Enum OptRecordUpdate 

pub enum OptRecordUpdate<R>
where
    R: Node,
{
    NoChange,
    Clear,
    Set(R),
    Update {
        update: R::Update,
        insert: bool,
    },
}

Update for an optional record

Variants

NoChange

Do nothing

Clear

Remove the record.

If no record is present this is a noop.

Set(R)

Set the record to the provided value

Update

Update the record.

If no record is present, the insert flag controls whether a default record is inserted before applying the update.

Fields

update: R::Update

Update to apply to the record

insert: bool

Insert a default record if it is not set

Trait Implementations

impl<R> Clone for OptRecordUpdate<R>

where R: Node + Clone, R::Update: Clone,

fn clone(&self) -> OptRecordUpdate<R>

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl<R> Debug for OptRecordUpdate<R>

where R: Node + Debug, R::Update: Debug,

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

Formats the value using the given formatter.

impl<R> Default for OptRecordUpdate<R>

where R: Node,

fn default() -> OptRecordUpdate<R>

Returns the “default value” for a type.

impl<'de, R> Deserialize<'de> for OptRecordUpdate<R>

where R: Node + Deserialize<'de>, R::Update: Deserialize<'de>,

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl<R> Hash for OptRecordUpdate<R>

where R: Node + Hash, R::Update: Hash,

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<R> PartialEq for OptRecordUpdate<R>

where R: Node + PartialEq, R::Update: PartialEq,

fn eq(&self, other: &OptRecordUpdate<R>) -> 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<R> Serialize for OptRecordUpdate<R>

where R: Node + Serialize, R::Update: Serialize,

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

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl<R> Eq for OptRecordUpdate<R>

where R: Node + Eq, R::Update: Eq,

impl<R> StructuralPartialEq for OptRecordUpdate<R>

where R: Node,