From 0cd0b4da5a8d9aee778e8394741d4048e20e5642 Mon Sep 17 00:00:00 2001
From: Jan Travnicek <jan.travnicek@.fit.cvut.cz>
Date: Wed, 29 May 2019 14:49:53 +0200
Subject: [PATCH] fix use of c-array in has_clone trait
---
alib2std/src/extensions/type_traits.hpp | 12 +++++-------
1 file changed, 5 insertions(+), 7 deletions(-)
diff --git a/alib2std/src/extensions/type_traits.hpp b/alib2std/src/extensions/type_traits.hpp
index a9b177a9d0..21e496c8a8 100644
--- a/alib2std/src/extensions/type_traits.hpp
+++ b/alib2std/src/extensions/type_traits.hpp
@@ -39,20 +39,18 @@ namespace ext {
template<class T>
struct has_clone {
private:
- typedef char (&Yes)[1];
- typedef char (&No)[2];
-
- template<class U>
- static Yes test(U * data, typename std::enable_if< std::is_pointer<decltype(data->clone())>::value>::type * = nullptr);
- static No test(...);
+ template < class U >
+ static std::true_type test ( U * data, typename std::enable_if < std::is_pointer_v < decltype ( data->clone ( ) ) > >::type * = nullptr );
+ static std::false_type test ( ... );
public:
/**
* \brief
* True if the type decayed type T has clone method.
*/
- static const bool value = sizeof(Yes) == sizeof(has_clone::test((typename std::decay<T>::type*)nullptr));
+ static const bool value = decltype ( has_clone::test ( std::declval < std::decay_t < T > * > ( ) ) )::value;
};
+
/**
* \brief
* Positive supports test implementation. The test is designed to detect call availability on callable F with parameters Ts ...
--
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