Struct DataView

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pub struct DataView<T, D = AlignedVec>
where T: Archive, T::Archived: 'static, D: Deref<Target = [u8]> + Send + Sync,
{ /* private fields */ }
Expand description

A block of data that can be accessed as if it is the archived value T.

This allows for safe, true zero-copy deserialization avoiding unnecessary allocations if the situation does not require having an owned version of the value.

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impl<T, D> DataView<T, D>
where T: Archive, T::Archived: CheckBytes<DefaultValidator<'static>> + 'static, D: Deref<Target = [u8]> + Send + Sync,

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pub fn as_bytes(&self) -> &[u8]

Gets the bytes representation of the dataview.

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pub fn into_data(self) -> D

Consumes the bytes representation of the dataview.

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impl<T, D> DataView<T, D>
where T: Archive, T::Archived: Deserialize<T, SharedDeserializeMap> + 'static, D: Deref<Target = [u8]> + Send + Sync,

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pub fn to_owned(&self) -> Result<T, InvalidView>

Deserializes the view into it’s owned value T.

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impl<T, D> Clone for DataView<T, D>
where T: Archive, T::Archived: CheckBytes<DefaultValidator<'static>> + Debug, D: Deref<Target = [u8]> + Send + Sync + Clone,

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fn clone(&self) -> Self

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

Performs copy-assignment from source. Read more
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impl<T, D> Debug for DataView<T, D>
where T: Archive, T::Archived: CheckBytes<DefaultValidator<'static>> + Debug, D: Deref<Target = [u8]> + Send + Sync,

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

Formats the value using the given formatter. Read more
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impl<T, D> Deref for DataView<T, D>
where T: Archive, T::Archived: CheckBytes<DefaultValidator<'static>>, D: Deref<Target = [u8]> + Send + Sync,

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type Target = <T as Archive>::Archived

The resulting type after dereferencing.
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fn deref(&self) -> &Self::Target

Dereferences the value.
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impl<T, D> PartialEq<T> for DataView<T, D>
where T: Archive, T::Archived: CheckBytes<DefaultValidator<'static>> + PartialEq<T>, D: Deref<Target = [u8]> + Send + Sync,

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fn eq(&self, other: &T) -> bool

Tests for self and other values to be equal, and is used by ==.
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const fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.
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impl<T, D> PartialEq for DataView<T, D>
where T: Archive, T::Archived: CheckBytes<DefaultValidator<'static>> + PartialEq, D: Deref<Target = [u8]> + Send + Sync,

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fn eq(&self, other: &Self) -> bool

Tests for self and other values to be equal, and is used by ==.
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const fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

Auto Trait Implementations§

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impl<T, D> Freeze for DataView<T, D>
where D: Freeze,

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impl<T, D> RefUnwindSafe for DataView<T, D>

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impl<T, D> Send for DataView<T, D>
where <T as Archive>::Archived: Sync,

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impl<T, D> Sync for DataView<T, D>
where <T as Archive>::Archived: Sync,

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impl<T, D> Unpin for DataView<T, D>
where D: Unpin,

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impl<T, D> UnwindSafe for DataView<T, D>

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> ArchivePointee for T

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type ArchivedMetadata = ()

The archived version of the pointer metadata for this type.
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fn pointer_metadata( _: &<T as ArchivePointee>::ArchivedMetadata, ) -> <T as Pointee>::Metadata

Converts some archived metadata to the pointer metadata for itself.
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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> 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<F, W, T, D> Deserialize<With<T, W>, D> for F
where W: DeserializeWith<F, T, D>, D: Fallible + ?Sized, F: ?Sized,

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fn deserialize( &self, deserializer: &mut D, ) -> Result<With<T, W>, <D as Fallible>::Error>

Deserializes using the given deserializer
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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> Instrument for T

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fn instrument(self, span: Span) -> Instrumented<Self>

Instruments this type with the provided Span, returning an Instrumented wrapper. Read more
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fn in_current_span(self) -> Instrumented<Self>

Instruments this type with the current Span, returning an Instrumented wrapper. Read more
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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> LayoutRaw for T

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fn layout_raw(_: <T as Pointee>::Metadata) -> Result<Layout, LayoutError>

Gets the layout of the type.
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impl<T> Pointee for T

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type Metadata = ()

The type for metadata in pointers and references to Self.
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impl<P, T> Receiver for P
where P: Deref<Target = T> + ?Sized, T: ?Sized,

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type Target = T

🔬This is a nightly-only experimental API. (arbitrary_self_types)
The target type on which the method may be called.
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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 = 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.
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impl<T> WithSubscriber for T

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fn with_subscriber<S>(self, subscriber: S) -> WithDispatch<Self>
where S: Into<Dispatch>,

Attaches the provided Subscriber to this type, returning a WithDispatch wrapper. Read more
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fn with_current_subscriber(self) -> WithDispatch<Self>

Attaches the current default Subscriber to this type, returning a WithDispatch wrapper. Read more