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Layout

vortex_layout

Struct Layout 

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pub struct Layout<V: VTable> { /* private fields */ }
Expand description

A typed layout node.

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impl Layout<Chunked>

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pub fn new( row_count: u64, dtype: DType, children: Arc<dyn LayoutChildren>, ) -> Self

Construct a chunked layout.

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pub fn with_children(&self, children: Vec<LayoutRef>) -> Self

Rebuild this layout with owned children.

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impl Layout<Dict>

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pub fn has_all_values_referenced(&self) -> bool

Returns whether every dictionary value is known to be referenced.

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impl Layout<Flat>

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pub fn new( row_count: u64, dtype: DType, segment_id: SegmentId, ctx: ReadContext, ) -> Self

Construct a flat layout without an inline array encoding tree.

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pub fn new_with_metadata( row_count: u64, dtype: DType, segment_id: SegmentId, ctx: ReadContext, array_tree: Option<ByteBuffer>, ) -> Self

Construct a flat layout with optional inline array metadata.

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pub fn segment_id(&self) -> SegmentId

Returns the serialized array segment ID.

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pub fn array_ctx(&self) -> &ReadContext

Returns the array read context.

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pub fn array_tree(&self) -> Option<&ByteBuffer>

Returns the optional inline array encoding tree.

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impl Layout<Indexed>

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pub fn try_new( data: LayoutRef, index_layouts: Vec<LayoutRef>, indexes: Vec<IndexSpec>, ) -> VortexResult<Self>

Assemble an indexed layout from a data child and one layout child per index spec.

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pub fn indexes(&self) -> &Arc<[IndexSpec]> ⓘ

The indexes attached to the data child.

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impl Layout<List>

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pub fn new( dtype: DType, elements: LayoutRef, offsets: LayoutRef, validity: Option<LayoutRef>, ) -> Self

Construct a list layout from its children.

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pub fn elements(&self) -> VortexResult<LayoutRef>

Returns the elements child.

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pub fn offsets(&self) -> VortexResult<LayoutRef>

Returns the offsets child.

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pub fn validity(&self) -> VortexResult<Option<LayoutRef>>

Returns the optional validity child.

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pub fn offsets_ptype(&self) -> PType

Returns the integer ptype used by offsets.

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pub fn elements_dtype(&self) -> &DType

Returns the list element dtype.

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impl Layout<Struct>

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pub fn new(row_count: u64, dtype: DType, children: Vec<LayoutRef>) -> Self

Construct a struct layout from owned children.

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pub fn struct_fields(&self) -> &StructFields

Returns the struct fields.

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pub fn matching_fields<F>( &self, field_mask: &[FieldMask], per_child: F, ) -> VortexResult<()>
where F: FnMut(FieldMask, usize) -> VortexResult<()>,

Invokes per_child for fields selected by field_mask.

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impl Layout<LegacyStats>

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pub fn nzones(&self) -> usize

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pub fn present_aggregates(&self) -> Arc<[String]> ⓘ

Returns display names for the zone-map aggregates stored by this layout.

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impl Layout<Zoned>

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pub fn try_new( data: LayoutRef, zones: LayoutRef, zone_len: NonZeroUsize, aggregate_fns: Arc<[AggregateFnRef]>, ) -> VortexResult<Self>

Create a zoned layout from a data child, a zone-map child, a zone length, and the aggregate functions stored in the zone map.

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pub fn zone_len(&self) -> usize

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pub fn present_aggregates(&self) -> Arc<[String]> ⓘ

Returns display names for the zone-map aggregates stored by this layout.

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pub fn nzones(&self) -> usize

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impl<V: VTable> Layout<V>

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pub fn from_parts(parts: LayoutParts<V>) -> Self

Construct a layout from explicit parts.

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pub fn vtable(&self) -> &V

Returns the vtable.

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pub fn data(&self) -> &V::LayoutData

Returns layout-specific data.

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pub fn dtype(&self) -> &DType

Returns the logical dtype.

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pub fn row_count(&self) -> u64

Returns the number of rows.

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pub fn segment_ids(&self) -> &[SegmentId]

Returns directly referenced segment IDs.

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pub fn children(&self) -> &Arc<dyn LayoutChildren> ⓘ

Returns the child adapter.

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pub fn nchildren(&self) -> usize

Returns the number of serialized (present) children.

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pub fn nslots(&self) -> usize

Returns the number of logical child slots, including any that are absent.

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pub fn slot_to_child(&self, slot: usize) -> Option<usize>

Maps a logical slot to the index of its serialized child, or None if absent.

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pub fn slot(&self, slot: usize) -> VortexResult<Option<LayoutRef>>

Materialize the child in logical slot, or None if the slot is absent.

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pub fn slot_type(&self, slot: usize) -> Option<LayoutChildType>

Returns the relationship of the child in logical slot to this layout, or None if the slot is absent.

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pub fn child_row_count(&self, idx: usize) -> u64

Returns a child’s serialized row count without materializing it.

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pub fn to_layout(&self) -> LayoutRef

Erase this typed layout into a shared layout reference.

