http://www.4clojure.com/ 문제 풀이 요약
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(= (#(loop [result 0 x %]
(if (empty? x)
result
(recur (+ result (first x)) (rest x))))
'(-1 0 2 3 5 5)) 14)
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The -> macro threads an expression x through a variable number of forms. First, x is inserted as the second item in the first form, making a list of it if it is not a list already. Then the first form is inserted as the second item in the second form, making a list of that form if necessary. This process continues for all the forms. Using -> can sometimes make your code more readable.
user> (-> [2 5 4 1 3 6]
reverse
rest
sort
last)
5
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The -» macro threads an expression x through a variable number of forms. First, x is inserted as the last item in the first form, making a list of it if it is not a list already. Then the first form is inserted as the last item in the second form, making a list of that form if necessary. This process continues for all the forms. Using -» can sometimes make your code more readable
user> (->> [2 5 4 1 3 6]
(drop 2)
(take 3)
(map inc)
(reduce +))
11
