core: replace vec.truncate(0) with vec.clear()

[nihav.git] / nihav-core / src / scale / palette / elbg.rs

diff --git a/nihav-core/src/scale/palette/elbg.rs b/nihav-core/src/scale/palette/elbg.rs
index 8b67a513fdc84797b33aa103d6a57f9d7bde4a04..9a7d96701e764e38729778da71daa7af6c6c61a2 100644 (file)
--- a/nihav-core/src/scale/palette/elbg.rs
+++ b/nihav-core/src/scale/palette/elbg.rs
@@ -195,7 +195,7 @@ impl ELBG {
         clu1.calc_dist();
         clu0.dist + clu1.dist
     }
-    #[allow(clippy::cyclomatic_complexity)]
+    #[allow(clippy::cognitive_complexity)]
     pub fn quantise(&mut self, src: &[Pixel], dst: &mut [[u8; 3]; 256]) {
         if src.len() < 3 {
             return;
@@ -236,7 +236,7 @@ impl ELBG {
                 self.clusters[i].reset();
             }
             // put pixels into the nearest clusters
-            indices.truncate(0);
+            indices.clear();
             for entry in entries.iter() {
                 let mut bestidx = 0;
                 let mut bestdist = std::u32::MAX;
@@ -267,8 +267,8 @@ impl ELBG {
             }
 
             let dmean = dist / 256;
-            low_u.truncate(0);
-            high_u.truncate(0);
+            low_u.clear();
+            high_u.clear();
             let mut used = [false; 256];
             for (i, cluster) in self.clusters.iter().enumerate() {
                 if cluster.dist < dmean {