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AsOption

Struct AsOption 

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pub struct AsOption<T> { /* private fields */ }
Expand description

A wrapper that applies another wrapper to the values contained in a type. This can be applied to a vector to map each element, or an option to map any contained value.

See ArchiveWith for more details.

§Example

use rkyv::{
    with::{InlineAsBox, Map},
    Archive,
};

#[derive(Archive)]
struct Example<'a> {
    // This will apply `InlineAsBox` to the `&i32` contained in this option
    #[rkyv(with = Map<InlineAsBox>)]
    option: Option<&'a i32>,
    // This will apply `InlineAsBox` to each `&i32` contained in this vector
    #[rkyv(with = Map<InlineAsBox>)]
    vec: Vec<&'a i32>,
}

Trait Implementations§

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impl<A, O, const N: usize> ArchiveWith<[O; N]> for Map<A>
where A: ArchiveWith<O>,

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type Archived = [<A as ArchiveWith<O>>::Archived; N]

The archived type of Self with F.
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type Resolver = [<A as ArchiveWith<O>>::Resolver; N]

The resolver of a Self with F.
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fn resolve_with( field: &[O; N], resolver: <Map<A> as ArchiveWith<[O; N]>>::Resolver, out: Place<<Map<A> as ArchiveWith<[O; N]>>::Archived>, )

Resolves the archived type using a reference to the field type F.
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impl<A, O> ArchiveWith<Option<O>> for Map<A>
where A: ArchiveWith<O>,

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type Archived = ArchivedOption<<A as ArchiveWith<O>>::Archived>

The archived type of Self with F.
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type Resolver = Option<<A as ArchiveWith<O>>::Resolver>

The resolver of a Self with F.
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fn resolve_with( field: &Option<O>, resolver: <Map<A> as ArchiveWith<Option<O>>>::Resolver, out: Place<<Map<A> as ArchiveWith<Option<O>>>::Archived>, )

Resolves the archived type using a reference to the field type F.
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impl<A, O> ArchiveWith<Vec<O>> for Map<A>
where A: ArchiveWith<O>,

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type Archived = ArchivedVec<<A as ArchiveWith<O>>::Archived>

The archived type of Self with F.
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type Resolver = VecResolver

The resolver of a Self with F.
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fn resolve_with( field: &Vec<O>, resolver: <Map<A> as ArchiveWith<Vec<O>>>::Resolver, out: Place<<Map<A> as ArchiveWith<Vec<O>>>::Archived>, )

Resolves the archived type using a reference to the field type F.
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impl<O, A, D, const N: usize> DeserializeWith<[<A as ArchiveWith<O>>::Archived; N], [O; N], D> for Map<A>
where D: Fallible + ?Sized, A: ArchiveWith<O> + DeserializeWith<<A as ArchiveWith<O>>::Archived, O, D>,

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fn deserialize_with( field: &[<A as ArchiveWith<O>>::Archived; N], deserializer: &mut D, ) -> Result<[O; N], <D as Fallible>::Error>

Deserializes the field type F using the given deserializer.
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impl<A, O, D> DeserializeWith<ArchivedOption<<A as ArchiveWith<O>>::Archived>, Option<O>, D> for Map<A>
where D: Fallible + ?Sized, A: ArchiveWith<O> + DeserializeWith<<A as ArchiveWith<O>>::Archived, O, D>,

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fn deserialize_with( field: &ArchivedOption<<A as ArchiveWith<O>>::Archived>, d: &mut D, ) -> Result<Option<O>, <D as Fallible>::Error>

Deserializes the field type F using the given deserializer.
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impl<A, O, D> DeserializeWith<ArchivedVec<<A as ArchiveWith<O>>::Archived>, Vec<O>, D> for Map<A>
where A: ArchiveWith<O> + DeserializeWith<<A as ArchiveWith<O>>::Archived, O, D>, D: Fallible + ?Sized,

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fn deserialize_with( field: &ArchivedVec<<A as ArchiveWith<O>>::Archived>, d: &mut D, ) -> Result<Vec<O>, <D as Fallible>::Error>

Deserializes the field type F using the given deserializer.
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impl<A, O, S, const N: usize> SerializeWith<[O; N], S> for Map<A>
where S: Fallible + ?Sized, A: ArchiveWith<O> + SerializeWith<O, S>,

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fn serialize_with( field: &[O; N], serializer: &mut S, ) -> Result<<Map<A> as ArchiveWith<[O; N]>>::Resolver, <S as Fallible>::Error>

Serializes the field type F using the given serializer.
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impl<A, O, S> SerializeWith<Option<O>, S> for Map<A>
where S: Fallible + ?Sized, A: ArchiveWith<O> + SerializeWith<O, S>,

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fn serialize_with( field: &Option<O>, s: &mut S, ) -> Result<<Map<A> as ArchiveWith<Option<O>>>::Resolver, <S as Fallible>::Error>

Serializes the field type F using the given serializer.
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impl<A, O, S> SerializeWith<Vec<O>, S> for Map<A>
where S: Fallible + Allocator + Writer + ?Sized, A: ArchiveWith<O> + SerializeWith<O, S>,

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fn serialize_with( field: &Vec<O>, s: &mut S, ) -> Result<<Map<A> as ArchiveWith<Vec<O>>>::Resolver, <S as Fallible>::Error>

Serializes the field type F using the given serializer.

Auto Trait Implementations§

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impl<T> Freeze for Map<T>

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impl<T> RefUnwindSafe for Map<T>
where T: RefUnwindSafe,

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impl<T> Send for Map<T>
where T: Send,

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impl<T> Sync for Map<T>
where T: Sync,

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impl<T> Unpin for Map<T>
where T: Unpin,

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impl<T> UnsafeUnpin for Map<T>

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impl<T> UnwindSafe for Map<T>
where T: UnwindSafe,

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> 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> IntoEither for T

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fn into_either(self, into_left: bool) -> Either<Self, Self>

Converts self into a Left variant of Either<Self, Self> if into_left is true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more
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fn into_either_with<F>(self, into_left: F) -> Either<Self, Self>
where F: FnOnce(&Self) -> bool,

Converts self into a Left variant of Either<Self, Self> if into_left(&self) returns true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more
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impl<T> LayoutRaw for T

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

Returns the layout of the type.
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impl<T, N1, N2> Niching<NichedOption<T, N1>> for N2
where T: SharedNiching<N1, N2>, N1: Niching<T>, N2: Niching<T>,

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unsafe fn is_niched(niched: *const NichedOption<T, N1>) -> bool

Returns whether the given value has been niched. Read more
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fn resolve_niched(out: Place<NichedOption<T, N1>>)

Writes data to out indicating that a T is niched.
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impl<T> Pointee for T

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type Metadata = ()

The metadata type for pointers and references to this type.
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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
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impl<T> Send for T
where T: ?Sized,

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impl<T> Sync for T
where T: ?Sized,