Created
November 3, 2015 17:06
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Columnwise summing in Scheme
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| (define d | |
| '((1 2 3 4) | |
| (4 5 6 7) | |
| (7 8 9 10) | |
| (8 9 10 11) | |
| (1 2 3 4))) | |
| (apply map + d) |
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