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Table

Struct Table 

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pub struct Table<K, V> { /* private fields */ }
Expand description

A typed handle to one table. Cheap to construct and clone; holds only the table name and the K/V type binding.

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impl<K, V> Table<K, V>

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pub fn new(name: impl Into<String>) -> Self

Bind a typed table to name.

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pub fn name(&self) -> &str

The underlying table name.

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pub fn get(&self, tx: &impl Readable, key: &K) -> StoreResult<Option<V>>

Fetch the value for key, or None if absent. Accepts any Readable, so it reads from a read transaction or a write transaction’s own uncommitted state.

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pub fn put(&self, tx: &mut impl WriteTx, key: &K, value: &V) -> StoreResult<()>

Insert or overwrite keyvalue.

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pub fn delete(&self, tx: &mut impl WriteTx, key: &K) -> StoreResult<bool>

Remove key. Returns true if a value was present.

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pub fn range( &self, tx: &impl Readable, lo: &K, hi: &K, ) -> StoreResult<Vec<(K, V)>>

Return the decoded (key, value) pairs in the half-open range [lo, hi), in ascending logical key order.

Trait Implementations§

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impl<K: Clone, V: Clone> Clone for Table<K, V>

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fn clone(&self) -> Table<K, V>

Returns a duplicate of the value. Read more
1.0.0 (const: unstable) · Source§

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

Performs copy-assignment from source. Read more
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impl<K: Debug, V: Debug> Debug for Table<K, V>

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

Formats the value using the given formatter. Read more

Auto Trait Implementations§

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impl<K, V> Freeze for Table<K, V>
where PhantomData<fn() -> (K, V)>: Freeze,

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impl<K, V> RefUnwindSafe for Table<K, V>

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impl<K, V> Send for Table<K, V>
where PhantomData<fn() -> (K, V)>: Send,

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impl<K, V> Sync for Table<K, V>
where PhantomData<fn() -> (K, V)>: Sync,

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impl<K, V> Unpin for Table<K, V>
where PhantomData<fn() -> (K, V)>: Unpin,

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impl<K, V> UnsafeUnpin for Table<K, V>

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impl<K, V> UnwindSafe for Table<K, V>

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<ST, DT> CastableFrom<ST, Initialized, Initialized> for DT
where ST: ?Sized, DT: ?Sized,

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impl<ST, DT> CastableFrom<ST, Uninit, Uninit> for DT
where ST: ?Sized, DT: ?Sized,

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impl<T> CloneToUninit for T
where T: Clone,

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unsafe fn clone_to_uninit(&self, dest: *mut u8)

🔬This is a nightly-only experimental API. (clone_to_uninit)
Performs copy-assignment from self to dest. 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> Read<Exclusive, BecauseExclusive> for T
where T: ?Sized,

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impl<T> Same for T

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type Output = T

Should always be Self
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impl<T> ToOwned for T
where T: Clone,

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type Owned = T

The resulting type after obtaining ownership.
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fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more
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fn clone_into(&self, target: &mut T)

Uses borrowed data to replace owned data, usually by cloning. Read more
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impl<T, U> TryFrom<U> for T
where U: Into<T>,

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type Error = !

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.
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impl<V, T> VZip<V> for T
where V: MultiLane<T>,

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fn vzip(self) -> V