PHP 8.3: Deep-cloning of readonly properties + more readonly (part 2)

src/Algo/Methods/Borda/BordaCount.php

@@ -23,7 +23,7 @@ class BordaCount extends Method implements MethodInterface
 
     public static int $optionStarting = 1;
 
-    protected ?array $Stats = null;
+    protected readonly array $Stats;
 
     protected function getStats(): array
     {

src/Algo/Methods/Dodgson/DodgsonQuick.php

@@ -21,7 +21,7 @@ class DodgsonQuick extends Method implements MethodInterface
     // Method Name
     public const array METHOD_NAME = ['Dodgson Quick', 'DodgsonQuick', 'Dodgson Quick Winner'];
 
-    protected ?array $Stats = null;
+    protected readonly array $Stats;
 
     protected function getStats(): array
     {

src/Algo/Methods/InstantRunoff/InstantRunoff.php

@@ -21,7 +21,7 @@ class InstantRunoff extends Method implements MethodInterface
     // Method Name
     public const array METHOD_NAME = ['Instant-runoff', 'InstantRunoff', 'IRV', 'preferential voting', 'ranked-choice voting', 'alternative vote', 'AlternativeVote', 'transferable vote', 'Vote alternatif'];
 
-    protected ?array $Stats = null;
+    protected readonly array $Stats;
 
     public readonly float $majority;
 
@@ -57,6 +57,7 @@ protected function compute(): void
 
         $candidateDone = [];
         $result = [];
+        $stats = [];
         $CandidatesWinnerCount = 0;
         $CandidatesLoserCount = 0;
 
@@ -67,7 +68,7 @@ protected function compute(): void
             $maxScore = max($score);
             $minScore = min($score);
 
-            $this->Stats[++$iteration] = $score;
+            $stats[++$iteration] = $score;
 
             if ($maxScore > $this->majority) {
                 foreach ($score as $candidateKey => $candidateScore) {
@@ -101,6 +102,7 @@ protected function compute(): void
             }
         }
 
+        $this->Stats = $stats;
         $this->Result = $this->createResult($result);
     }
 

src/Algo/Methods/Majority/Majority_Core.php

@@ -22,7 +22,7 @@ abstract class Majority_Core extends Method implements MethodInterface
     protected int $numberOfTargetedCandidatesAfterEachRound;
 
     protected array $admittedCandidates = [];
-    protected ?array $Stats = null;
+    protected readonly array $Stats;
 
     protected function getStats(): array
     {

src/Algo/Methods/RankedPairs/RankedPairs_Core.php

@@ -27,7 +27,7 @@ abstract class RankedPairs_Core extends Method implements MethodInterface
     // Ranked Pairs
     protected readonly array $PairwiseSort;
     protected array $Arcs = [];
-    protected ?array $Stats = null;
+    protected array $Stats = [];
     protected bool $StatsDone = false;
 
 

src/Algo/Methods/STV/CPO_STV.php

@@ -53,8 +53,6 @@ class CPO_STV extends SingleTransferableVote
     public static array $optionCondorcetCompletionMethod = self::DEFAULT_METHODS_CHAINING;
     public static array $optionTieBreakerMethods = self::DEFAULT_METHODS_CHAINING;
 
-    protected ?array $Stats = null;
-
     protected SplFixedArray $outcomes;
     protected readonly array $initialScoreTable;
     protected array $candidatesElectedFromFirstRound = [];

src/Algo/Methods/STV/SingleTransferableVote.php

@@ -27,7 +27,7 @@ class SingleTransferableVote extends Method implements MethodInterface
 
     public static StvQuotas $optionQuota = StvQuotas::DROOP;
 
-    protected ?array $Stats = null;
+    protected readonly array $Stats;
 
     protected float $votesNeededToWin;
 
@@ -40,6 +40,7 @@ protected function compute(): void
         Vote::initCache(); // Performances
 
         $result = [];
+        $stats = [];
         $rank = 0;
 
         $this->votesNeededToWin = round(self::$optionQuota->getQuota($election->sumValidVotesWeightWithConstraints(), $election->getNumberOfSeats()), self::DECIMAL_PRECISION, \PHP_ROUND_HALF_DOWN);
@@ -79,7 +80,7 @@ protected function compute(): void
                 $end = true;
             }
 
-            $this->Stats[++$round] = $scoreTable;
+            $stats[++$round] = $scoreTable;
         }
 
         while ($rank < $election->getNumberOfSeats() && !empty($candidateEliminated)) {
@@ -88,6 +89,7 @@ protected function compute(): void
             unset($candidateEliminated[$rescueCandidateKey]);
         }
 
+        $this->Stats = $stats;
         $this->Result = $this->createResult($result);
 
         Vote::clearCache(); // Performances

src/DataManager/DataHandlerDrivers/PdoDriver/PdoHandlerDriver.php

@@ -26,7 +26,7 @@ class PdoHandlerDriver implements DataHandlerDriverInterface
     #[PublicAPI]
     public const array SEGMENT = [499, 50, 4, 1]; // Must be ordered desc.
 
-    protected \PDO $handler;
+    protected readonly \PDO $handler;
     protected bool $transaction = false;
     protected bool $queryError = false;