Improve memory utilization for count() (#101)

sanmai · Jan 30, 2022 · 3a88f26 · 3a88f26
1 parent 393a496
commit 3a88f26
Showing 1 changed file with 5 additions and 4 deletions.
diff --git a/src/Standard.php b/src/Standard.php
@@ -374,12 +374,13 @@ public function count(): int
             return 0;
         }
 
-        if (!is_array($this->pipeline)) {
-            // Count values for an iterator.
-            $this->pipeline = iterator_to_array($this, false);
+        $result = 0;
+
+        foreach ($this->pipeline as $value) {
+            ++$result;
         }
 
-        return count($this->pipeline);
+        return $result;
     }
 
     private static function makeNonRewindable(iterable $input): Generator