Add benchmark comment.

linebender · May 21, 2020 · fb35901 · fb35901
1 parent d327815
commit fb35901
Showing 1 changed file with 5 additions and 0 deletions.
diff --git a/druid/src/util.rs b/druid/src/util.rs
@@ -33,6 +33,11 @@ where
     K: Eq + Hash + Copy,
     V: Copy,
 {
+    // Benchmarking this vs just extend+drain with a 10k entry map.
+    //
+    // running 2 tests
+    // test bench_extend       ... bench:       1,971 ns/iter (+/- 566)
+    // test bench_extend_drain ... bench:           0 ns/iter (+/- 0)
     fn extend_drain(&mut self, source: &mut Self) {
         if !source.is_empty() {
             if self.is_empty() {