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Merge pull request #7 from latacora/revert-6-04-05-Vector-Sets

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Revert " Vector and Sets clj completed"
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pfarwick-latacora 2021-06-15 16:47:54 -05:00 committed by GitHub
commit ed3da94815
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2 changed files with 16 additions and 16 deletions
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20
src/koans/04_vectors.clj
View file

@ -3,31 +3,31 @@
(meditations
"You can use vectors in clojure as array-like structures"
(= 1 (count [42]))
(= __ (count [42]))
"You can create a vector from a list"
(= [1] (vec '(1)))
(= __ (vec '(1)))
"Or from some elements"
(= [nil nil] (vector nil nil))
(= __ (vector nil nil))
"But you can populate it with any number of elements at once"
(= [1 2 ] (vec '(1 2)))
(= [1 __] (vec '(1 2)))
"Conjoining to a vector is different than to a list"
(= [111 222 333] (conj [111 222] 333))
(= __ (conj [111 222] 333))
"You can get the first element of a vector like so"
(= :peanut (first [:peanut :butter :and :jelly]))
(= __ (first [:peanut :butter :and :jelly]))
"And the last in a similar fashion"
(= :jelly (last [:peanut :butter :and :jelly]))
(= __ (last [:peanut :butter :and :jelly]))
"Or any index if you wish"
(= :jelly (nth [:peanut :butter :and :jelly] 3))
(= __ (nth [:peanut :butter :and :jelly] 3))
"You can also slice a vector"
(= [:butter :and](subvec [:peanut :butter :and :jelly] 1 3))
(= __ (subvec [:peanut :butter :and :jelly] 1 3))
"Equality with collections is in terms of values"
(= (list 1 2 3) (vector 1 2 3)))
(= (list 1 2 3) (vector 1 2 __)))

12
src/koans/05_sets.clj
View file

@ -4,19 +4,19 @@
(meditations
"You can create a set by converting another collection"
(= #{3} (set [3]))
(= #{3} (set __))
"Counting them is like counting other collections"
(= 3 (count #{1 2 3}))
(= __ (count #{1 2 3}))
"Remember that a set is a *mathematical* set"
(= #{1 4 3 2 5} (set '(1 1 2 2 3 3 4 4 5 5)))
(= __ (set '(1 1 2 2 3 3 4 4 5 5)))
"You can ask clojure for the union of two sets"
(= #{1 2 3 4 5} (set/union #{1 2 3 4} #{2 3 5}))
(= __ (set/union #{1 2 3 4} #{2 3 5}))
"And also the intersection"
(= #{2 3} (set/intersection #{1 2 3 4} #{2 3 5}))
(= __ (set/intersection #{1 2 3 4} #{2 3 5}))
"But don't forget about the difference"
(= #{1 4} (set/difference #{1 2 3 4 5} #{2 3 5})))
(= __ (set/difference #{1 2 3 4 5} #{2 3 5})))