fop-marcos

Collection of macros to to help during the FOP exam.
git clone git://git.oshgnacknak.de/fop-marcos.git
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filtermap (173B)

      1 (define (filtermap p f lst)
      2   (cond
      3     [(empty? lst) empty]
      4     [(p (first lst)) (cons (f (first lst)) (filtermap p f (rest lst)))]
      5     [else (filtermap p f (rest lst))]))