nice catch and point taken...

however the exact same thing would happen if this was a function...it's just wrong !

Jim


On 14/06/12 19:32, Tassilo Horn wrote:
"Jim - FooBar();"<jimpil1...@gmail.com>  writes:

(defmacro in?
  "Returns true if colle contains elm, false otherwise."
  [colle elm]
`(if (some #{~elm} ~colle) true false))
Except for the complains that this doesn't need to be a macro (which I
agree with), it is also wrong.

       user>  (in? [nil false] nil)
       false
       user>  (in? [nil false] false)
       false

Bye,
Tassilo


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