Struct std::collections::hash_map::RawEntryBuilder

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pub struct RawEntryBuilder<'a, K: 'a, V: 'a, S: 'a> { /* private fields */ }

🔬 This is a nightly-only experimental API. (hash_raw_entry #56167)

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.

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

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

🔬 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,

const: unstable · source

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,

const: unstable · source

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

const: unstable · source

fn from(t: T) -> T

Returns the argument unchanged.

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impl<T, U> Into for T where
U: From<T>,

const: unstable · source

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 for T where
U: Into<T>,

type Error = Infallible

The type returned in the event of a conversion error.

const: unstable · source

fn try_from(value: U) -> Result<T, <T as TryFrom>::Error>

Performs the conversion.

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impl<T, U> TryInto for T where
U: TryFrom<T>,

type Error = >::Error

The type returned in the event of a conversion error.

const: unstable · source

fn try_into(self) -> Result<U, >::Error>

Performs the conversion.

Struct std::collections::hash_map::RawEntryBuilder

Implementations

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

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

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

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

Trait Implementations

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

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

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

impl<T> Any for T where
T: 'static + ?Sized,

fn type_id(&self) -> TypeId

impl<T> Borrow<T> for T where
T: ?Sized,

fn borrow(&self) -> &T

impl<T> BorrowMut<T> for T where
T: ?Sized,

fn borrow_mut(&mut self) -> &mut T

impl<T> From<T> for T

fn from(t: T) -> T

impl<T, U> Into<U> for T where
U: From<T>,

fn into(self) -> U

impl<T, U> TryFrom<U> for T where
U: Into<T>,

type Error = Infallible

fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

impl<T, U> TryInto<U> for T where
U: TryFrom<T>,

type Error = <U as TryFrom<T>>::Error

fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Struct std::collections::hash_map::RawEntryBuilder

Implementations

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

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

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

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

Trait Implementations

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

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

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

impl<T> Any for T where T: 'static + ?Sized,

fn type_id(&self) -> TypeId

impl<T> Borrow<T> for T where T: ?Sized,

fn borrow(&self) -> &T

impl<T> BorrowMut<T> for T where T: ?Sized,

fn borrow_mut(&mut self) -> &mut T

impl<T> From<T> for T

fn from(t: T) -> T

impl<T, U> Into<U> for T where U: From<T>,

fn into(self) -> U

impl<T, U> TryFrom<U> for T where U: Into<T>,

type Error = Infallible

fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

impl<T, U> TryInto<U> for T where U: TryFrom<T>,

type Error = <U as TryFrom<T>>::Error

fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

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

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

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

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

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> UnwindSafe for RawEntryBuilder<'a, K, V, S> where
K: RefUnwindSafe,
S: RefUnwindSafe,
V: RefUnwindSafe,

impl<T> Any for T where
T: 'static + ?Sized,

impl<T> Borrow<T> for T where
T: ?Sized,

impl<T> BorrowMut<T> for T where
T: ?Sized,

impl<T, U> Into<U> for T where
U: From<T>,

impl<T, U> TryFrom<U> for T where
U: Into<T>,

impl<T, U> TryInto<U> for T where
U: TryFrom<T>,