -> Self

Converts to this type from the input type.

impl From<DateHour> for ConstantImpl

fn from(value: DateHour) -> Self

Converts to this type from the input type.

impl From<DateTime> for ConstantImpl

fn from(value: DateTime) -> Self

Converts to this type from the input type.

impl From<Decimal128> for ConstantImpl

fn from(value: Decimal128) -> Self

Converts to this type from the input type.

impl From<Decimal32> for ConstantImpl

fn from(value: Decimal32) -> Self

Converts to this type from the input type.

impl From<Decimal64> for ConstantImpl

fn from(value: Decimal64) -> Self

Converts to this type from the input type.

impl From<DictionaryImpl> for ConstantImpl

fn from(value: DictionaryImpl) -> Self

Converts to this type from the input type.

impl From<DolphinString> for ConstantImpl

fn from(value: DolphinString) -> Self

Converts to this type from the input type.

impl From<Double> for ConstantImpl

fn from(value: Double) -> Self

Converts to this type from the input type.

impl From<Float> for ConstantImpl

fn from(value: Float) -> Self

Converts to this type from the input type.

impl From<Int> for ConstantImpl

fn from(value: Int) -> Self

Converts to this type from the input type.

impl From<Long> for ConstantImpl

fn from(value: Long) -> Self

Converts to this type from the input type.

impl From<Minute> for ConstantImpl

fn from(value: Minute) -> Self

Converts to this type from the input type.

impl From<Month> for ConstantImpl

fn from(value: Month) -> Self

Converts to this type from the input type.

impl From<NanoTime> for ConstantImpl

fn from(value: NanoTime) -> Self

Converts to this type from the input type.

impl From<NanoTimestamp> for ConstantImpl

fn from(value: NanoTimestamp) -> Self

Converts to this type from the input type.

impl From<PairImpl> for ConstantImpl

fn from(value: PairImpl) -> Self

Converts to this type from the input type.

impl From<ScalarImpl> for ConstantImpl

fn from(value: ScalarImpl) -> Self

Converts to this type from the input type.

impl From<Second> for ConstantImpl

fn from(value: Second) -> Self

Converts to this type from the input type.

impl From<SetImpl> for ConstantImpl

fn from(value: SetImpl) -> Self

Converts to this type from the input type.

impl From<Short> for ConstantImpl

fn from(value: Short) -> Self

Converts to this type from the input type.

impl From<Symbol> for ConstantImpl

fn from(value: Symbol) -> Self

Converts to this type from the input type.

impl From<Table> for ConstantImpl

fn from(value: Table) -> Self

Converts to this type from the input type.

impl From<Time> for ConstantImpl

fn from(value: Time) -> Self

Converts to this type from the input type.

impl From<Timestamp> for ConstantImpl

fn from(value: Timestamp) -> Self

Converts to this type from the input type.

impl From<Vector<Blob>> for ConstantImpl

fn from(value: Vector<Blob>) -> Self

Converts to this type from the input type.

impl From<Vector<Bool>> for ConstantImpl

fn from(value: Vector<Bool>) -> Self

Converts to this type from the input type.

impl From<Vector<Char>> for ConstantImpl

fn from(value: Vector<Char>) -> Self

Converts to this type from the input type.

impl From<Vector<Date>> for ConstantImpl

fn from(value: Vector<Date>) -> Self

Converts to this type from the input type.

impl From<Vector<DateHour>> for ConstantImpl

fn from(value: Vector<DateHour>) -> Self

Converts to this type from the input type.

impl From<Vector<DateTime>> for ConstantImpl

fn from(value: Vector<DateTime>) -> Self

Converts to this type from the input type.

impl From<Vector<Decimal128>> for ConstantImpl

fn from(value: Vector<Decimal128>) -> Self

Converts to this type from the input type.

impl From<Vector<Decimal32>> for ConstantImpl

fn from(value: Vector<Decimal32>) -> Self

Converts to this type from the input type.

impl From<Vector<Decimal64>> for ConstantImpl

fn from(value: Vector<Decimal64>) -> Self

Converts to this type from the input type.

impl From<Vector<DolphinString>> for ConstantImpl

fn from(value: Vector<DolphinString>) -> Self

Converts to this type from the input type.

impl From<Vector<Double>> for ConstantImpl

fn from(value: Vector<Double>) -> Self

Converts to this type from the input type.

impl From<Vector<Float>> for ConstantImpl

fn from(value: Vector<Float>) -> Self

Converts to this type from the input type.

impl From<Vector<Int>> for ConstantImpl

fn from(value: Vector<Int>) -> Self

Converts to this type from the input type.

