Thanks! On Sep 30, 11:33 am, Ambrose Bonnaire-Sergeant <abonnaireserge...@gmail.com> wrote: > I've opened an issue concerning this bug: > > http://dev.clojure.org/jira/browse/MATCH-21 > > Ambrose > > On Fri, Sep 30, 2011 at 5:04 PM, Ambrose Bonnaire-Sergeant < > > > > > > > > abonnaireserge...@gmail.com> wrote: > > There's a problem with destructuring lists (seems like a bug). > > > If stack is always a vector, it works. > > > (defn rpn' [ stack symb ] > > (match [stack symb] > > [ [x y & z ] "*" ] (apply vector (* x y ) z) > > [ [x y & z ] "+" ] (apply vector (+ x y ) z) > > [ x "sum" ] [ (reduce + x) ] > > [ x y ] (apply vector (read-string y) x) )) > > > (defn calculator'[ input ] > > (first (reduce rpn' [] (re-seq #"\S+" input)))) > > > (calculator' " 1 2 10 2 3 + * sum ") > > ;=> 53 > > > core.match isn't well road tested yet, still early days. > > > Thanks! > > Ambrose > > > On Fri, Sep 30, 2011 at 4:36 PM, Michael Jaaka < > > michael.ja...@googlemail.com> wrote: > > >> Thanks for feedback. But now I'm came across a problem. I'm studying > >> "Learn You a Haskell for Great Good!" and I'm on chapter "Functionally > >> Solving Problems" reading "Reverse Polish notation calculator". > >> I wanted to write it in Clojure. So instead of: > >>http://pastebin.com/QzhbyD6d > >> I wrote:http://pastebin.com/fsChN96D > > >> But as you can see the first try doesn't work as expected. > >> The destruction of stack doesn't work as expected. > >> Expectation is written below as let expression. > > >> Anyone? > > >> On Sep 30, 6:56 am, Kevin Downey <redc...@gmail.com> wrote: > >> > Last I checked matchjure generates fns which break recur (there is an > >> issue > >> > open for it). Trading recursion for matching seems like a bad deal, I > >> > recommend using match instead. > >> > On Sep 29, 2011 4:32 AM, "Christian Pohlmann" < > >> chr.pohlm...@googlemail.com> > >> > wrote: > > >> > > Additionally to core.match there is also matchure [1] which comes with > >> > > a defn-match that can be used like this: > > >> > > (defn-match choose > >> > > ([_ 0] 1) > >> > > ([0 _] 0) > >> > > ([?n ?k] (+ (choose (dec n) (dec k)) (choose (dec n) k)))) > > >> > > This makes defining functions fairly close to what you're used from > >> > Haskell. > > >> > > [1]https://github.com/dcolthorp/matchure > > >> > > Christian > > >> > > On Thu, Sep 29, 2011 at 12:03 PM, Michael Jaaka > >> > > <michael.ja...@googlemail.com> wrote: > >> > >> Hi! > > >> > >> Is there any way to define function with pattern matching in function > >> > >> signature as it is in haskell? > > >> > >> Bye! > > >> > >> -- > >> > >> 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 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 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
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