< cpp‎ | thread
Defined in header <future>
const std::error_category& future_category() noexcept;
(since C++11)

Obtains a reference to the static error category object for the errors related to futures and promises. The object is required to override the virtual function error_category::name() to return a pointer to the string "future". It is used to identify error codes provided in the exceptions of type std::future_error.



Return value

A reference to the static object of unspecified runtime type, derived from std::error_category.


See also

identifies the future error codes
reports an error related to futures or promises
base class for error categories