Validate if the values are validated one by one in order.

def _validated(self, values):
        """Validate if the values are validated one by one in order."""
        if self.length != len(values):
            raise NotValid(
                "%r does not have exactly %d values. (Got %d.)" % (
                    values, self.length, len(values)))
        return type(self.schemas)(
            self.schemas[i].validate(v) for i, v in enumerate(values))