Enum MissingOrNull

pub enum MissingOrNull<T> {
    Missing,
    Null,
    Value(T),
}

Variants

Missing

Null

Value(T)

Implementations

impl<T> MissingOrNull<T>

pub fn update(&mut self, other: Self)

Trait Implementations

impl<T: Clone> Clone for MissingOrNull<T>

fn clone(&self) -> MissingOrNull<T>

Returns a copy of the value.

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

Performs copy-assignment from source.

impl<T: Debug> Debug for MissingOrNull<T>

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

Formats the value using the given formatter.

impl<T> Default for MissingOrNull<T>

fn default() -> Self

Returns the “default value” for a type.

impl<T> From<MissingOrNull<T>> for Option<T>

fn from(value: MissingOrNull<T>) -> Option<T>

Converts to this type from the input type.

impl<T> From<Option<T>> for MissingOrNull<T>

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

Converts to this type from the input type.

impl<T: PartialEq> PartialEq for MissingOrNull<T>

fn eq(&self, other: &MissingOrNull<T>) -> 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<T: Copy> Copy for MissingOrNull<T>

impl<T> StructuralPartialEq for MissingOrNull<T>