On Wed, May 2, 2012 at 4:24 PM, Jim - FooBar(); <jimpil1...@gmail.com>wrote:

> Hey everyone,
>
> I've been trying all morning (more than 3 hours) to improve my macro but
> with little success...basically what I had before i started fiddling with
> it was a macro which would take an expression of the form (1 + 4 * 5 - 1 /
>  2) and would return the expression in prefix form: (/ (- (* (+ 1 4) 5) 1)
> 2)...it would not handle nested parens and no operator precedence...This is
> it:
> ------------------------------**------------------------------**
> ------------------------------**------------------------------**
> ---------------
> (defmacro functionize [macro]
>  `(fn [& args#] (eval (cons '~macro args#))))
>
> (defmacro infix-to-prefix [expr]
> (if-not (empty? (filter #(list? %))  '~expr))
>

This looks suspicious. filter is being called with 1st parameter anon
function, and no second parameter. How does that compile?

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