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changeset 405:319a27b03734

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merging_iter: Simplify condition in valid(). This gets us another few percent (1-3%) in iterator speed.
author Lewin Bormann <lbo@spheniscida.de>
date Wed, 11 Oct 2017 21:21:57 +0200
parents e58fe2511a3f
children c2d1c97102ca
files src/merging_iter.rs
diffstat 1 files changed, 1 insertions(+), 3 deletions(-) [+]
line wrap: on
line diff
--- a/src/merging_iter.rs	Wed Oct 11 21:10:53 2017 +0200
+++ b/src/merging_iter.rs	Wed Oct 11 21:21:57 2017 +0200
@@ -153,9 +153,7 @@
     }
     fn valid(&self) -> bool {
         if let Some(ix) = self.current {
-            // TODO: second clause is unnecessary, because first asserts that at least one iterator
-            // is valid.
-            self.iters[ix].valid() && self.iters.iter().any(|it| it.valid())
+            self.iters[ix].valid()
         } else {
             false
         }