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mattdeboard/gist:1074055

Forked from amalloy/gist:1074054
Created July 9, 2011 23:34
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gistfile1.txt
def foo():
for x in range(5):
yield x
yield x*2
(letfn [(first [x]
(lazy-seq
(when (<= x 5)
(cons x (second x)))))
(second [x]
(lazy-seq
(cons (* 2 x)
(first (inc x)))))]
(first 1))
;; (1 2 2 4 3 6 4 8 5 10)
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