Struct Metadata 

pub struct Metadata { /* private fields */ }

Metadata fields for one vector.

Implementations

impl Metadata

pub const fn new() -> Self

pub fn insert( &mut self, field: impl Into<String>, value: MetadataValue, ) -> Option<MetadataValue>

pub fn get(&self, field: &str) -> Option<&MetadataValue>

pub fn remove(&mut self, field: &str) -> Option<MetadataValue>

pub fn len(&self) -> usize

pub fn is_empty(&self) -> bool

pub fn iter(&self) -> impl ExactSizeIterator<Item = (&str, &MetadataValue)>

Trait Implementations

impl Clone for Metadata

fn clone(&self) -> Metadata

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Metadata

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

Formats the value using the given formatter.

impl Default for Metadata

fn default() -> Metadata

Returns the “default value” for a type.

impl Eq for Metadata

impl PartialEq for Metadata

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for Metadata