Hello,
Evaluating the form
(let [cache (atom {})]
(defmacro eval-cached
"Just as eval, however it will return an existing object if it has
already been evaluated with it"
[obj]
(when-not (contains? @cache obj)
(reset! cache (assoc @cache obj (eval obj))))
(@cache obj))
(defmacro def-cached
"Just as def, however it will return an existing object if it has
already been defined with it"
[fname fbody]
(intern *ns* (symbol fname) (eval-cached fbody))))
Gives me a java.lang.UnsupportedOperationException: Can't eval locals
- for the last line of "def-cached"
However, when I use eval the first defmacro by itself as a closure -
it works perfectly. How can I make those share the cache state without
binding it to a public symbol ?
Best regards,
Stanislav Paskalev
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