std_shims::collections::hash_map

Struct RawEntryBuilder

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pub struct RawEntryBuilder<'a, K, V, S>
where K: 'a, V: 'a, S: 'a,
{ /* private fields */ }
🔬This is a nightly-only experimental API. (hash_raw_entry)
Available on crate feature std only.
Expand description

A builder for computing where in a HashMap a key-value pair would be stored.

See the HashMap::raw_entry docs for usage examples.

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impl<'a, K, V, S> RawEntryBuilder<'a, K, V, S>
where S: BuildHasher,

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pub fn from_key<Q>(self, k: &Q) -> Option<(&'a K, &'a V)>
where K: Borrow<Q>, Q: Hash + Eq + ?Sized,

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

Access an entry by key.

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pub fn from_key_hashed_nocheck<Q>( self, hash: u64, k: &Q, ) -> Option<(&'a K, &'a V)>
where K: Borrow<Q>, Q: Hash + Eq + ?Sized,

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

Access an entry by a key and its hash.

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pub fn from_hash<F>(self, hash: u64, is_match: F) -> Option<(&'a K, &'a V)>
where F: FnMut(&K) -> bool,

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

Access an entry by hash.

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impl<K, V, S> Debug for RawEntryBuilder<'_, K, V, S>

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

Formats the value using the given formatter. Read more

Auto Trait Implementations§

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impl<'a, K, V, S> Freeze for RawEntryBuilder<'a, K, V, S>

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impl<'a, K, V, S> RefUnwindSafe for RawEntryBuilder<'a, K, V, S>

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impl<'a, K, V, S> Send for RawEntryBuilder<'a, K, V, S>
where S: Sync, K: Sync, V: Sync,

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impl<'a, K, V, S> Sync for RawEntryBuilder<'a, K, V, S>
where S: Sync, K: Sync, V: Sync,

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impl<'a, K, V, S> Unpin for RawEntryBuilder<'a, K, V, S>

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impl<'a, K, V, S> UnwindSafe for RawEntryBuilder<'a, K, V, S>

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.

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: 8 bytes