On Jun 12, 4:58 pm, Chouser wrote:
> > So it looks like when the compiler expands defonce, it actually
> > evaluates a def right then and there, rather than the def only being
> > evaluated when the expansion of the defonce macro is evaluated.
>
> Yes, the var is interned in the namespace at comp
On Fri, Jun 12, 2009 at 4:10 PM, Wrexsoul wrote:
>
> Eh. That works. I tried (import java.io.File) and (import java.io/
> File), as well as (import (java.io File)), mimicking the syntax
> of :import in ns.
>
> That's another of the problems -- some things, like import, are very
> tersely documente
ase conditional
behavior OTHER than defining the global might be desired.
> A couple other comments on your code:
>
> > (defmacro thread [& body]
> > `(Thread. (proxy [Runnable] [] (run [] ~...@body
>
> Clojure functions already implement Runnable, so can be
> written:
&
avoids
.hasRoot and doesn't need the thread macro:
(defmacro defdaemon [nm & body]
`(do
(defonce ~nm nil)
(when ~nm
(.interrupt ~nm))
(def ~nm
(doto (Thread. (fn [] ~...@body))
(.setDaemon true)
(.start)
> (defmacro do-asynch-periodical
Consider this public domain for copyright purposes.
Try it at the repl with:
(defn make-counter [] (let [i (atom 0)] #(do (swap! i + 1) @i)))
(def *counter* (make-counter))
(do-asynch-periodically *xxx* 1 (println (*counter*)))
(do-asynch-periodically *xxx* 1 (println (str "changed!
"
