On Apr 30, 2013 5:32 AM, "Liao Pengyu" <arise...@gmail.com> wrote: > (def fib > (lazy-seq > (concat [0 1] (map + fib (rest fib))))) > (take 10 fib) ;; Bomb
The expression (rest fib) forces fib, which is the lazy seq you are already trying to force when you eval (rest fib). > (def fib > (concat [0 1] (lazy-seq (map + fib (rest fib))))) ;; Works well Whereas here, fib has already been forced when you call (rest fib), > (def fib > (lazy-cat [0 1] (map + fib (rest fib)))) ;; Works well And here forcing fib doesn't eval (rest fib). > All of the above program using lazy-seq As you have seen, lazy-seq is not a silver bullet. -- Stephen Compall If anyone in the MSA is online, you should watch this flythrough. -- -- You received this message because you are subscribed to the Google Groups "Clojure" group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en --- You received this message because you are subscribed to the Google Groups "Clojure" group. To unsubscribe from this group and stop receiving emails from it, send an email to clojure+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out.
