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> From<NotZero<T>> for Option<T>

fn from(not_zero: NotZero<T>) -> Self

Converts to this type from the input type.

impl<T: Zero> Nullable for NotZero<T>