From 17638ed0ebf889a09101c3bfc6714fe4a6efc212 Mon Sep 17 00:00:00 2001
From: zhuwenq <zhuwenqa@outlook.com>
Date: Thu, 20 Jun 2024 20:03:41 +0800
Subject: [PATCH] feat: add inplace `make_unexpected`

---
 include/nonstd/expected.hpp | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/include/nonstd/expected.hpp b/include/nonstd/expected.hpp
index 305f3ab..33b58f9 100644
--- a/include/nonstd/expected.hpp
+++ b/include/nonstd/expected.hpp
@@ -1567,6 +1567,18 @@ make_unexpected( E && value ) -> unexpected_type< typename std::decay<E>::type >
     return unexpected_type< typename std::decay<E>::type >( std::forward<E>(value) );
 }
 
+template<
+    typename E, typename... Args,
+    typename = std::enable_if<
+        std::is_constructible<E, Args...>::value
+    >
+>
+nsel_constexpr14 auto
+make_unexpected(in_place_t inplace, Args... args) -> unexpected_type< typename std::decay<E> >
+{
+    return unexpected_type< typename std::decay<E>::type >(inplace, std::forward<Args>(args)...);
+}
+
 #if nsel_P0323R <= 3
 
 /*nsel_constexpr14*/ auto inline