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| > ct = [1, 2] | |
| => [1, 2] | |
| > sp = [1, 2] | |
| => [1, 2] | |
| > catspec = [[2, 2], [1, 2]] | |
| => [[2, 2], [1, 2]] | |
| > csz = ct.zip sp | |
| => [[1, 1], [2, 2]] | |
| > catspec & csz | |
| => [[2, 2]] | |
| > (catspec & csz).empty? | |
| => false |
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