From 63745ee91f7af6970fb62604e5069379251e7cf7 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Stefan=20M=C3=BCller?= <stefan.mueller@aksdb.de>
Date: Tue, 3 Jun 2025 19:23:04 +0200
Subject: [PATCH] Add insertion operator for Grid class

---
 include/aoc/common/Grid.hpp | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)

diff --git a/include/aoc/common/Grid.hpp b/include/aoc/common/Grid.hpp
index 02c165b..0b803b7 100644
--- a/include/aoc/common/Grid.hpp
+++ b/include/aoc/common/Grid.hpp
@@ -15,6 +15,7 @@
 
 #pragma once
 
+#include <iostream>
 #include <memory>
 
 #include <aoc/common/Point2.hpp>
@@ -65,4 +66,20 @@ class Grid
     size_t nRows_;
     size_t nColumns_;
     std::unique_ptr<T[]> data_;
+    friend std::ostream& operator<< <>(std::ostream& os, const Grid<T>& rhs);
 };
+
+template <typename T>
+std::ostream& operator<<(std::ostream& os, const Grid<T>& rhs)
+{
+    size_t i{ 0 };
+    for (size_t j = 0; j < rhs.getNRows(); j++)
+    {
+        for (; i < j * rhs.getNColumns(); i++)
+        {
+            os << rhs.data_[i] << ' ';
+        }
+        os << std::endl;
+    }
+    return os;
+}