assign keys to variable for better performance

improves performance by ~1-1.5%
vimeo · Jun 28, 2022 · 57239a7 · 57239a7
1 parent 4048bb9
commit 57239a7
Showing 1 changed file with 2 additions and 1 deletion.
diff --git a/src/Psalm/Internal/Algebra.php b/src/Psalm/Internal/Algebra.php
@@ -136,14 +136,15 @@ public static function simplifyCNF(array $clauses): array
             if (!$clause_a->reconcilable || $clause_a->wedge) {
                 continue;
             }
+            $clause_a_keys = array_keys($clause_a->possibilities);
 
             if (count($clause_a->possibilities) !== 1 || count(array_values($clause_a->possibilities)[0]) !== 1) {
                 foreach ($cloned_clauses as $clause_b) {
                     if ($clause_a === $clause_b || !$clause_b->reconcilable || $clause_b->wedge) {
                         continue;
                     }
 
-                    if (array_keys($clause_a->possibilities) === array_keys($clause_b->possibilities)) {
+                    if ($clause_a_keys === array_keys($clause_b->possibilities)) {
                         $opposing_keys = [];
 
                         foreach ($clause_a->possibilities as $key => $a_possibilities) {