Struct OptValue 

pub struct OptValue<V> { /* private fields */ }

Implementations

impl<V> OptValue<V>

pub fn value(&self) -> Option<&V>

pub fn into_value(self) -> Option<V>

Trait Implementations

impl<V> Clone for OptValue<V>

where V: Clone,

fn clone(&self) -> OptValue<V>

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl<V> Debug for OptValue<V>

where V: Debug,

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

Formats the value using the given formatter.

impl<V> Default for OptValue<V>

fn default() -> OptValue<V>

Returns the “default value” for a type.

impl<'de, V> Deserialize<'de> for OptValue<V>

where V: Deserialize<'de>,

fn deserialize<__D>( __deserializer: __D, ) -> Result<OptValue<V>, <__D as Deserializer<'de>>::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl<V> From<Option<V>> for OptValue<V>

fn from(value: Option<V>) -> OptValue<V>

Converts to this type from the input type.

impl<V> Hash for OptValue<V>

where V: Hash,

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

where __H: Hasher,

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<V> Node for OptValue<V>

where V: Clone + PartialEq,

A config item for amending a mandatory value

const IS_CONTAINER: bool = true

type Update = OptValueUpdate<V>

The update type is the set of operations that can be applied to this datastructure to modify it.

type Diff = OptValueDiff<V>

The diff type is a representation of the difference between to instances of this datastructure.

fn apply_update(&mut self, update: <OptValue<V> as Node>::Update)

Apply the given update to this struct

fn as_update(&self) -> <OptValue<V> as Node>::Update

Get the update corresponding to this struct, that is the update to be applied to the default instance to obtain this struct.

fn compute_diff( &self, other: &OptValue<V>, ) -> Option<<OptValue<V> as Node>::Diff>

Get the differences between self and other.

fn apply_diff(&mut self, diff: <OptValue<V> as Node>::Diff)

Apply the given diff to this struct

fn as_diff(&self) -> <OptValue<V> as Node>::Diff

Return the diff object to apply to obtain this current updatable value.

fn merge(&self, merge: &mut OptValue<V>)

Overwrite the merge struct with the values from self.

fn is_empty(&self) -> bool

impl<V> PartialEq for OptValue<V>

where V: PartialEq,

fn eq(&self, other: &OptValue<V>) -> 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<V> Serialize for OptValue<V>

where V: Serialize,

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

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl<V> Eq for OptValue<V>

where V: Eq,

impl<V> StructuralPartialEq for OptValue<V>