From 7aa90954eb997b922577ee2fba5a295834a0f740 Mon Sep 17 00:00:00 2001
From: Hugo Sales <hugo@hsal.es>
Date: Fri, 31 Dec 2021 19:22:55 +0000
Subject: [PATCH] [UTIL][Functional] Update Functional::cartesian_product to
 pass an array of collections first and a separator after

---
 src/Util/Functional.php | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/src/Util/Functional.php b/src/Util/Functional.php
index eb5297663e..508ab9e272 100644
--- a/src/Util/Functional.php
+++ b/src/Util/Functional.php
@@ -32,12 +32,16 @@ declare(strict_types = 1);
 
 namespace App\Util;
 
+use Stringable;
+
 abstract class Functional
 {
     /**
      * TODO replace with \Functional\cartesian_product when it gets merged upstream
+     *
+     * @param array<array<string|Stringable>> $collections
      */
-    public static function cartesianProduct(string|array $separator, ...$collections)
+    public static function cartesianProduct(array $collections, string|array $separator = ''): array
     {
         $aggregation = [];
         $left        = array_shift($collections);