clojure-koans/src/koans/20_partition.clj

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2012-08-04 10:11:33 +00:00
(meditations
"To split a collection you can use the partition function"
(= '((0 1) (2 3)) (__ 2 (range 4)))
2013-02-26 02:46:19 +00:00
"But watch out if there are not enough elements to form n sequences"
2012-08-04 10:11:33 +00:00
(= '(__) (partition 3 [:a :b :c :d :e]))
"You can use partition-all to also get partitions with less then n elements"
(= __ (partition-all 3 (range 5)))
"If you need to, you can start each sequence with an offset"
(= '((0 1 2) (5 6 7) (10 11 12)) (partition 3 __ (range 13)))
"Consider padding the last sequence with some default values.."
(= '((0 1 2) (3 4 5) (6 :hello)) (partition 3 3 [__] (range 7)))
".. but notice that they will only pad up to given sequence length"
(= '((0 1 2) (3 4 5) __) (partition 3 3 [:this :are "my" "words"] (range 7))))