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MultiValueSet

Struct MultiValueSet 

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pub struct MultiValueSet {
    pub values: Vec<Vec<u8>>,
}
Expand description

A set of concurrent values for MV-Register semantics.

Used with the Multi-Value merge strategy to preserve all concurrent values when conflicts occur, allowing the application to resolve them later or present all options to the user.

§Serialization Format

Values are serialized as: [4-byte count][4-byte len1][value1][4-byte len2][value2]...

§Example

use prolly::MultiValueSet;

let mv = MultiValueSet::single(b"value1".to_vec());
let mv2 = MultiValueSet::single(b"value2".to_vec());
let merged = mv.merge(&mv2);
assert_eq!(merged.values.len(), 2);

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§values: Vec<Vec<u8>>

All concurrent values (sorted for deterministic ordering)

Implementations§

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impl MultiValueSet

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pub fn single(value: Vec<u8>) -> Self

Create from a single value.

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pub fn from_values(values: Vec<Vec<u8>>) -> Self

Create from multiple values.

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pub fn merge(&self, other: &Self) -> Self

Merge two sets, combining all unique values.

The resulting set contains all values from both sets, sorted lexicographically for deterministic ordering.

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pub fn to_bytes(&self) -> Vec<u8>

Serialize to bytes (length-prefixed values).

Format: [4-byte count][4-byte len][value]...

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pub fn from_bytes(bytes: &[u8]) -> Option<Self>

Deserialize from bytes.

Returns None if the byte slice is malformed.

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pub fn is_empty(&self) -> bool

Check if the set is empty.

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pub fn len(&self) -> usize

Get the number of values in the set.

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impl Clone for MultiValueSet

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fn clone(&self) -> MultiValueSet

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 Debug for MultiValueSet

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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 MultiValueSet

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impl PartialEq for MultiValueSet

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fn eq(&self, other: &MultiValueSet) -> 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 StructuralPartialEq for MultiValueSet

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<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> IntoEither for T

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fn into_either(self, into_left: bool) -> Either<Self, Self>

Converts self into a Left variant of Either<Self, Self> if into_left is true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more
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fn into_either_with<F>(self, into_left: F) -> Either<Self, Self>
where F: FnOnce(&Self) -> bool,

Converts self into a Left variant of Either<Self, Self> if into_left(&self) returns true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more
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impl<T> Pointable for T

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const ALIGN: usize

The alignment of pointer.
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type Init = T

The type for initializers.
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unsafe fn init(init: <T as Pointable>::Init) -> usize

Initializes a with the given initializer. Read more
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unsafe fn deref<'a>(ptr: usize) -> &'a T

Dereferences the given pointer. Read more
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unsafe fn deref_mut<'a>(ptr: usize) -> &'a mut T

Mutably dereferences the given pointer. Read more
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unsafe fn drop(ptr: usize)

Drops the object pointed to by the given pointer. Read more
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impl<T> Same for T

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type Output = T

Should always be Self
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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.