Enum Nullability

pub enum Nullability {
    NonNullable,
    Nullable,
}

Whether an instance of a DType can be `null or not

Variants

NonNullable

Instances of this DType are guaranteed to be non-nullable

Nullable

Instances of this DType may contain a null value

Implementations

impl Nullability

pub fn verbose_display(&self) -> impl Display

A self-describing displayed form.

The usual Display renders Nullability::NonNullable as the empty string.

Trait Implementations

impl BitOr for Nullability

type Output = Nullability

The resulting type after applying the | operator.

fn bitor(self, rhs: Self) -> Self::Output

Performs the | operation.

impl Clone for Nullability

fn clone(&self) -> Nullability

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for Nullability

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

Formats the value using the given formatter.

impl Default for Nullability

fn default() -> Nullability

Returns the “default value” for a type.

impl Display for Nullability

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

Formats the value using the given formatter.

impl From<Nullability> for bool

fn from(value: Nullability) -> Self

Converts to this type from the input type.

impl From<bool> for Nullability

fn from(value: bool) -> Self

Converts to this type from the input type.

impl Hash for Nullability

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl PartialEq for Nullability

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

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

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 Copy for Nullability

impl Eq for Nullability

impl StructuralPartialEq for Nullability