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FactAux

Struct FactAux 

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pub struct FactAux {
    pub id: FactId,
    pub tags: ListHandle,
    pub meta: BlobId,
}
Expand description

Per-fact auxiliary record: the tag-list handle and the optional metadata blob (20-byte slot, Uniform arena; layout [id 4 | ListHandle 12 | meta 4]).

Split from FactRecord so the hot 48-byte record stays hot: tags and metadata are touched only by tag-filtered queries, show/export and maintain.

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§id: FactId

Fact id — the key.

§tags: ListHandle

The fact’s tag list (TermId values) in the tag ChunkPool.

§meta: BlobId

The fact’s metadata blob in the metas heap (a canonical key→value encoding, see [crate::metadata]), or BlobId(NONE_U32) when the fact carries no metadata. The engine never interprets the bytes.

Trait Implementations§

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impl Clone for FactAux

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fn clone(&self) -> FactAux

Returns a duplicate of the value. Read more
1.0.0 (const: unstable) · Source§

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

Performs copy-assignment from source. Read more
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impl Copy for FactAux

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impl Debug for FactAux

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

Formats the value using the given formatter. Read more
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impl Eq for FactAux

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impl PartialEq for FactAux

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

Equality operator ==. Read more
1.0.0 (const: unstable) · Source§

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

Inequality operator !=. Read more
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impl Slot for FactAux

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const SIZE: usize = 20

Total size of the record in bytes.
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const KEY_LEN: usize = 4

Length of the key prefix; sorting and lookups compare only these leading bytes. Must not exceed SIZE.
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fn write(&self, out: &mut [u8])

Serializes the record into out (out.len() == SIZE), filling every byte.
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fn read(bytes: &[u8]) -> Self

Reconstructs the record from bytes (bytes.len() == SIZE).
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impl StructuralPartialEq for FactAux

Auto Trait Implementations§

Blanket Implementations§

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impl<T> Any for T
where T: 'static + ?Sized,

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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impl<T> Borrow<T> for T
where T: ?Sized,

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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impl<T> BorrowMut<T> for T
where T: ?Sized,

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fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
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impl<T> CloneToUninit for T
where T: Clone,

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unsafe fn clone_to_uninit(&self, dest: *mut u8)

🔬This is a nightly-only experimental API. (clone_to_uninit)
Performs copy-assignment from self to dest. Read more
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impl<Q, K> Equivalent<K> for Q
where Q: Eq + ?Sized, K: Borrow<Q> + ?Sized,

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fn equivalent(&self, key: &K) -> bool

Checks if this value is equivalent to the given key. Read more
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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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impl<T, U> Into<U> for T
where U: From<T>,

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fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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impl<T> ToOwned for T
where T: Clone,

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type Owned = T

The resulting type after obtaining ownership.
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fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more
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fn clone_into(&self, target: &mut T)

Uses borrowed data to replace owned data, usually by cloning. Read more
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impl<T, U> TryFrom<U> for T
where U: Into<T>,

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type Error = Infallible

The type returned in the event of a conversion error.
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fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
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impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

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type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.