From 4a30d7f34efd30f21b560dbd3442a86482615b07 Mon Sep 17 00:00:00 2001
From: Dan Goodliffe <dan@randomdan.homeip.net>
Date: Sun, 27 Oct 2024 15:47:35 +0000
Subject: Add stream support for tuples

---
 lib/stream_support.h | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)

diff --git a/lib/stream_support.h b/lib/stream_support.h
index 57d82a1..d71356c 100644
--- a/lib/stream_support.h
+++ b/lib/stream_support.h
@@ -6,6 +6,7 @@
 #include <maths.h>
 #include <span>
 #include <sstream>
+#include <tuple>
 #include <type_traits>
 
 template<typename S>
@@ -49,6 +50,22 @@ namespace std {
 		return (s << '(' << v.first << ", " << v.second << ')');
 	}
 
+	namespace {
+		template<typename... T, size_t... Idx>
+		std::ostream &
+		printTuple(std::ostream & s, const std::tuple<T...> & v, std::integer_sequence<size_t, Idx...>)
+		{
+			return ((s << (Idx ? ", " : "") << std::get<Idx>(v)), ...);
+		}
+	}
+
+	template<typename... T>
+	std::ostream &
+	operator<<(std::ostream & s, const std::tuple<T...> & v)
+	{
+		return printTuple(s << '{', v, std::make_index_sequence<sizeof...(T)>()) << '}';
+	}
+
 	inline std::ostream &
 	operator<<(std::ostream & s, const Arc & arc)
 	{
-- 
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