add comment about copy_queue (non-)usage

2023-04-16 16:37:28 -04:00 · 2023-04-16 16:37:28 -04:00 · cf9fd27ca0
parent 04dddcdaa8
commit cf9fd27ca0
1 changed files with 3 additions and 0 deletions
--- a/fish/src/bot/node.rs
+++ b/fish/src/bot/node.rs
@ -121,6 +121,9 @@ impl Node {
                    Node::alloc(
                        arena,
                        copy_matrix(arena, &matrix),
+                        // optimization: copy_queue() not necessary! self.queue is already
+                        // allocated on the arena, and this queue just aliases pointers
+                        // into self.queue.next
                        queue,
                        evaluate(&matrix, queue),
                        Some(Edge {