On Oct 30, 9:22 am, Dennis Haupt <d.haup...@googlemail.com> wrote: > -----BEGIN PGP SIGNED MESSAGE----- > Hash: SHA1 > > 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? > -----BEGIN PGP SIGNATURE----- > Version: GnuPG v2.0.14 (MingW32) > Comment: Using GnuPG with Mozilla -http://enigmail.mozdev.org/ > > iQIcBAEBAgAGBQJOrV29AAoJENRtux+h35aGEfAP/AjDZ7VpZOB7xg6xuhWfe0UO > pKH4WG5CDWF4MdezuWvS1n3D6V60cLV2DwdIS5K8TYBHnYKe6iKQwdpssNpDe4HE > 3MwmYQIF8X4rbezH5XXhyR1WnWBAKJLrkTg1oB6SJNvUlotF8SnhjYTmROXX9sfV > OE+AiR0Mt8QoxKGnCBQOSDhAw0IMVdKpuAqTbfggUVJD1mQTY+fHA3kwFfh+k2UR > XWcYxRTFIEcK3guVzKBYk0FyBT9A6xBu88En7yzgBUC9fqwwmzN/Q4msIXVq2Ep4 > /7p28YQnLEa+PJmQJlLN5bwEBbrsyMAvyvmVU4JbUznIc+o2mCx2Lny9Bv64NAYS > aesIxwp9Qn4enkYtvqdSfyTonEZRyA+O5gmcjPgpZfIuHYiVPgP2Kibr36T9TU5L > CjnKblyRvHyM0a0jo2hfh3D7HNPBzp11aWuB5/wJ3pxqL9yjzdmSKfTW8SWoKgYL > yObnt3e/d4Zm+yZ2+J/THP4AtTZfo4M365Swo/rypDjuecwvOXyTiGA+nbZUXF/k > j8ptkAvOQQX3GZ1btzWE4Wh9+Q0eO6wO9IopNwvwnffC9k7OZ0AebYfynzsBwv/V > LTtNKC+HGrcpvw1gxpF4rnkmjjPWHtn413GwKLNaGMBVmTZ05gofIuR2sQijBRfy > 6JF2sFkMro16WxcGf0rw > =estl > -----END PGP SIGNATURE----- It looks like you are using a normal quote instead of a backquote in the definition of times.
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