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pub fn into_layout(self) -> LayoutRef

Erase this typed layout into a shared layout reference.

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pub fn new_reader( &self, name: Arc<str>, segment_source: Arc<dyn SegmentSource>, session: &VortexSession, ctx: &LayoutReaderContext, ) -> VortexResult<LayoutReaderRef>

Construct a reader for this layout.

Trait Implementations§

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impl<V: VTable> Clone for Layout<V>

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fn clone(&self) -> Self

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<V: VTable> Debug for Layout<V>

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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<V: VTable> Deref for Layout<V>

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type Target = <V as VTable>::LayoutData

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

Dereferences the value.
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impl<V: VTable> DynLayout for Layout<V>

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fn as_any(&self) -> &dyn Any

Returns this layout as Any for downcasting.
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fn dyn_to_layout(&self) -> LayoutRef

Clone this layout as an erased reference.
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fn dyn_encoding_id(&self) -> LayoutId

Returns the layout ID.
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fn dyn_row_count(&self) -> u64

Returns the row count.
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fn dyn_dtype(&self) -> &DType

Returns the logical dtype.
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fn dyn_nchildren(&self) -> usize

Returns the number of serialized (present) children.
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fn dyn_nslots(&self) -> usize

Returns the number of logical child slots, including any that are absent.
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fn dyn_slot(&self, slot: usize) -> VortexResult<Option<LayoutRef>>

Materializes the child in logical slot, or None if the slot is absent.
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fn dyn_slot_type(&self, slot: usize) -> Option<LayoutChildType>

Returns the relationship of the child in logical slot, or None if the slot is absent.
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fn dyn_metadata(&self) -> Vec<u8> ⓘ

Serializes layout-specific metadata.
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fn dyn_segment_ids(&self) -> Vec<SegmentId>

Returns directly referenced segment IDs.
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fn dyn_new_reader( &self, name: Arc<str>, segment_source: Arc<dyn SegmentSource>, session: &VortexSession, ctx: &LayoutReaderContext, ) -> VortexResult<LayoutReaderRef>

Constructs a reader.
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fn dyn_is_indivisible(&self) -> bool

Returns true if this layout is indivisible: its readers never register natural split boundaries strictly inside their row range (see crate::VTable::is_indivisible).
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impl<V: VTable> From<Layout<V>> for LayoutRef

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fn from(value: Layout<V>) -> Self

Converts to this type from the input type.

Auto Trait Implementations§

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impl<V> !RefUnwindSafe for Layout<V>

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impl<V> !UnwindSafe for Layout<V>

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impl<V> Freeze for Layout<V>
where Arc<LayoutInner<V>>: Freeze,

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impl<V> Send for Layout<V>
where Arc<LayoutInner<V>>: Send,

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impl<V> Sync for Layout<V>
where Arc<LayoutInner<V>>: Sync,

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impl<V> Unpin for Layout<V>
where Arc<LayoutInner<V>>: Unpin,

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impl<V> UnsafeUnpin for Layout<V>
where Arc<LayoutInner<V>>: UnsafeUnpin,

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impl<T, A, P> Access<T> for P
where A: Access<T> + ?Sized, P: Deref<Target = A>,

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type Guard = <A as Access<T>>::Guard

A guard object containing the value and keeping it alive. Read more
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The loading method. Read more
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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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where T: ?Sized,

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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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
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impl<ST, DT> CastableFrom<ST, Uninit, Uninit> for DT
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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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Converts self into T using Into<T>. Read more
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fn expire_after_create( &self, key: &K, value: &V, created_at: Instant, ) -> Option<Duration>

Specifies that the entry should be automatically removed from the cache once the duration has elapsed after the entry’s creation. This method is called for cache write methods such as insert and get_with but only when the key was not present in the cache. Read more
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fn expire_after_read( &self, key: &K, value: &V, read_at: Instant, duration_until_expiry: Option<Duration>, last_modified_at: Instant, ) -> Option<Duration>

Specifies that the entry should be automatically removed from the cache once the duration has elapsed after its last read. This method is called for cache read methods such as get and get_with but only when the key is present in the cache. Read more
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fn expire_after_update( &self, key: &K, value: &V, updated_at: Instant, duration_until_expiry: Option<Duration>, ) -> Option<Duration>

Specifies that the entry should be automatically removed from the cache once the duration has elapsed after the replacement of its value. This method is called for cache write methods such as insert but only when the key is already present in the cache. Read more
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fn pipe_ref_mut<'a, R>(&'a mut self, func: impl FnOnce(&'a mut Self) -> R) -> R
where R: 'a,

Mutably borrows self and passes that borrow into the pipe function. Read more
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fn pipe_borrow<'a, B, R>(&'a self, func: impl FnOnce(&'a B) -> R) -> R
where Self: Borrow<B>, B: 'a + ?Sized, R: 'a,

Borrows self, then passes self.borrow() into the pipe function. Read more
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fn pipe_borrow_mut<'a, B, R>( &'a mut self, func: impl FnOnce(&'a mut B) -> R, ) -> R
where Self: BorrowMut<B>, B: 'a + ?Sized, R: 'a,

