On Tue, Oct 7, 2008 at 9:30 PM, Martin DeMello <[EMAIL PROTECTED]> wrote:
>
> How do you make a two-dimensional array of a given size? (e.g. (make-
> array '(i j)) in common lisp)
>
> I want to do stuff like, e.g., representing a chessboard, where I can
> index into cells and update them.
For something like that, I think I'd want to use a clojure persistent
data structure -- perhaps a sorted-map or hash-map using a vector for
each key:
(assoc board [4 1] "black king")
Rich used a vector of vectors in his ants demo:
(let [row (vec (replicate 8 nil))
board (vec (replicate row 8))]
(assoc board 1 (assoc (board 1) 5 "black pawn")))
If you're really sure you want a non-thread-safe mutable Java array,
you can get an 8x8 array of Objects:
(make-array Object 8 8)
--Chouser
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