From a3596b582d300dad07fc1c536efa486a9cbd8b79 Mon Sep 17 00:00:00 2001
From: Dan Goodliffe <dan@randomdan.homeip.net>
Date: Mon, 2 Jan 2023 15:04:50 +0000
Subject: Add a concept for sequential collections suitable for passing to
 OpenGL

---
 lib/collections.hpp | 10 ++++++++++
 1 file changed, 10 insertions(+)

(limited to 'lib/collections.hpp')

diff --git a/lib/collections.hpp b/lib/collections.hpp
index b87cda3..5d39e79 100644
--- a/lib/collections.hpp
+++ b/lib/collections.hpp
@@ -3,6 +3,16 @@
 #include <array>
 #include <span>
 
+template<typename T, typename E>
+concept SequentialCollection = requires(T c) {
+								   {
+									   c.size()
+									   } -> std::integral;
+								   {
+									   c.data()
+									   } -> std::same_as<const E *>;
+							   };
+
 template<typename T, std::size_t first, std::size_t second>
 constexpr std::array<T, first + second>
 operator+(const std::array<T, first> & a, const std::array<T, second> & b)
-- 
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