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Guard

Struct Guard 

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pub struct Guard(/* private fields */);
Expand description

Guard to access key-value pairs

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impl Guard

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pub fn into_inner_if( self, pred: impl Fn(&UserKey) -> bool, ) -> Result<(UserKey, Option<UserValue>)>

Accesses the key-value pair if the predicate returns true.

The predicate receives the key - if returning false, the value may not be loaded if the tree is key-value separated.

§Errors

Will return Err if an IO error occurs.

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pub fn into_inner(self) -> Result<KvPair>

Returns the key-value tuple.

§Errors

Will return Err if an IO error occurs.

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pub fn key(self) -> Result<UserKey>

Returns the key.

§Errors

Will return Err if an IO error occurs.

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pub fn size(self) -> Result<u32>

Returns the value size.

§Errors

Will return Err if an IO error occurs.

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pub fn value(self) -> Result<UserValue>

Returns the value.

§Errors

Will return Err if an IO error occurs.

Auto Trait Implementations§

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impl Freeze for Guard

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impl !RefUnwindSafe for Guard

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impl Send for Guard

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impl Sync for Guard

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impl Unpin for Guard

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impl !UnwindSafe for Guard

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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> Pointable for T

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const ALIGN: usize

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

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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>,

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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.