From 76842f18bac578636c834ee4a879ec13f97b8fbe Mon Sep 17 00:00:00 2001
From: Danny Robson <danny@nerdcruft.net>
Date: Fri, 26 Nov 2021 15:23:31 +1000
Subject: [PATCH] view: don't assert on redim to zero

---
 view.hpp | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/view.hpp b/view.hpp
index 068f6332..d1f86a7c 100644
--- a/view.hpp
+++ b/view.hpp
@@ -306,7 +306,9 @@ namespace cruft {
         [[nodiscard]] constexpr auto
         redim (size_type count) const
         {
-            assert (count > 0);
+            if constexpr (std::is_signed_v<size_type>)
+                assert (count >= 0);
+
             if (count > size ())
                 throw std::invalid_argument ("redim to higher size not allowed");
             return view { m_begin, m_begin + count };