Trait ElementIncidenceCount 

pub trait ElementIncidenceCount: IncidenceBase {
    // Required method
    fn element_incidence_count(&self, element: Self::ElementId) -> usize;
}

Exact element-incidence count capability.

This pairs with ElementIncidences for backends that can report an element’s incidence count without traversal. The trait does not require traversal support by itself.

Performance

Expected O(1) unless the implementation documents otherwise.

Required Methods

fn element_incidence_count(&self, element: Self::ElementId) -> usize

Returns the number of incidences attached to element.

Performance

Expected O(1) unless the implementation documents otherwise.

Dyn Compatibility

This trait is dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety".

Implementors