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ColumnData

Enum ColumnData

pub enum ColumnData {
    Number(Float64Column),
    Decimal(DecimalColumn),
    String(StringColumn),
    Boolean(BooleanColumn),
    Array(ArrayColumn),
}

Expand description

What a value column holds: numbers, exact decimals, text, true/false values, or arrays.

Variants§

Number(Float64Column)

Numbers (f64, NaN marks a gap).

Decimal(DecimalColumn)

Exact decimals.

String(StringColumn)

Text.

Boolean(BooleanColumn)

True/false values.

Array(ArrayColumn)

Arrays of scalars.

Implementations§

impl ColumnData

pub fn len(&self) -> usize

Number of values.

pub fn is_empty(&self) -> bool

true when there are no values.

pub fn missing_count(&self) -> usize

Number of gaps.

pub fn is_present(&self, i: usize) -> bool

True when row i holds a value. Panics if i is out of range.

pub fn kind(&self) -> ColumnKind

What the column holds: ColumnKind::Number, Decimal, String, Boolean or Array.

Trait Implementations§

impl Clone for ColumnData

fn clone(&self) -> Self

Returns a duplicate of the value. Read more

1.0.0 (const: unstable) · Source§

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

Performs copy-assignment from source. Read more

impl Debug for ColumnData

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

Formats the value using the given formatter. Read more

impl From<ArrayColumn> for ColumnData

fn from(c: ArrayColumn) -> Self

Converts to this type from the input type.

impl From<BooleanColumn> for ColumnData

fn from(c: BooleanColumn) -> Self

Converts to this type from the input type.

impl From<DecimalColumn> for ColumnData

fn from(c: DecimalColumn) -> Self

Converts to this type from the input type.

impl From<Float64Column> for ColumnData

fn from(c: Float64Column) -> Self

Converts to this type from the input type.

impl From<StringColumn> for ColumnData

fn from(c: StringColumn) -> Self

Converts to this type from the input type.

impl From<Vec<&str>> for ColumnData

fn from(v: Vec<&str>) -> Self

Converts to this type from the input type.

impl From<Vec<Option<&str>>> for ColumnData

fn from(v: Vec<Option<&str>>) -> Self

Converts to this type from the input type.

impl From<Vec<Option<String>>> for ColumnData

fn from(v: Vec<Option<String>>) -> Self

Converts to this type from the input type.

impl From<Vec<Option<Vec<Scalar>>>> for ColumnData

fn from(v: Vec<Option<Vec<Scalar>>>) -> Self

Converts to this type from the input type.

impl From<Vec<Option<bool>>> for ColumnData

fn from(v: Vec<Option<bool>>) -> Self

Converts to this type from the input type.

impl From<Vec<Option<f64>>> for ColumnData

fn from(v: Vec<Option<f64>>) -> Self

Converts to this type from the input type.

impl From<Vec<String>> for ColumnData

fn from(v: Vec<String>) -> Self

Converts to this type from the input type.

impl From<Vec<Vec<Scalar>>> for ColumnData

fn from(v: Vec<Vec<Scalar>>) -> Self

Converts to this type from the input type.

impl From<Vec<bool>> for ColumnData

fn from(v: Vec<bool>) -> Self

Converts to this type from the input type.

impl From<Vec<f64>> for ColumnData

fn from(v: Vec<f64>) -> Self

Converts to this type from the input type.

impl<const N: usize> From<[&str; N]> for ColumnData

fn from(values: [&str; N]) -> Self

Converts to this type from the input type.

impl<const N: usize> From<[Option<&str>; N]> for ColumnData

fn from(values: [Option<&str>; N]) -> Self

Converts to this type from the input type.

impl<const N: usize> From<[Option<String>; N]> for ColumnData

fn from(values: [Option<String>; N]) -> Self

Converts to this type from the input type.

impl<const N: usize> From<[Option<Vec<Scalar>>; N]> for ColumnData

fn from(values: [Option<Vec<Scalar>>; N]) -> Self

Converts to this type from the input type.

impl<const N: usize> From<[Option<bool>; N]> for ColumnData

fn from(values: [Option<bool>; N]) -> Self

Converts to this type from the input type.

impl<const N: usize> From<[Option<f64>; N]> for ColumnData

fn from(values: [Option<f64>; N]) -> Self

Converts to this type from the input type.

impl<const N: usize> From<[String; N]> for ColumnData

fn from(values: [String; N]) -> Self

Converts to this type from the input type.

impl<const N: usize> From<[Vec<Scalar>; N]> for ColumnData

fn from(values: [Vec<Scalar>; N]) -> Self

Converts to this type from the input type.

impl<const N: usize> From<[bool; N]> for ColumnData

fn from(values: [bool; N]) -> Self

Converts to this type from the input type.

impl<const N: usize> From<[f64; N]> for ColumnData

fn from(values: [f64; N]) -> Self

Converts to this type from the input type.

impl PartialEq for ColumnData

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

Equality operator ==. Read more

1.0.0 (const: unstable) · Source§

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

Inequality operator !=. Read more

impl StructuralPartialEq for ColumnData

Auto Trait Implementations§

impl !RefUnwindSafe for ColumnData

impl !UnwindSafe for ColumnData

impl Freeze for ColumnData

impl Send for ColumnData

impl Sync for ColumnData

impl Unpin for ColumnData

impl UnsafeUnpin for ColumnData

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<ST, DT> CastableFrom<ST, Initialized, Initialized> for DT
where ST: ?Sized, DT: ?Sized,

impl<ST, DT> CastableFrom<ST, Uninit, Uninit> for DT
where ST: ?Sized, DT: ?Sized,

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> ErasedDestructor for T
where T: 'static,

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> Pointable for T

const ALIGN: usize

The alignment of pointer.

type Init = T

The type for initializers.

unsafe fn init(init: <T as Pointable>::Init) -> usize

Initializes a with the given initializer. Read more

unsafe fn deref<'a>(ptr: usize) -> &'a T

Dereferences the given pointer. Read more

unsafe fn deref_mut<'a>(ptr: usize) -> &'a mut T

Mutably dereferences the given pointer. Read more

unsafe fn drop(ptr: usize)

Drops the object pointed to by the given pointer. Read more

impl<T> Read<Exclusive, BecauseExclusive> for T
where T: ?Sized,

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

type Error = !

The type returned in the event of a conversion error.

fn try_from(value: U) -> Result<T, !>

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.