def vals_are_unique(offset, *content):
    """
    Determine if the values at offset of the content arrays are all unique.
    :param offset: The offset into the content arrays to check.
    :param content: The content arrays.
    :return: True if content[0][offset] != content[1][offset] != ..., False otherwise.
    """
    uniques = set()
    for arr in content:
        check = arr[offset]
        if check in uniques:
            return False
        uniques.add(check)
    return True