clojure-koans/src/koans/20_partition.clj
Colin Jones 04b3c4a960 Bump koan-engine dependency
Also eliminates some ns forms that we can do without now.

Closes #71
2014-05-02 16:39:13 -05:00

22 lines
834 B
Clojure

(ns koans.20-partition
(:require [koan-engine.core :refer :all]))
(meditations
"To split a collection you can use the partition function"
(= '((0 1) (2 3)) (__ 2 (range 4)))
"But watch out if there are not enough elements to form n sequences"
(= '(__) (partition 3 [:a :b :c :d :e]))
"You can use partition-all to also get partitions with less than 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 the given sequence length"
(= '((0 1 2) (3 4 5) __) (partition 3 3 [:these :are "my" "words"] (range 7))))