i forgot about the wiki. why is this maintained in a totally different page from clojure.org? I should be looking at these examples:
http://en.wikibooks.org/wiki/Clojure_Programming/Examples/API_Examples On Mon, Jan 12, 2009 at 9:15 PM, e <evier...@gmail.com> wrote: > I give up. I don't know what's wrong and I don't want to just punt and > go on to a totally different implementation. Can while loops have more that > one statement in the body? Maybe it's something dumb. > > I'm not turning my back on what people say about loop/recur or functional > programming. I'm just trying to accomplish my original goal of constructing > an iterative-looking example. I get the added benefit of learning how > reference dereference works, while loops . . .and how to read the errors. > Or not. I'm not making headway. > > I just want to get this out of my system, but I'm getting some class cast > exception and no useful line number. Can you not set a variable to a > vector? > > the definition passes (compiles?), but when I call it I get a runtime > error. I've made the code as simple (broken down) as possible. listmerge > works (because I didn't write it myself). > > (defn listmerge [l1 l2] > (let [l1first (first l1) l2first (first l2)] > (cond > (empty? l1) l2 > (empty? l2) l1 > (< l1first l2first) > (cons l1first (listmerge (rest l1) l2)) > :else > (cons l2first (listmerge (rest l2) l1)))))) > > (defn msort [toSort] > (with-local-vars [my-list (for [x toSort] [x]) l1 0 l2 0] > (while (rest @my-list) > (var-set l1 (first @my-list)) > (var-set l2 (second @my-list)) > (var-set my-list (drop 2 @my-list)) > (var-set my-list (concat @my-list (listmerge [...@l1] [...@l2])))) > @my-list)) > > (msort [64 45 2 67 1]) > > Thanks again. > > > On Mon, Jan 12, 2009 at 1:10 PM, James Reeves > <weavejes...@googlemail.com>wrote: > >> >> On Jan 12, 5:24 am, e <evier...@gmail.com> wrote: >> > It's funny, whenever I tried to be all safe like this and take the time >> to >> > make stuff safe in C++, coworkers would say, "we are grown-ups. At some >> > point you gotta stop being a paranoid programmer. >> >> Given that software bugs are a very common occurrence, I'd say we're >> far from being paranoid enough :) >> >> > Another thing is to make the common case easy . . . .and uh, mutable >> local >> > variables are pretty darn common, >> >> In imperative languages, yes, but not really in functional languages. >> I've written a fair amount of Clojure code, and I haven't used with- >> local-vars once. >> >> - James >> >> >> > --~--~---------~--~----~------------~-------~--~----~ 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 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 -~----------~----~----~----~------~----~------~--~---