impl From<Vector<Long>> for ConstantImpl

fn from(value: Vector<Long>) -> Self

Converts to this type from the input type.

impl From<Vector<Minute>> for ConstantImpl

fn from(value: Vector<Minute>) -> Self

Converts to this type from the input type.

impl From<Vector<Month>> for ConstantImpl

fn from(value: Vector<Month>) -> Self

Converts to this type from the input type.

impl From<Vector<NanoTime>> for ConstantImpl

fn from(value: Vector<NanoTime>) -> Self

Converts to this type from the input type.

impl From<Vector<NanoTimestamp>> for ConstantImpl

fn from(value: Vector<NanoTimestamp>) -> Self

Converts to this type from the input type.

impl From<Vector<Second>> for ConstantImpl

fn from(value: Vector<Second>) -> Self

Converts to this type from the input type.

impl From<Vector<Short>> for ConstantImpl

fn from(value: Vector<Short>) -> Self

Converts to this type from the input type.

impl From<Vector<Symbol>> for ConstantImpl

fn from(value: Vector<Symbol>) -> Self

Converts to this type from the input type.

impl From<Vector<Time>> for ConstantImpl

fn from(value: Vector<Time>) -> Self

Converts to this type from the input type.

impl From<Vector<Timestamp>> for ConstantImpl

fn from(value: Vector<Timestamp>) -> Self

Converts to this type from the input type.

impl From<Vector<Void>> for ConstantImpl

fn from(value: Vector<Void>) -> Self

Converts to this type from the input type.

impl From<VectorImpl> for ConstantImpl

fn from(value: VectorImpl) -> Self

Converts to this type from the input type.

impl From<Void> for ConstantImpl

fn from(value: Void) -> Self

Converts to this type from the input type.

impl PartialEq for ConstantImpl

fn eq(&self, other: &ConstantImpl) -> bool

Tests for self and other values to be equal, and is used by ==.

1.0.0 · Source§

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl TryFrom<ConstantImpl> for Blob

type Error = Error

The type returned in the event of a conversion error.

fn try_from(value: ConstantImpl) -> Result<Self, Self::Error>

Performs the conversion.

impl TryFrom<ConstantImpl> for Bool

type Error = Error

The type returned in the event of a conversion error.

fn try_from(value: ConstantImpl) -> Result<Self, Self::Error>

Performs the conversion.

impl TryFrom<ConstantImpl> for Char

type Error = Error

The type returned in the event of a conversion error.

fn try_from(value: ConstantImpl) -> Result<Self, Self::Error>

Performs the conversion.

impl TryFrom<ConstantImpl> for Date

type Error = Error

The type returned in the event of a conversion error.

fn try_from(value: ConstantImpl) -> Result<Self, Self::Error>

Performs the conversion.

impl TryFrom<ConstantImpl> for DateHour

type Error = Error

The type returned in the event of a conversion error.

fn try_from(value: ConstantImpl) -> Result<Self, Self::Error>

Performs the conversion.

impl TryFrom<ConstantImpl> for DateTime

type Error = Error

The type returned in the event of a conversion error.

fn try_from(value: ConstantImpl) -> Result<Self, Self::Error>

Performs the conversion.

impl TryFrom<ConstantImpl> for Decimal128

type Error = Error

The type returned in the event of a conversion error.

fn try_from(value: ConstantImpl) -> Result<Self, Self::Error>

Performs the conversion.

impl TryFrom<ConstantImpl> for Decimal32

type Error = Error

The type returned in the event of a conversion error.

fn try_from(value: ConstantImpl) -> Result<Self, Self::Error>

Performs the conversion.

impl TryFrom<ConstantImpl> for Decimal64

type Error = Error

The type returned in the event of a conversion error.

fn try_from(value: ConstantImpl) -> Result<Self, Self::Error>

Performs the conversion.

impl TryFrom<ConstantImpl> for DictionaryImpl

type Error = Error

The type returned in the event of a conversion error.

fn try_from(value: ConstantImpl) -> Result<Self, Self::Error>

Performs the conversion.

impl TryFrom<ConstantImpl> for DolphinString

type Error = Error

The type returned in the event of a conversion error.

fn try_from(value: ConstantImpl) -> Result<Self, Self::Error>

Performs the conversion.

impl TryFrom<ConstantImpl> for Double

type Error = Error

The type returned in the event of a conversion error.

fn try_from(value: ConstantImpl) -> Result<Self, Self::Error>

Performs the conversion.

impl TryFrom<ConstantImpl> for Float

type Error = Error

The type returned in the event of a conversion error.

