Enum PreambleSemantics 

pub enum PreambleSemantics {
    AbsentFromWindow,
    Full,
}

What a version-2 preamble is a snapshot of (RFC 13 §4.3’s pre-roll bullet): the values at the moment the ring began are not recoverable, so the honest substitute has to be named rather than implied.

Variants

AbsentFromWindow

The current state of what the ring cannot show: only keys absent from the retained window were fetched at trigger time. A key the ring holds already has its story in the pre-roll rows.

Full

The full current state under the watched selectors at trigger time, ring or no ring — every fetched key, so a reader that seeds from the preamble alone has the whole base.

Trait Implementations

impl Clone for PreambleSemantics

fn clone(&self) -> PreambleSemantics

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for PreambleSemantics

impl Debug for PreambleSemantics

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for PreambleSemantics

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Eq for PreambleSemantics

impl PartialEq for PreambleSemantics

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

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl Serialize for PreambleSemantics

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

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl StructuralPartialEq for PreambleSemantics