Struct UnordBag

pub struct UnordBag<V> {
    inner: Vec<V>,
}

This is a collection type that tries very hard to not expose any internal iteration. This is a useful property when trying to uphold the determinism invariants imposed by the query system.

This collection type is a good choice for collections the keys of which don’t have a semantic ordering and don’t implement Hash or Eq.

See MCP 533 for more information.

Fields

inner: Vec<V>

Implementations

impl<V> UnordBag<V>

pub fn new() -> Self

pub fn len(&self) -> usize

pub fn push(&mut self, v: V)

pub fn items(&self) -> UnordItems<&V, impl Iterator<Item = &V>>

pub fn into_items(self) -> UnordItems<V, impl Iterator<Item = V>>

Trait Implementations

impl<V: Clone> Clone for UnordBag<V>

fn clone(&self) -> UnordBag<V>

Returns a copy of the value.

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

Performs copy-assignment from source.

impl<V: Debug> Debug for UnordBag<V>

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

Formats the value using the given formatter.

impl<V, __D: Decoder> Decodable<__D> for UnordBag<V>

where V: Decodable<__D>,

fn decode(__decoder: &mut __D) -> Self

impl<V: Default> Default for UnordBag<V>

fn default() -> UnordBag<V>

Returns the “default value” for a type.

impl<V, __E: Encoder> Encodable<__E> for UnordBag<V>

where V: Encodable<__E>,

fn encode(&self, __encoder: &mut __E)

impl<T> Extend<T> for UnordBag<T>

fn extend<I: IntoIterator<Item = T>>(&mut self, iter: I)

Extends a collection with the contents of an iterator.

fn extend_one(&mut self, item: A)

🔬This is a nightly-only experimental API. (extend_one)

Extends a collection with exactly one element.

fn extend_reserve(&mut self, additional: usize)

🔬This is a nightly-only experimental API. (extend_one)

Reserves capacity in a collection for the given number of additional elements.

impl<T, I: Iterator<Item = T>> From<UnordItems<T, I>> for UnordBag<T>

fn from(value: UnordItems<T, I>) -> Self

Converts to this type from the input type.

impl<HCX, V: Hash + Eq + HashStable<HCX>> HashStable<HCX> for UnordBag<V>

fn hash_stable(&self, hcx: &mut HCX, hasher: &mut StableHasher)

impl<V: PartialEq> PartialEq for UnordBag<V>

fn eq(&self, other: &UnordBag<V>) -> bool

Tests for self and other values to be equal, and is used by ==.

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

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl<V: Eq> Eq for UnordBag<V>

impl<T> !IntoIterator for UnordBag<T>

impl<V> StructuralPartialEq for UnordBag<V>

impl<T> UnordCollection for UnordBag<T>

Layout

Note: Most layout information is completely unstable and may even differ between compilations. The only exception is types with certain repr(...) attributes. Please see the Rust Reference's “Type Layout” chapter for details on type layout guarantees.

Size: 24 bytes