From 28e1b2d2bfd8c3228b42a151aa746306bd8024ab Mon Sep 17 00:00:00 2001
From: Dan Goodliffe <dan.goodliffe@octal.co.uk>
Date: Fri, 6 Mar 2026 14:01:52 +0000
Subject: Define SequentialCollection in terms of contiguous_range

---
 lib/collections.h | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

(limited to 'lib')

diff --git a/lib/collections.h b/lib/collections.h
index e182af5..3c80125 100644
--- a/lib/collections.h
+++ b/lib/collections.h
@@ -10,10 +10,8 @@
 #include <vector>
 
 template<typename T, typename E>
-concept SequentialCollection = requires(T c) {
-	{ c.size() } -> std::integral;
-	{ c.data() } -> std::same_as<const E *>;
-};
+concept SequentialCollection
+		= std::ranges::contiguous_range<T> && std::is_same_v<const E, const typename T::value_type>;
 template<typename T>
 concept IterableCollection = std::is_same_v<decltype(std::declval<T>().begin()), decltype(std::declval<T>().end())>;
 
-- 
cgit v1.3