Merge pull request #92 from simPod/implicit

Fix PHP 8.1 deprecations

Author: rtheunissen

src/PriorityQueue.php

@@ -120,7 +120,7 @@ private function right(int $index): int
      */
     private function parent(int $index): int
     {
-        return ($index - 1) / 2;
+        return (int) (($index - 1) / 2);
     }
 
     /**

src/Queue.php

@@ -178,6 +178,7 @@ public function offsetUnset($offset)
      *
      * @throws Error
      */
+    #[\ReturnTypeWillChange]
     public function offsetExists($offset)
     {
         throw new Error();

src/Set.php

@@ -243,7 +243,7 @@ public function isEmpty(): bool
      */
     public function join(string $glue = null): string
     {
-        return implode($glue, $this->toArray());
+        return implode($glue ?? '', $this->toArray());
     }
 
     /**

src/Traits/Capacity.php

@@ -11,7 +11,7 @@
 trait Capacity
 {
     /**
-     * @var integer internal capacity
+     * @var int internal capacity
      */
     private $capacity = self::MIN_CAPACITY;
 
@@ -95,7 +95,7 @@ protected function shouldIncreaseCapacity(): bool
 
     protected function nextCapacity(): int
     {
-        return $this->capacity() * $this->getGrowthFactor();
+        return (int) ($this->capacity() * $this->getGrowthFactor());
     }
 
     /**
@@ -116,7 +116,7 @@ protected function decreaseCapacity()
     {
         $this->capacity = max(
             self::MIN_CAPACITY,
-            $this->capacity()  * $this->getDecayFactor()
+            (int) ($this->capacity()  * $this->getDecayFactor())
         );
     }
 

src/Traits/GenericSequence.php

@@ -148,7 +148,7 @@ public function insert(int $index, ...$values)
      */
     public function join(string $glue = null): string
     {
-        return implode($glue, $this->array);
+        return implode($glue ?? '', $this->array);
     }
 
     /**