Enum clepsydra::ExtVal

pub enum ExtVal<L: Lang> {
    Initial,
    Defined(L::Val),
    Deleted,
}

An ExtVal extends the normal Lang::Val type with two extra sentinel values to represent not-yet-written or deleted data in a crate::Store.

Variants

Initial

Defined(L::Val)

Deleted

Trait Implementations

impl<L: Clone + Lang> Clone for ExtVal<L> where
    L::Val: Clone, 

pub fn clone(&self) -> ExtVal<L>

Returns a copy of the value.

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

Performs copy-assignment from source.

impl<L: Debug + Lang> Debug for ExtVal<L> where
    L::Val: Debug, 

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

Formats the value using the given formatter.

impl<'de, L: Lang> Deserialize<'de> for ExtVal<L>

pub fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error> where
    __D: Deserializer<'de>, 

Deserialize this value from the given Serde deserializer.

impl<L: Eq + Lang> Eq for ExtVal<L> where
    L::Val: Eq, 

impl<L: Hash + Lang> Hash for ExtVal<L> where
    L::Val: Hash, 

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

Feeds this value into the given Hasher.

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

Feeds a slice of this type into the given Hasher.

impl<L: Ord + Lang> Ord for ExtVal<L> where
    L::Val: Ord, 

pub fn cmp(&self, other: &ExtVal<L>) -> Ordering

This method returns an Ordering between self and other.

#[must_use]pub fn max(self, other: Self) -> Self

Compares and returns the maximum of two values.

#[must_use]pub fn min(self, other: Self) -> Self

Compares and returns the minimum of two values.

#[must_use]pub fn clamp(self, min: Self, max: Self) -> Self

Restrict a value to a certain interval.

impl<L: PartialEq + Lang> PartialEq<ExtVal<L>> for ExtVal<L> where
    L::Val: PartialEq, 

pub fn eq(&self, other: &ExtVal<L>) -> bool

This method tests for self and other values to be equal, and is used by ==.

pub fn ne(&self, other: &ExtVal<L>) -> bool

This method tests for !=.

impl<L: PartialOrd + Lang> PartialOrd<ExtVal<L>> for ExtVal<L> where
    L::Val: PartialOrd, 

pub fn partial_cmp(&self, other: &ExtVal<L>) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

pub fn lt(&self, other: &ExtVal<L>) -> bool

This method tests less than (for self and other) and is used by the < operator.

pub fn le(&self, other: &ExtVal<L>) -> bool

This method tests less than or equal to (for self and other) and is used by the <= operator.

pub fn gt(&self, other: &ExtVal<L>) -> bool

This method tests greater than (for self and other) and is used by the > operator.

pub fn ge(&self, other: &ExtVal<L>) -> bool

This method tests greater than or equal to (for self and other) and is used by the >= operator.

impl<L: Lang> Serialize for ExtVal<L>

pub fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error> where
    __S: Serializer, 

Serialize this value into the given Serde serializer.

impl<L: Lang> StructuralEq for ExtVal<L>

impl<L: Lang> StructuralPartialEq for ExtVal<L>