Ah, I didn't know about the reduce function. I'll give that a try and thanks a lot.
On Feb 10, 10:42 pm, Brenton <bashw...@gmail.com> wrote: > chaosprophet, > > Clojure wants you to think in terms of sequences instead to loops. > Instead to looping through cat-all and keeping track of the sum, you > want to use map and reduce. > > (reduce + (map #(probability-of-category-given-document % tokens) cat- > all)) > > Brenton > > On Feb 10, 7:14 am, chaosprophet <bg.x...@gmail.com> wrote: > > > Hi guys, > > I'm new to both clojure and functional programming and as an exercise > > in learning Clojure, I decided to write a naive bayes categorizer. I > > have a piece of code wherein I have a doseq inside which i am calling > > a function which returns a value. What I would like to do is have the > > value returned by the function to be added to a particular binding > > (variable), so that at the end of the doseq, I'll have a total sum of > > all values returned. Right now im doing this by using def to rebind > > the value. The exact code I'm using is: > > (def prob-sum 0) > > (doseq [cat cat-all] > > (def prob-sum (+ prob-sum > > (probability-of-category-given-document > > cat tokens)))) > > > I know that using def to rebind is not good practice and I should > > probably be using ref. However, this executes only in a single thread, > > so I'm not sure if it would be appropriate to use ref. > > Also, I realize that I'm abusing the concept of data immutability, but > > in this case I really need this to be mutable. However, I have a gut > > feeling that I'm not really approaching this in the right way (as in > > correct way to do it in a functional language), and I would really > > appreciate it if someone could set me upon the right track. > > > Regards, > > chaosprophet -- You received this message because you are subscribed to the Google Groups "Clojure" group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en
