Struct ArrayMeta 

pub struct ArrayMeta {
    pub name: String,
    pub dtype: DType,
    pub layout: ArrayLayout,
    pub fill_value: Option<FillValue>,
    pub deleted: bool,
    pub attributes: Attributes,
}

Metadata for a single array stored in the file.

Stored in the footer’s array table. Contains the schema, layout information, and a logical deletion flag.

Fields

name: String

Unique name of the array within the file.

dtype: DType

Element data type.

layout: ArrayLayout

Shape, dimension names, and physical chunk layout.

fill_value: Option<FillValue>

Fill value for unwritten or missing elements. None means zero/empty.

deleted: bool

Whether this array has been logically deleted.

Deleted arrays are ignored during reads and removed during compaction.

attributes: Attributes

User-defined key-value attributes.

Each entry is (key_index, value_index) referencing Footer::attr_keys and Footer::attr_values. Entries are sorted by key index for O(log n) lookup. The Attributes variant controls the storage width per index.

Trait Implementations

impl Archive for ArrayMeta

where String: Archive, DType: Archive, ArrayLayout: Archive, Option<FillValue>: Archive, bool: Archive, Attributes: Archive,

const COPY_OPTIMIZATION: CopyOptimization<Self>

An optimization flag that allows the bytes of this type to be copied directly to a writer instead of calling serialize.

type Archived = ArchivedArrayMeta

The archived representation of this type.

type Resolver = ArrayMetaResolver

The resolver for this type. It must contain all the additional information from serializing needed to make the archived type from the normal type.

fn resolve(&self, resolver: Self::Resolver, out: Place<Self::Archived>)

Creates the archived version of this value at the given position and writes it to the given output.

impl Clone for ArrayMeta

fn clone(&self) -> ArrayMeta

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for ArrayMeta

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

Formats the value using the given formatter.

impl<__D: Fallible + ?Sized> Deserialize<ArrayMeta, __D> for Archived<ArrayMeta>

where String: Archive, <String as Archive>::Archived: Deserialize<String, __D>, DType: Archive, <DType as Archive>::Archived: Deserialize<DType, __D>, ArrayLayout: Archive, <ArrayLayout as Archive>::Archived: Deserialize<ArrayLayout, __D>, Option<FillValue>: Archive, <Option<FillValue> as Archive>::Archived: Deserialize<Option<FillValue>, __D>, bool: Archive, <bool as Archive>::Archived: Deserialize<bool, __D>, Attributes: Archive, <Attributes as Archive>::Archived: Deserialize<Attributes, __D>,

fn deserialize( &self, deserializer: &mut __D, ) -> Result<ArrayMeta, <__D as Fallible>::Error>

Deserializes using the given deserializer

impl PartialEq for ArrayMeta

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

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

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

impl<__S: Fallible + ?Sized> Serialize<__S> for ArrayMeta

where String: Serialize<__S>, DType: Serialize<__S>, ArrayLayout: Serialize<__S>, Option<FillValue>: Serialize<__S>, bool: Serialize<__S>, Attributes: Serialize<__S>,

fn serialize( &self, serializer: &mut __S, ) -> Result<<Self as Archive>::Resolver, <__S as Fallible>::Error>

Writes the dependencies for the object and returns a resolver that can create the archived type.

impl StructuralPartialEq for ArrayMeta