fix breakage due to compiling in C++17
Cette révision appartient à :
@@ -84,12 +84,21 @@ struct is_callable_impl<F(Ts...), 4u, void_t_<decltype(std::declval<F>()(std::de
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// Not callable.
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template <FunctionalProcedure F>
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struct is_callable_impl<F, 5u> : std::false_type {};
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#else
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#elif (__cplusplus < 201703L)
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template <typename, typename = void>
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struct is_callable_impl : std::false_type {};
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template <FunctionalProcedure F, typename... Ts>
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struct is_callable_impl<F(Ts...), void_t_<std::result_of_t<F(Ts...)> > > : std::true_type {};
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#else
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// C++17
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template <typename, typename = void>
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struct is_callable_impl : std::false_type {};
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template <FunctionalProcedure F, typename... Ts>
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struct is_callable_impl<F(Ts...), void_t_<std::invoke_result<F(Ts...)> > > : std::true_type {};
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#endif
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template <typename Call>
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struct is_callable : is_callable_impl<Call> {};
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