On 26/04/12 19:15, Asranz wrote:
Hi tahnks!
i just need to do that operation. to conbert that string. for
example for sums i did
(defn sum [s]
(apply + (map #(- (int (first %)) (int \0)) (re-seq #"[0-9]" s))))
and it just sums the the numbers but if a have also multiplications,
substracyions and divsions how i do it??
You need to rethink your approach...If you want to transform a piece of
code you can't really do so without macros...otherwise your argument
(the infix expression) will be evaluated before your function is even
called - yielding compile error (cos it is not understandable from
clojure's point of view)...
Jim
ps:also i'm pretty sure you don't need regex for something like
this....you're just making your life difficult!
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