From 25ec91e725bdf495722034a0331c77d45ab9b266 Mon Sep 17 00:00:00 2001
From: Leah Neukirchen <leah@vuxu.org>
Date: Tue, 5 Dec 2017 18:19:55 +0100
Subject: day03: use a proper C++17 sentinel value for infinity

---
 day03.cc | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/day03.cc b/day03.cc
index efaffc0..fef7c92 100644
--- a/day03.cc
+++ b/day03.cc
@@ -7,6 +7,7 @@
 using namespace std;
 
 class SpiralIterator : public std::iterator<std::input_iterator_tag, int> {
+	struct SpiralInfinity { };
 public:
 	pair<int, int> p;
 	int i, j, d;
@@ -15,8 +16,8 @@ public:
 	{ }
 
 	auto begin() { return *this; }
-	auto end() { return SpiralIterator{}; }
-	bool operator!=(SpiralIterator &) const { return true; }   // infinite
+	auto end() { return SpiralInfinity{}; }
+	bool operator!=(SpiralInfinity) const { return true; }   // infinite
 
 	auto operator*() { return p; }
 	auto operator++() {
-- 
cgit 1.4.1