On Aug 9, 2:09 pm, Alan <a...@malloys.org> wrote:
> Hi all, I'm new to the group
Welcome!
> I wanted to define a ring function, which takes as input
> N objects, and returns a hash table mapping object N to object N+1
> (mod N). I intended to use this to describe a compass object:
> (ring :w :n :e :s) should result in {:w :n, :n :e, :e :s, :s :w}.
Here's a quick way that seems pretty close to your original:
user> (def x [:w :n :e :s])
#'user/x
user> (zipmap x (rest (cycle x)))
{:s :w, :e :s, :n :e, :w :n}
- Jeff
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