List Tutorial Exercise 10

For the list [a, b, c, d], the result is ((a = b) = c) = d, which will compare a and b to produce a 1 or 0, which is then compared with c to produce another 1 or 0, which is then compared with d. This is not at all what Joe wanted.

Here's a more correct method:

1:  [7, 7, 7, 8, 7]      2:  [7, 7, 7, 8, 7]
    .                    1:  7
                             .

  ' [7,7,7,8,7] RET          RET v r 1 RET

1:  [1, 1, 1, 0, 1]      1:  0
    .                        .

    V M a =                  V R *