Re: idiomatic way to use cond.
I can think of a couple ways to break it up. First, you can pull the expressions inside of each do form out into separate functions. Whether they are defined above the current function or inside it using let, both would clean it up and give a label to each of the groups of expressions (the function name). Otherwise if you have duplicated expressions in the do forms, then you could do the minimum amount possible in the cond and put it in a let to keep the return value, and then use it to execute the rest of the code within the body of the let. One of those seems to work for me most of the time, but I could be missing something too... Cheers, Jeff On Dec 28, 4:59 am, RD rdsr...@gmail.com wrote: Hello All, When every I write clj code that involves cond. It always involves a do in almost all of the classes. somethiing like (cond condition1 (do exp1 exp2 exp) condition2 (do exp1 exp2 ...) true (do ...)) Is there a better way (without the explicit do) to write this?? regards, rdsr -- 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
Re: idiomatic way to use cond.
Hi, Am 28.12.2009 um 04:59 schrieb RD: (cond condition1 (do exp1 exp2 exp) condition2 (do exp1 exp2 ...) true (do ...)) Is there a better way (without the explicit do) to write this?? Since the results of exp1 up to expN-1 are thrown away you are doing them only for side effects. Try to restructure your code in a more functional fashion, so that you get (let [res1 exp1 res2 exp2 ...] (expN resN-1)). Then tho do will be gone. If the side effects are necessary (eg. I/O) the ugly do should remind you of this. If the expression chain gets too long, you should refactor them in their own functions. Sincerely Meikel -- 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
idiomatic way to use cond.
Hello All, When every I write clj code that involves cond. It always involves a do in almost all of the classes. somethiing like (cond condition1 (do exp1 exp2 exp) condition2 (do exp1 exp2 ...) true (do ...)) Is there a better way (without the explicit do) to write this?? regards, rdsr -- 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
