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std::error_code::operatorbool(3) C++ Standard Libary std::error_code::operatorbool(3)

NAME

std::error_code::operatorbool - std::error_code::operatorbool

Synopsis


explicit operator bool() const noexcept; (since C++11)


Checks if the error code value is valid, i.e. non-zero.

Parameters


(none)

Return value


false if value() == 0, true otherwise.

Notes


Although this operator is often used as a convenient shorthand to check if any error
was returned, as in if (ec) { /* handle error */ }, such use is not robust: some
error codes, for example, HTTP status code 200, may indicate success as well.

2024.06.10 http://cppreference.com