def _is_set(self, flag):
        return self.value & flag == flag
Standard deviation of the sample weighted average of values x with
dataset/ETHPy150Open Yubico/python-yubico/yubico/yubikey_config_util.py/YubiKeyConfigBits._is_set--crossover with--dataset/ETHPy150Open cesium-ml/cesium/cesium/science_features/common_functions.py/weighted_average_std_err