(v 0) and the like already work when v is a vector. You can also do
something like this:
(defn proper-rem [a b]
(if (neg? a)
(dec (- b (rem (- (inc a)) b)))
(rem a b)))
(defn at [v idx]
(v (proper-rem idx (count v))))
(defn r [start end v]
(let [c (count v)
s (proper-rem start c)
e (proper-rem end c)
s2 (min s e)
e2 (max s e)
(subvec v s2 e2)))
(at '[a b c d e f g] -1)
g
(r '[a b c d e f g] -2 2)
[c d e]
On Wed, Jun 26, 2013 at 11:01 PM, Greg <g...@kinostudios.com> wrote:
> There is one feature that I really miss from newLISP and seems like it
> could be a natural extension to Clojure, and that is implicit indexing for
> lists and arrays.
>
> Clojure already has something similar in its use of keywords to act as
> functions that look themselves up in a map.
>
> This is basically the same concept, but using numbers instead. Implicit
> indexing creates a really elegant syntax for finding elements and ranges in
> a list or array. Here's an example:
>
> > (setf mylist '(a b c d e f g))
> (a b c d e f g)
> > (mylist 0)
> a
> > (mylist -1)
> g
> > (0 3 mylist)
> (a b c)
>
>
> Has this been considered already? Would this be something that could be
> added to the language syntax?
>
> Thanks for your consideration!
>
> Sincerely,
> Greg
>
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