From ce77b2354c8b2ccc557d418ccb2c97f2748426cd Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Stefan=20M=C3=BCller?= <stefan.mueller@aksdb.de>
Date: Mon, 17 Feb 2025 15:07:20 +0100
Subject: [PATCH] Change Point2 to use STL arrays for predefined directions

---
 include/aoc/Point2.hpp | 6 ++++--
 src/Point2.cpp         | 6 +++---
 2 files changed, 7 insertions(+), 5 deletions(-)

diff --git a/include/aoc/Point2.hpp b/include/aoc/Point2.hpp
index 8e3caf3..857471f 100644
--- a/include/aoc/Point2.hpp
+++ b/include/aoc/Point2.hpp
@@ -15,6 +15,8 @@
 
 #pragma once
 
+#include <array>
+
 class Point2
 {
 public:
@@ -24,11 +26,11 @@ class Point2
     /// The eight cardinal and diagonal directions starting down, rotating in
     /// positive direction.
     /// </summary>
-    static const Point2 directions[8];
+    static const std::array<Point2, 8> directions;
     /// <summary>
     /// The four cardinal directions starting down, rotating in positive direction.
     /// </summary>
-    static const Point2 cardinalDirections[4];
+    static const std::array<Point2, 4> cardinalDirections;
     int x, y;
     Point2();
     Point2(const int x, const int y);
diff --git a/src/Point2.cpp b/src/Point2.cpp
index 1103915..6437d53 100644
--- a/src/Point2.cpp
+++ b/src/Point2.cpp
@@ -23,9 +23,9 @@ const Point2 Point2::upLeft{ -1, -1 };
 const Point2 Point2::upRight{ 1, -1 };
 const Point2 Point2::downLeft{ -1, 1 };
 const Point2 Point2::downRight{ 1, 1 };
-const Point2 Point2::directions[] = { Point2::down, Point2::downRight, Point2::right, Point2::upRight, Point2::up,
-    Point2::upLeft, Point2::left, Point2::downLeft };
-const Point2 Point2::cardinalDirections[] = { Point2::down, Point2::right, Point2::up, Point2::left };
+const std::array<Point2, 8> Point2::directions = { Point2::down, Point2::downRight, Point2::right, Point2::upRight,
+    Point2::up, Point2::upLeft, Point2::left, Point2::downLeft };
+const std::array<Point2, 4> Point2::cardinalDirections = { Point2::down, Point2::right, Point2::up, Point2::left };
 
 Point2::Point2()
     : Point2{ 0, 0 }