Struct garage_db::Tree

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pub struct Tree(_, _);

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impl Tree

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pub fn db(&self) -> Db

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pub fn get<T: AsRef<[u8]>>(&self, key: T) -> Result<Option<Value>>

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pub fn len(&self) -> Result<usize>

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pub fn fast_len(&self) -> Result<Option<usize>>

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pub fn first(&self) -> Result<Option<(Value, Value)>>

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pub fn get_gt<T: AsRef<[u8]>>(&self, from: T) -> Result<Option<(Value, Value)>>

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pub fn insert<T: AsRef<[u8]>, U: AsRef<[u8]>>( &self, key: T, value: U ) -> Result<Option<Value>>

Returns the old value if there was one

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pub fn remove<T: AsRef<[u8]>>(&self, key: T) -> Result<Option<Value>>

Returns the old value if there was one

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pub fn clear(&self) -> Result<()>

Clears all values from the tree

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pub fn iter(&self) -> Result<ValueIter<'_>>

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pub fn iter_rev(&self) -> Result<ValueIter<'_>>

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pub fn range<K, R>(&self, range: R) -> Result<ValueIter<'_>>where K: AsRef<[u8]>, R: RangeBounds<K>,

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pub fn range_rev<K, R>(&self, range: R) -> Result<ValueIter<'_>>where K: AsRef<[u8]>, R: RangeBounds<K>,

Trait Implementations§

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impl Clone for Tree

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fn clone(&self) -> Tree

Returns a copy of the value. Read more
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fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more

Auto Trait Implementations§

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impl !RefUnwindSafe for Tree

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impl Send for Tree

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impl Sync for Tree

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impl Unpin for Tree

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impl !UnwindSafe for Tree

Blanket Implementations§

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impl<T> Any for Twhere 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 Twhere 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 Twhere 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 Twhere 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> Pointable for T

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const ALIGN: usize = mem::align_of::<T>()

The alignment of pointer.
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type Init = T

The type for initializers.
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unsafe fn init(init: <T as Pointable>::Init) -> usize

Initializes a with the given initializer. Read more
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unsafe fn deref<'a>(ptr: usize) -> &'a T

Dereferences the given pointer. Read more
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unsafe fn deref_mut<'a>(ptr: usize) -> &'a mut T

Mutably dereferences the given pointer. Read more
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unsafe fn drop(ptr: usize)

Drops the object pointed to by the given pointer. Read more
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impl<T> ToOwned for Twhere 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 Twhere U: Into<T>,

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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<U>>::Error>

Performs the conversion.
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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

The type returned in the event of a conversion error.
const: unstable · source§

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

Performs the conversion.