Add Copy to IncidenceCursor trait

2026-07-17 09:53:05 +02:00
parent 24c08438d6
commit 8c6c98859c
1 changed files with 2 additions and 2 deletions
@@ -5,7 +5,7 @@ use crate::maps::{EdgeMap, VertexMap};
 pub trait GraphTopology {
    type Vertex: Copy + Eq;
    type Edge: Copy + Eq;
-    type IncidenceCursor: IncidenceCursor<Self> + Copy;
+    type IncidenceCursor: IncidenceCursor<Self>;

    fn vertex_count(&self) -> usize;
    fn vertex_capacity(&self) -> usize;
@@ -31,6 +31,6 @@ pub trait GraphTopologyDeletion: GraphTopology {
    fn delete_edge(&mut self, e: Self::Edge);
 }

-pub trait IncidenceCursor<G: GraphTopology + ?Sized> {
+pub trait IncidenceCursor<G: GraphTopology + ?Sized>: Copy {
    fn next(&mut self, graph: &G) -> Option<(G::Vertex, G::Edge)>;
 }