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::value is true if an exception ptr can be constructed from a T e.g. if there exists an ADL discovered free function make_exception_ptr(T). ::type is the type that would result if ::value is true, else void.

Overridable: By template specialisation into the trait namespace.

Default: True if T is an exception ptr, else to metaprogramming which performs the ADL discovery of make_exception_ptr(T). Note that the STL defines an ADL discovered free function std::make_exception_ptr(T) . Thus this trait will pick up that free function.


Header: <boost/outcome/trait.hpp>

Variable alias: is_exception_ptr_available_v<T>

Last revised: October 10, 2019 at 18:14:56 +0100

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