On Sat, Jan 17, 2009 at 9:09 AM, mbrodersen <morten.broder...@gmail.com>wrote:
> > Hi > > I am having fun learning Clojure but have a problem with the following > code. If you run the code with the ;OK removed then it works. If you > run the code with ;ERROR removed then it doesn't. > > The code is my own implementation of splitting a string into > individual words (just a learning exercise). The error message is: > > java.lang.IllegalArgumentException: No matching method found: > isWhitespace (error.clj:0) > > Which is strange because the ;ERROR line has nothing to do with > isWhitespace? > > Any help would be appreciated. > > Thanks > Morten > ----------------------------------------------------- > > (defn line-skip-ws [line] > (cond > (not (first line)) > "" > (Character/isWhitespace (first line)) (line-skip-ws (rest > line)) > true > (apply str line))) > > (defn line-split-1 [word line] > (let [c (first line)] > (println "line-split-1" "word:" word "line:" line "c:" c > "class:" (class c)) > (cond > (not c) > [word ""] > (Character/isWhitespace c) [word (apply str > line)] > true > (line-split-1 (str word c) (rest line))))) > > (defn line-split [line] > (let [split (line-split-1 "" (line-skip-ws line))] > (if (= (first split) "") > [""] > ;ERROR (concat [(first split)] (line-split (rest split)))))) > ;OK (concat [(first split)] [])))) > > (doseq [x (line-split " Hello world! ")] (println (format "\"%s\"" > x))) > Hi Morten, When you call line-split with (rest split), you're passing a Clojure sequence of characters, not a string. Then line-skip-ws calls isWhitespace with the sequence and Java doesn't know what to do with it. Try converting (rest split) to a string using (apply str (rest split)). Shawn --~--~---------~--~----~------------~-------~--~----~ 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 -~----------~----~----~----~------~----~------~--~---
