VariantDecimal8

Struct VariantDecimal8 

pub struct VariantDecimal8 {
    integer: i64,
    scale: u8,
}
Expand description

Represents an 8-byte decimal value in the Variant format.

This struct stores a decimal number using a 64-bit signed integer for the coefficient and an 8-bit unsigned integer for the scale (number of decimal places). Its precision is between 10 and 18 digits.

For valid precision and scale values, see the Variant specification:

https://github.com/apache/parquet-format/blob/87f2c8bf77eefb4c43d0ebaeea1778bd28ac3609/VariantEncoding.md?plain=1#L418-L420

§Example: Create a VariantDecimal8

// Create a value representing the decimal 123456.78
let decimal = VariantDecimal8::try_new(12345678, 2).expect("Failed to create decimal");

Fields§

§integer: i64§scale: u8

Implementations§

§

impl VariantDecimal8

pub fn try_new(integer: i64, scale: u8) -> Result<VariantDecimal8, ArrowError>

pub fn integer(&self) -> i64

Returns the underlying value of the decimal.

For example, if the decimal is 123456.78, this will return 12345678.

pub fn scale(&self) -> u8

Returns the scale of the decimal (how many digits after the decimal point).

For example, if the decimal is 123456.78, this will return 2.

Trait Implementations§

§

impl Clone for VariantDecimal8

§

fn clone(&self) -> VariantDecimal8

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 Debug for VariantDecimal8

§

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

Formats the value using the given formatter. Read more
§

impl Display for VariantDecimal8

§

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

Formats the value using the given formatter. Read more
§

impl From<VariantDecimal4> for VariantDecimal8

§

fn from(decimal: VariantDecimal4) -> VariantDecimal8

Converts to this type from the input type.
§

impl From<VariantDecimal8> for Variant<'_, '_>

§

fn from(value: VariantDecimal8) -> Variant<'_, '_>

Converts to this type from the input type.
§

impl From<VariantDecimal8> for VariantDecimal16

§

fn from(decimal: VariantDecimal8) -> VariantDecimal16

Converts to this type from the input type.
§

impl PartialEq for VariantDecimal8

§

fn eq(&self, other: &VariantDecimal8) -> 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<VariantDecimal16> for VariantDecimal8

§

type Error = ArrowError

The type returned in the event of a conversion error.
§

fn try_from(decimal: VariantDecimal16) -> Result<VariantDecimal8, ArrowError>

Performs the conversion.
§

impl TryFrom<VariantDecimal8> for VariantDecimal4

§

type Error = ArrowError

The type returned in the event of a conversion error.
§

fn try_from(decimal: VariantDecimal8) -> Result<VariantDecimal4, ArrowError>

Performs the conversion.
§

impl TryFrom<i64> for VariantDecimal8

§

type Error = ArrowError

The type returned in the event of a conversion error.
§

fn try_from(integer: i64) -> Result<VariantDecimal8, ArrowError>

Performs the conversion.
§

impl Copy for VariantDecimal8

§

impl StructuralPartialEq for VariantDecimal8

Auto Trait Implementations§

Blanket Implementations§

Source§

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

Source§

fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
Source§

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

Source§

fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
Source§

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

Source§

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

Mutably borrows from an owned value. Read more
Source§

impl<T> CloneToUninit for T
where T: Clone,

Source§

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
Source§

impl<T> From<T> for T

Source§

fn from(t: T) -> T

Returns the argument unchanged.

Source§

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

Source§

fn into(self) -> U

Calls U::from(self).

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

Source§

impl<T> IntoEither for T

Source§

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
Source§

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
Source§

impl<T> ToOwned for T
where T: Clone,

Source§

type Owned = T

The resulting type after obtaining ownership.
Source§

fn to_owned(&self) -> T

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

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

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

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

Source§

fn to_string(&self) -> String

Converts the given value to a String. Read more
Source§

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

Source§

type Error = Infallible

The type returned in the event of a conversion error.
Source§

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

Performs the conversion.
Source§

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

Source§

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

The type returned in the event of a conversion error.
Source§

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

Performs the conversion.
§

impl<V, T> VZip<V> for T
where V: MultiLane<T>,

§

fn vzip(self) -> V

§

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

§

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

§

impl<T> Ungil for T
where T: Send,