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i played around a bit
(defmacro times [times & exprs]
'(let [countdown# ~times]
(loop [remaining# countdown#]
(when (< 0 remaining#)
~@exprs
(recur (dec remaining#))))))
(defmacro forloop [[i end] & code]
`(let [finish# ~end]
(loop [~i 0]
(when (< ~i finish#)
~@code
(recur (inc ~i))))))
the second one works fine:
(forloop [a 4] (println a)
but when i try to do the loop without an externally applied counter
variable, i get a runtimeerror: "Can't take value of a macro"
what exactly does it mean? it also happend when using expandmacro, so
i guess my error is really, really obvious. but what is it?
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