From cb0c9830c86c11b91eb6946168c4b53dd730f3d4 Mon Sep 17 00:00:00 2001
From: Andrew DalPino <me@andrewdalpino.com>
Date: Sat, 2 Apr 2022 22:15:13 -0500
Subject: [PATCH] Compensate for PHP 8.1 backward compatibility issues

---
 src/Matrix.php | 4 ++--
 src/Vector.php | 4 +++-
 2 files changed, 5 insertions(+), 3 deletions(-)

diff --git a/src/Matrix.php b/src/Matrix.php
index 81dfbe7..5bf612f 100644
--- a/src/Matrix.php
+++ b/src/Matrix.php
@@ -12,7 +12,7 @@
 use Tensor\Exceptions\DimensionalityMismatch;
 use Tensor\Exceptions\RuntimeException;
 use Tensor\Exceptions\NotImplemented;
-use Generator;
+use Traversable;
 
 use function count;
 use function is_float;
@@ -3435,7 +3435,7 @@ public function offsetGet($index) : Vector
      *
      * @return \Generator<int,\Tensor\Vector>
      */
-    public function getIterator() : Generator
+    public function getIterator() : Traversable
     {
         foreach ($this->a as $row) {
             yield Vector::quick($row);
diff --git a/src/Vector.php b/src/Vector.php
index a1a1c07..38d1310 100644
--- a/src/Vector.php
+++ b/src/Vector.php
@@ -6,6 +6,7 @@
 use Tensor\Exceptions\DimensionalityMismatch;
 use Tensor\Exceptions\RuntimeException;
 use ArrayIterator;
+use Traversable;
 
 use function count;
 use function is_float;
@@ -2303,6 +2304,7 @@ public function offsetUnset($index) : void
      * @throws \Tensor\Exceptions\InvalidArgumentException
      * @return float
      */
+    #[\ReturnTypeWillChange]
     public function offsetGet($index)
     {
         if (isset($this->a[$index])) {
@@ -2318,7 +2320,7 @@ public function offsetGet($index)
      *
      * @return \ArrayIterator<int,float>
      */
-    public function getIterator() : ArrayIterator
+    public function getIterator() : Traversable
     {
         return new ArrayIterator($this->a);
     }