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MaterializedSet

Struct MaterializedSet 

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pub struct MaterializedSet {
    pub order_excluded: u64,
    /* private fields */
}
Expand description

One shard’s materialized result set: ordered (order_value, key) members with the bounded top-K discipline (keep K + Δ where Δ = K/4; underflow requests a local rebuild from the base indexes — RFC §2).

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§order_excluded: u64

Members excluded because they’re absent from the order index.

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impl MaterializedSet

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pub fn new(top_k: u32, desc: bool) -> Self

New set with the declared bound (0 = unbounded) and order direction (the bound evicts from the view’s WORST end).

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pub fn apply( &mut self, key: &[u8], member: bool, order: Option<IndexValue>, ) -> bool

Apply one key’s membership verdict + order value. Returns true if the set UNDERFLOWED below K after a removal (the caller must schedule a local rebuild).

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pub fn page( &self, after: Option<&(IndexValue, Vec<u8>)>, limit: usize, desc: bool, ) -> Vec<(IndexValue, Vec<u8>)>

Ordered page. desc = false: ascending from just past after; desc = true: DESCENDING from just below after (a DESC view must take each shard’s LARGEST members — taking the ascending head and reversing at the merge yields the wrong member set).

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pub fn len(&self) -> usize

Member count.

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pub fn is_empty(&self) -> bool

Empty?

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pub fn clear(&mut self)

Wipe (rebuild path).

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pub fn approx_bytes(&self) -> u64

Approximate heap bytes (RFC §5 formula’s measured side).

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impl Debug for MaterializedSet

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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 Default for MaterializedSet

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fn default() -> MaterializedSet

Returns the “default value” for a type. Read more

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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> 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, 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.