Struct Attributes

pub struct Attributes { /* private fields */ }

A set of attributes associated with a graph node or edge

Implementations

impl Attributes

pub fn new() -> Attributes

Creates a new, empty set of attributes.

pub fn add<V: Into<Value>>( &mut self, name: Identifier, value: V, ) -> Result<(), Value>

Adds an attribute to this attribute set. If there was already an attribute with the same name, replaces its value and returns Err.

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

where Q: ?Sized + Eq + Hash, Identifier: Borrow<Q>,

Returns the value of a particular attribute, if it exists.

pub fn iter(&self) -> impl Iterator<Item = (&Identifier, &Value)>

Trait Implementations

impl Clone for Attributes

fn clone(&self) -> Attributes

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Attributes

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

Formats the value using the given formatter.

impl Display for Attributes

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

Formats the value using the given formatter.

impl Serialize for Attributes

fn serialize<S: Serializer>(&self, serializer: S) -> Result<S::Ok, S::Error>

Serialize this value into the given Serde serializer.