Method update

training/train_utils/general.py:273–280

(self, val, n=1)

        self._allow_updates = True

    def update(self, val, n=1):
        if n <= 0:
            raise ValueError(f"n must be positive, got {n}")

        self.val = val
        self.sum += val * n
        self.count += n
        self.avg = self.sum / self.count if self.count > 0 else 0.0

    def __str__(self) -> str:
        """String representation showing current and average values."""