error()

template<typename T>

const Error & fl::result< T >::error ( ) const

inline

Get the error value.

Returns

Reference to the error

Warning

Returns static descriptive error if called on a success result

Note

Use !ok() to check before calling for proper error handling

Definition at line 102 of file promise_result.h.

                               {
        if (ok()) {
            // Return descriptive error for misuse detection
            static const Error empty_error("No error - result contains success value");
            return empty_error;
        }
        return mResult.template get<Error>();
    }

References fl::get(), mResult, and ok().

Referenced by result(), result(), and error_message().

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