From 2aa48bfcb3506edc98626c857e566c3424b0e206 Mon Sep 17 00:00:00 2001
From: Rubidium <rubidium@openttd.org>
Date: Sat, 17 Jun 2023 11:59:06 +0200
Subject: [PATCH] Add: subspan function to span

---
 src/core/span_type.hpp | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/src/core/span_type.hpp b/src/core/span_type.hpp
index 1cee60288b..beaa0be292 100644
--- a/src/core/span_type.hpp
+++ b/src/core/span_type.hpp
@@ -96,6 +96,12 @@ public:
 
 	constexpr pointer data() const noexcept { return first; }
 
+	constexpr span<element_type> subspan(size_t offset, size_t count)
+	{
+		assert(offset + count <= size());
+		return span(this->data() + offset, count);
+	}
+
 private:
 	pointer first;
 	pointer last;