Struct petgraph::matrix_graph::NotZero

pub struct NotZero<T>(_);

NotZero is used to optimize the memory usage of edge weights E in a MatrixGraph, replacing the default Option<E> sentinel.

Pre-requisite: edge weight should implement Zero.

Note that if you’re already using the standard non-zero types (such as NonZeroU32), you don’t have to use this wrapper and can leave the default Null type argument.

Trait Implementations

impl<T: Zero> Default for NotZero<T>

fn default() -> Self

Returns the “default value” for a type.

impl<T: Zero> Into<Option<T>> for NotZero<T>

fn into(self) -> Option<T>

Performs the conversion.

impl<T: Zero> Nullable for NotZero<T>

type Wrapped = T

fn new(value: T) -> Self

fn is_null(&self) -> bool

fn as_ref(&self) -> Option<&Self::Wrapped>

fn as_mut(&mut self) -> Option<&mut Self::Wrapped>