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

一个用于计算 HashMap 中的键值对将存储在哪里的构建器。

有关用法示例,请参见 HashMap::raw_entry 文档。

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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)

通过键访问条目。

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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)

通过键及其哈希值访问条目。

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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)

通过哈希访问条目。

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

使用给定的格式化程序格式化该值。 Read more

Auto Trait Implementations§

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

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

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

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

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fn type_id(&self) -> TypeId

获取 selfTypeIdRead more
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impl<T> Borrow<T> for Twhere T: ?Sized,

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fn borrow(&self) -> &T

从拥有的值中一成不变地借用。 Read more
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impl<T> BorrowMut<T> for Twhere T: ?Sized,

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

从拥有的值中借用。 Read more
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impl<T> From<T> for T

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fn from(t: T) -> T

返回未更改的参数。

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

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fn into(self) -> U

调用 U::from(self)

也就是说,这种转换是 From<T> for U 实现选择执行的任何操作。

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

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type Error = Infallible

发生转换错误时返回的类型。
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fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

执行转换。
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impl<T, U> TryInto<U> for Twhere U: TryFrom<T>,

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

发生转换错误时返回的类型。
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

执行转换。