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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 *