Struct Fact 

pub struct Fact {
    pub id: String,
    pub subject: String,
    pub predicate: String,
    pub object: MemoryValue,
    pub confidence: f64,
    pub created_at: DateTime<Utc>,
    pub updated_at: DateTime<Utc>,
    pub metadata: HashMap<String, String>,
}

A semantic fact stored in memory

Fields

id: String

Unique identifier for the fact

subject: String

The subject of the fact (e.g., “user:123”, “product:456”)

predicate: String

The predicate/relation (e.g., “prefers”, “is_located_in”, “purchased”)

object: MemoryValue

The object/value (can be any type)

confidence: f64

Confidence score (0.0 to 1.0)

created_at: DateTime<Utc>

When the fact was created

updated_at: DateTime<Utc>

When the fact was last updated

metadata: HashMap<String, String>

Optional metadata

Implementations

impl Fact

pub fn new( subject: impl Into<String>, predicate: impl Into<String>, object: impl Into<MemoryValue>, ) -> Self

Create a new fact

pub fn with_confidence(self, confidence: f64) -> Self

Set confidence score

pub fn with_metadata( self, key: impl Into<String>, value: impl Into<String>, ) -> Self

Add metadata

Trait Implementations

impl Clone for Fact

fn clone(&self) -> Fact

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Fact

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for Fact

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Serialize for Fact

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

where __S: Serializer,

Serialize this value into the given Serde serializer.