From defa7e1b9e16c6276e17a39b61d019c1a116472b Mon Sep 17 00:00:00 2001
From: Steven Le Rouzic <steven.lerouzic@gmail.com>
Date: Fri, 22 Nov 2024 18:15:40 +0100
Subject: Use niche in option

---
 asl/meta.hpp | 3 +++
 1 file changed, 3 insertions(+)

(limited to 'asl/meta.hpp')

diff --git a/asl/meta.hpp b/asl/meta.hpp
index 72b36fd..ab25a88 100644
--- a/asl/meta.hpp
+++ b/asl/meta.hpp
@@ -169,4 +169,7 @@ concept has_niche = constructible_from<T, niche> &&
         { value == n } -> same_as<bool>;
     };
 
+template<typename T>
+concept is_niche = same_as<un_cvref_t<T>, niche>;
+
 } // namespace asl
-- 
cgit