Hi Varun - the best advice I think I could give you is to spend a whole bunch of time on https://clojuredocs.org and https://www.conj.io (any others?) familiarising yourself with the core API. There is also the official http://clojure.org/api/api but I find the example on clojuredocs invaluable.
For me, my first few months was spent writing a whole bunch of unidiomatic and ugly code badly replicating what was already in the core libs. In fact, there was a bit of a bad smell of writing lots of Clojure code as the core lib provides a _lot_ more than you might think (I came from Java). Also, you might want to invest in either core.typed or prismatic schema for validating shapes of data. I think Brian Marick of Midje fame has a similar answer but I can't recall the name. Oh, and this community is great - keep asking questions and someone will answer :-) - are you on slack? On 15 April 2016 at 03:42, Varun Kamra <varun.kamr...@gmail.com> wrote: > Oh, I didn't even know we could loop using dotimes. Thanks for the > explanation and for the code as well. > > > On Thursday, April 14, 2016 at 6:58:57 PM UTC-7, Bobby Eickhoff wrote: >> >> The result of the last expression evaluated is always returned. Hence, >> the shape of the function is what determines the points of return and the >> returned values. For example, if you're entire function is defined as one >> (if ...) statement, there are two possible points of return, each of the >> branches. >> >> But I think you're probably asking if you can return early from a >> function, like in Java or Javascript. No, there's no return "statement" in >> Clojure. You just have to structure your functions a certain way. >> >> Here's an alternate version of your pyramid function which uses (recur >> ...). This is equivalent to calling pyramid recursively, but the compiler >> is able to optimize this recursive call away. In other words, it will never >> overflow the stack. >> >> (defn pyramid [n] >> (when (pos? n) >> (dotimes [_ n] >> (print "* ")) >> (println) >> (recur (dec n)))) >> >> >> >> >> On Thursday, April 14, 2016 at 9:23:58 PM UTC-4, Varun Kamra wrote: >>> >>> On Thursday, April 14, 2016 at 5:58:33 PM UTC-7, Varun Kamra wrote: >>> > Hey guys I am new to clojure. I was just experimenting by printing a >>> > pyramid of stars 5 rows and 5 column. Here's the code: >>> > >>> > (defn pyramid [j i] >>> > (if (and (= i 0) (neg? >>> > (println "There's your pyramid")) >>> > (if (= j 0) >>> > (do (println) >>> > (pyramid (- i 1) (- i 1))) >>> > (do (print "* ") >>> > (pyramid (- j 1) i)))) >>> > >>> > It's working fine till it prints the pyramid, but after printing it, it >>> > continues printing a lot of stars and eventually fail with stack >>> > overflow. I >>> > am guessing that a if I put a negative check I can prevent it but I wanted >>> > to know if there's a way to return from the recursive call instead. >>> >>> I understood now, it was going in the else condition of the if so here'so >>> the modified code >>> >>> (defn pyramid [j i] >>> (if (= i 0) >>> (println "There's your pyramid")) >>> (if (= j 0) >>> (do (println) >>> (pyramid (- i 1) (- i 1)))) >>> (if (not (neg? j)) >>> (do (print "* ") >>> (pyramid (- j 1) i)))) >>> >>> But my question still stands if ther's a way to return from function. > > -- > 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 > --- > You received this message because you are subscribed to the Google Groups > "Clojure" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to clojure+unsubscr...@googlegroups.com. > For more options, visit https://groups.google.com/d/optout. -- 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 --- You received this message because you are subscribed to the Google Groups "Clojure" group. To unsubscribe from this group and stop receiving emails from it, send an email to clojure+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
