join(scheme1, scheme2, tuple1, tuple2)  // join t1 and t2 to make tuple t
{
    copy tuple1 to t    // t is the result to be returned
    for (name2, value2, in scheme2, tuple2) // int going through both vectors at the same time
    {
        if (name2 not found in scheme1) add value2 to t;
    }
}