std::future_category

 

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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.

Parameters

(none)

Return value

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

See also

future_errc (C++11)	identifies the future error codes (enum)
future_error (C++11)	reports an error related to futures or promises (class)
error_category (C++11)	base class for error categories (class)