fn try_from(value: ConstantImpl) -> Result<Self, Self::Error>

Performs the conversion.

impl TryFrom<ConstantImpl> for Int

type Error = Error

The type returned in the event of a conversion error.

fn try_from(value: ConstantImpl) -> Result<Self, Self::Error>

Performs the conversion.

impl TryFrom<ConstantImpl> for Long

type Error = Error

The type returned in the event of a conversion error.

fn try_from(value: ConstantImpl) -> Result<Self, Self::Error>

Performs the conversion.

impl TryFrom<ConstantImpl> for Minute

type Error = Error

The type returned in the event of a conversion error.

fn try_from(value: ConstantImpl) -> Result<Self, Self::Error>

Performs the conversion.

impl TryFrom<ConstantImpl> for Month

type Error = Error

The type returned in the event of a conversion error.

fn try_from(value: ConstantImpl) -> Result<Self, Self::Error>

Performs the conversion.

impl TryFrom<ConstantImpl> for NanoTime

type Error = Error

The type returned in the event of a conversion error.

fn try_from(value: ConstantImpl) -> Result<Self, Self::Error>

Performs the conversion.

impl TryFrom<ConstantImpl> for NanoTimestamp

type Error = Error

The type returned in the event of a conversion error.

fn try_from(value: ConstantImpl) -> Result<Self, Self::Error>

Performs the conversion.

impl TryFrom<ConstantImpl> for PairImpl

type Error = Error

The type returned in the event of a conversion error.

fn try_from(value: ConstantImpl) -> Result<Self, Self::Error>

Performs the conversion.

impl TryFrom<ConstantImpl> for ScalarImpl

type Error = Error

The type returned in the event of a conversion error.

fn try_from(value: ConstantImpl) -> Result<Self, Self::Error>

Performs the conversion.

impl TryFrom<ConstantImpl> for Second

type Error = Error

The type returned in the event of a conversion error.

fn try_from(value: ConstantImpl) -> Result<Self, Self::Error>

Performs the conversion.

impl TryFrom<ConstantImpl> for SetImpl

type Error = Error

The type returned in the event of a conversion error.

fn try_from(value: ConstantImpl) -> Result<Self, Self::Error>

Performs the conversion.

impl TryFrom<ConstantImpl> for Short

type Error = Error

The type returned in the event of a conversion error.

fn try_from(value: ConstantImpl) -> Result<Self, Self::Error>

Performs the conversion.

impl TryFrom<ConstantImpl> for Symbol

type Error = Error

The type returned in the event of a conversion error.

fn try_from(value: ConstantImpl) -> Result<Self, Self::Error>

Performs the conversion.

impl TryFrom<ConstantImpl> for Table

type Error = Error

The type returned in the event of a conversion error.

fn try_from(value: ConstantImpl) -> Result<Self, Self::Error>

Performs the conversion.

impl TryFrom<ConstantImpl> for Time

type Error = Error

The type returned in the event of a conversion error.

fn try_from(value: ConstantImpl) -> Result<Self, Self::Error>

Performs the conversion.

impl TryFrom<ConstantImpl> for Timestamp

type Error = Error

The type returned in the event of a conversion error.

fn try_from(value: ConstantImpl) -> Result<Self, Self::Error>

Performs the conversion.

impl TryFrom<ConstantImpl> for VectorImpl

type Error = Error

The type returned in the event of a conversion error.

fn try_from(value: ConstantImpl) -> Result<Self, Self::Error>

Performs the conversion.

impl TryFrom<ConstantImpl> for Void

type Error = Error

The type returned in the event of a conversion error.

fn try_from(value: ConstantImpl) -> Result<Self, Self::Error>

Performs the conversion.

impl Eq for ConstantImpl

impl StructuralPartialEq for ConstantImpl

Auto Trait Implementations§

impl Freeze for ConstantImpl

impl RefUnwindSafe for ConstantImpl

impl Send for ConstantImpl

impl Sync for ConstantImpl

impl Unpin for ConstantImpl

impl UnwindSafe for ConstantImpl

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> CloneToUninit for T
where T: Clone,

unsafe fn clone_to_uninit(&self, dest: *mut u8)

🔬This is a nightly-only experimental API. (clone_to_uninit)

Performs copy-assignment from self to dest. 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> ToOwned for T
where T: Clone,

type Owned = T

The resulting type after obtaining ownership.

fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more

fn clone_into(&self, target: &mut T)

Uses borrowed data to replace owned data, usually by cloning. Read more

impl<T> ToString for T
where T: Display + ?Sized,

fn to_string(&self) -> String

Converts the given value to a String. 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.