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Struct std::collections::hash_map::RawEntryBuilder

pub struct RawEntryBuilder<'a, K: 'a, V: 'a, S: 'a> { /* private fields */ }
🔬This is a nightly-only experimental API. (hash_raw_entry #56167)

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

See the HashMap::raw_entry docs for usage examples.

Implementations

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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 #56167)

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 #56167)

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 #56167)

Access an entry by hash.

Trait Implementations

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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
Formats the value using the given formatter. Read more

Auto Trait Implementations

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

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>,
 
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>,
 
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.

© 2010 The Rust Project Developers
Licensed under the Apache License, Version 2.0 or the MIT license, at your option.
https://doc.rust-lang.org/std/collections/hash_map/struct.RawEntryBuilder.html