orivej
on Tue, 05 Mar 2013
;; Nothing is printed because map returns a lazy-seq user=> (def foo (map println [1 2 3])) #'user/foo ;; doall forces the seq to be realized user=> (def foo (doall (map println [1 2 3]))) 1 2 3 #'user/foo ;; where (doall (map println [1 2 3])) 1 2 3 (nil nil nil)
AtKaaZ
on Wed, 27 Feb 2013
;; Nothing is printed because map returns a lazy-seq
user=> (def foo (map println [1 2 3]))
#'user/foo
;; doall forces the seq to be realized
user=> (def foo (doall (map println [1 2 3])))
1
2
3
#'user/foo
;; where
(doall (map println [1 2 3]))
1
2
3
(nil nil nil)
=> (doall (map println [1 2 3]) nil)
nil
=> *clojure-version*
{:major 1, :minor 5, :incremental 0, :qualifier "RC17"}
jafingerhut
on Wed, 28 Mar 2012
;; Nothing is printed because map returns a lazy-seq user=> (def foo (map println [1 2 3])) #'user/foo ;; doall forces the seq to be realized user=> (def foo (doall (map println [1 2 3]))) 1 2 3 #'user/foo ;; where (doall (map println [1 2 3])) 1 2 3 (nil nil nil)
philos99
on Wed, 28 Sep 2011
user=> (def foo (map println [1 2 3])) ; Nothing is printed because map returns a lazy-seq #'user/foo user=> (def foo (doall (map println [1 2 3]))) ; doall forces the seq to be realized 1 2 3 #'user/foo ;; where (doall (map println [1 2 3])) 1 2 3 (nil nil nil)
dakrone
on Fri, 30 Jul 2010
user=> (def foo (map println [1 2 3])) ; Nothing is printed because map returns a lazy-seq #'user/foo user=> (def foo (doall (map println [1 2 3]))) ; doall forces the seq to be realized 1 2 3 #'user/foo