Hi all,
Is it possible to have a structure nested within a structure in
Clojure? Consider the following code:
(defstruct rect :height :width)
(defstruct color-rect :color (struct rect))
(defn
#^{:doc "Echoes the details of the rect passed to it"}
echo-rect
[r]
(println (:color r))
(println (:height r))
(println (:width r)))
(def first-rect (struct rect 1 2))
;(def c-rect1 (struct color-rect 249 first-rect)) ;form 1
;output "249 nil nil"
(def c-rect1 (struct color-rect 249 1 2)) ;form 2
;output "Too many arguments to struct constructor
(echo-rect c-rect1)
Of course this is a contrived example but there are cases where I want
to break a large data structure into smaller substructures to make
code easier to maintain. As the comments indicate if I do form 1 I get
"249 nil nil" but if I do form 2 I get "Too many arguments to struct
constructor".
If I'm approaching this issue in the wrong way, please tell me what I
should be doing. I did search this group but I failed to turn up
anything that seemed helpful.
--
Onorio Catenacci
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