Enum AttributeValue 

pub enum AttributeValue {
    Numeric(f64),
    Boolean(bool),
    String(String),
}

A single attribute value attached to a graph, vertex, or edge.

use rust_igraph::AttributeValue;

let v = AttributeValue::Numeric(3.14);
assert!(v.as_f64().is_some());
assert!(v.as_str().is_none());

Variants

Numeric(f64)

Floating-point number (mirrors IGRAPH_ATTRIBUTE_NUMERIC).

Boolean(bool)

Boolean (mirrors IGRAPH_ATTRIBUTE_BOOLEAN).

String(String)

UTF-8 string (mirrors IGRAPH_ATTRIBUTE_STRING).

Implementations

impl AttributeValue

pub fn as_f64(&self) -> Option<f64>

Returns the numeric value if this is Numeric, otherwise None.

pub fn as_bool(&self) -> Option<bool>

Returns the boolean value if this is Boolean, otherwise None.

pub fn as_str(&self) -> Option<&str>

Returns a string slice if this is String, otherwise None.

Trait Implementations

impl Clone for AttributeValue

fn clone(&self) -> AttributeValue

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for AttributeValue

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

Formats the value using the given formatter.

impl Display for AttributeValue

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

Formats the value using the given formatter.

impl From<&str> for AttributeValue

fn from(v: &str) -> Self

Converts to this type from the input type.

impl From<String> for AttributeValue

fn from(v: String) -> Self

Converts to this type from the input type.

impl From<bool> for AttributeValue

fn from(v: bool) -> Self

Converts to this type from the input type.

impl From<f64> for AttributeValue

fn from(v: f64) -> Self

Converts to this type from the input type.

impl PartialEq for AttributeValue

fn eq(&self, other: &AttributeValue) -> 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 StructuralPartialEq for AttributeValue