Mutably borrows self, then passes self.borrow_mut() into the pipe function. Read more
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fn pipe_as_ref<'a, U, R>(&'a self, func: impl FnOnce(&'a U) -> R) -> R
where Self: AsRef<U>, U: 'a + ?Sized, R: 'a,

Borrows self, then passes self.as_ref() into the pipe function.
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fn pipe_as_mut<'a, U, R>(&'a mut self, func: impl FnOnce(&'a mut U) -> R) -> R
where Self: AsMut<U>, U: 'a + ?Sized, R: 'a,

Mutably borrows self, then passes self.as_mut() into the pipe function.
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fn pipe_deref<'a, T, R>(&'a self, func: impl FnOnce(&'a T) -> R) -> R
where Self: Deref<Target = T>, T: 'a + ?Sized, R: 'a,

Borrows self, then passes self.deref() into the pipe function.
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fn pipe_deref_mut<'a, T, R>( &'a mut self, func: impl FnOnce(&'a mut T) -> R, ) -> R
where Self: DerefMut<Target = T> + Deref, T: 'a + ?Sized, R: 'a,

Mutably borrows self, then passes self.deref_mut() into the pipe function.
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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> Read<Exclusive, BecauseExclusive> for T
where T: ?Sized,

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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, S> SimdFrom<T, S> for T
where S: Simd,

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fn simd_from(_simd: S, value: T) -> T

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impl<F, T, S> SimdInto<T, S> for F
where T: SimdFrom<F, S>, S: Simd,

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fn simd_into(self, simd: S) -> T

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impl<T> Tap for T

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fn tap(self, func: impl FnOnce(&Self)) -> Self

Immutable access to a value. Read more
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fn tap_mut(self, func: impl FnOnce(&mut Self)) -> Self

Mutable access to a value. Read more
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fn tap_borrow<B>(self, func: impl FnOnce(&B)) -> Self
where Self: Borrow<B>, B: ?Sized,

Immutable access to the Borrow<B> of a value. Read more
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fn tap_borrow_mut<B>(self, func: impl FnOnce(&mut B)) -> Self
where Self: BorrowMut<B>, B: ?Sized,

Mutable access to the BorrowMut<B> of a value. Read more
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fn tap_ref<R>(self, func: impl FnOnce(&R)) -> Self
where Self: AsRef<R>, R: ?Sized,

Immutable access to the AsRef<R> view of a value. Read more
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fn tap_ref_mut<R>(self, func: impl FnOnce(&mut R)) -> Self
where Self: AsMut<R>, R: ?Sized,

Mutable access to the AsMut<R> view of a value. Read more
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fn tap_deref<T>(self, func: impl FnOnce(&T)) -> Self
where Self: Deref<Target = T>, T: ?Sized,

Immutable access to the Deref::Target of a value. Read more
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fn tap_deref_mut<T>(self, func: impl FnOnce(&mut T)) -> Self
where Self: DerefMut<Target = T> + Deref, T: ?Sized,

Mutable access to the Deref::Target of a value. Read more
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fn tap_dbg(self, func: impl FnOnce(&Self)) -> Self

Calls .tap() only in debug builds, and is erased in release builds.
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fn tap_mut_dbg(self, func: impl FnOnce(&mut Self)) -> Self

Calls .tap_mut() only in debug builds, and is erased in release builds.
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fn tap_borrow_dbg<B>(self, func: impl FnOnce(&B)) -> Self
where Self: Borrow<B>, B: ?Sized,

Calls .tap_borrow() only in debug builds, and is erased in release builds.
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fn tap_borrow_mut_dbg<B>(self, func: impl FnOnce(&mut B)) -> Self
where Self: BorrowMut<B>, B: ?Sized,

Calls .tap_borrow_mut() only in debug builds, and is erased in release builds.
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fn tap_ref_dbg<R>(self, func: impl FnOnce(&R)) -> Self
where Self: AsRef<R>, R: ?Sized,

Calls .tap_ref() only in debug builds, and is erased in release builds.
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fn tap_ref_mut_dbg<R>(self, func: impl FnOnce(&mut R)) -> Self
where Self: AsMut<R>, R: ?Sized,

Calls .tap_ref_mut() only in debug builds, and is erased in release builds.
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fn tap_deref_dbg<T>(self, func: impl FnOnce(&T)) -> Self
where Self: Deref<Target = T>, T: ?Sized,

Calls .tap_deref() only in debug builds, and is erased in release builds.
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fn tap_deref_mut_dbg<T>(self, func: impl FnOnce(&mut T)) -> Self
where Self: DerefMut<Target = T> + Deref, T: ?Sized,

Calls .tap_deref_mut() only in debug builds, and is erased in release builds.
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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> TryConv for T

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fn try_conv<T>(self) -> Result<T, Self::Error>
where Self: TryInto<T>,

Attempts to convert self into T using TryInto<T>. 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, !>

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

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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