ORIGINAL
(defn update-positions [snake apple]
(dosync
(if (eats? @snake @apple)
(do (ref-set apple (create-apple))
(alter snake move :grow))
(alter snake move)))
nil)
WITHOUT do
(defn update-positions [snake apple]
(dosync
(if (eats? @snake @apple)
((ref-set apple (create-apple)) <------ Removed "do" from
here
(alter snake move :grow))
(alter snake move)))
nil)
Both versions work, so why does the "do" on line 4 contribute?
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