On Mar 10, 12:46 pm, Damien Lepage <damienlep...@gmail.com> wrote:
> Hi
>
> I wrote a function to transform a variable number of arguments into embedded
> maps.
> Here is what it does:
>
> > (enmap 1 2)
> {1 2}
> > (enmap 1 2 3)
> {1 {2 3}}
> > (enmap 1 2 3 4)
> {1 {2 {3 4}}}
> > (enmap 1 2 3 4 {5 6 7 8})
>
> {1 {2 {3 {4 {5 6, 7 8}}}}}
>
> Here is my implementation:
>
> (defn enmap [arg & args]
> (if-let [more (butlast args)]
> (let [k (last more), v (last args)]
> (if-let [even-more (butlast more)]
> (apply enmap arg (concat even-more (list (hash-map k v))))
> (enmap arg (hash-map k v))))
> (apply hash-map arg args)))
>
> Two things bother me:
>
> - Is there a way to make this function less complicated? without
> recursion maybe?
> - Is there something simpler than (concat even-more (list (hash-map k
> v)) to append an element at the end of a sequence?
>
I sure hope so, because I don't even understand how that works ;-)
How about this:
(defn enmap [arg & more]
(if more {arg (apply enmap more)} arg))
- Chris
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