From fb0bd6e79d4dd2b6ba736989a94c0e7bdf307f1b Mon Sep 17 00:00:00 2001
From: Jackson <jharmer95@gmail.com>
Date: Thu, 24 Nov 2022 07:22:17 -0500
Subject: [PATCH] Add deduction guide to tl::unexpected (#109)

---
 include/tl/expected.hpp | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/include/tl/expected.hpp b/include/tl/expected.hpp
index 7dd82b7..9bc01b1 100644
--- a/include/tl/expected.hpp
+++ b/include/tl/expected.hpp
@@ -147,6 +147,11 @@ private:
   E m_val;
 };
 
+#ifdef __cpp_deduction_guides
+template<class E>
+unexpected(E) -> unexpected<E>;
+#endif
+
 template <class E>
 constexpr bool operator==(const unexpected<E> &lhs, const unexpected<E> &rhs) {
   return lhs.value() == rhs.value();