On Jan 11, 5:53 pm, e <evier...@gmail.com> wrote:
> this seemed like a clean, nice way to merge to sorted lists into one
> sorted list. I'm not getting clojure syntax, it seems:
>
> (defn listmerge [l1 l2]
> (let [l1first (first l1) l2first (first l2)]
> (if (= l1first nil) l2)
> (if (= l2first nil) l1)
> (if (< l1first l2first)
> (cons l1first (listmerge (rest l1) l2))
> (cons l2first (listmerge (rest l2) l1)))
> ))
You need to nest the ifs, or use a cond:
(defn listmerge [l1 l2]
(let [l1first (first l1) l2first (first l2)]
(cond
(empty? l1) l2
(empty? l2) l1
(< l1first l2first)
(cons l1first (listmerge (rest l1) l2))
:else
(cons l2first (listmerge (rest l2) l1))))))
if statements in Clojure are inline, like the (x if y else z) syntax
in Python.
- James
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