Cosme Zamudio cosmez
cosmez
/ gist:5250529
Created
March 27, 2013 00:18
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| (define evens-only*&co | |
| (lambda (l col) | |
| (cond | |
| [(null? l) (col '() 1 0)] | |
| [(atom? (car l)) | |
| (cond | |
| [(not (even? (car l))) | |
| (evens-only*&co (cdr l) | |
| (lambda (newlat E U) | |
| (col newlat E (+ U (car l)))))] |
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