Struct AttributeCollection 

pub struct AttributeCollection { /* private fields */ }

A collection of attributes.

Linear scan on a flat Vec<Attribute>. O(n) lookup is optimal for the typical 0–5 attributes per element.

Implementations

impl AttributeCollection

pub fn new() -> Self

Create an empty collection.

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

Get an attribute value by name.

pub fn set(&mut self, name: &str, value: impl Into<String>)

Set an attribute. If it exists, update its value. Otherwise, add it.

pub fn remove(&mut self, name: &str) -> Option<String>

Remove an attribute by name. Returns the old value if it existed.

pub fn has(&self, name: &str) -> bool

Check if an attribute exists.

pub fn len(&self) -> usize

Number of attributes.

pub fn is_empty(&self) -> bool

Is the collection empty?

pub fn iter(&self) -> impl Iterator<Item = &Attribute>

Iterate over all attributes.

Trait Implementations

impl Clone for AttributeCollection

fn clone(&self) -> AttributeCollection

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for AttributeCollection

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

Formats the value using the given formatter.

impl Default for AttributeCollection

fn default() -> AttributeCollection

Returns the “default value” for a type.