Re: Make a loop in a loop
'doseq instead 'for works fine: (doseq [y (range 1999 2011), w (range 1 52)] (print-data y w)) On Jul 7, 11:14 am, Stuart Halloway wrote: > This usage of for is ill-advised: for is not a loop, it is a comprehension. > This will not do what you want if, for example, you assign the result of for > to a variable instead of entering it at the REPL. > > Nurullah's response on this thread shows a nice separation of building the > (lazy) structure and printing it. > > Stu > > > (for [y (range 1999 2011) w (range 1 52)] (println "year=" y "w=" w)) > > > On Jul 7, 2010, at 10:47 AM, uap12 wrote: > > >> Hi! > >> I try to make a printout witch vill have year 1999->2010 and every > >> week > >> Eg. > >> Year=1999 Week=1 > >> Year=1999 Week=2 > >> Year=1999 Week=3 > >> Year=1999 Week=4 > >> > >> Year=2000 Week=1 > > >> I have made the program in java, but like to try making it in Clojure, > >> but so far i have got > >> > >> (defn print-data [year week] > >> (println (str "Y=" year " W=" week))) > > >> // This would not work and i can't find how to map (print-data with a > >> external variabel and a range > >> // I can set week to a fixed number but not. > >> // Or is this the wrong way of doing it ?? > > >> (defn print-data2 [year] > >> (map (print-data year *) (range 1 53 1))) > > >> (defn run [] > >> (map print-data2 (range 1999 2010 1) ) ) > > >> The program vill call an externa system program, with year and week as > >> input, but for this test i just > >> like to write them... > > >> // Anders > > >> -- > >> 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
Re: dtd question
Yes, you can do this by defining an EntityResolver that corrects the bad system id, define a SAXParser that uses that resolver, and pass the parser into the xml/parse call. Something like this: (import '[javax.xml.parsers SAXParserFactory] '[org.xml.sax EntityResolver InputSource]) (def resolver (proxy [EntityResolver] [] (resolveEntity [public-id system-id] (InputSource. (if (= system-id the-bad-system-id) the-good-system-id system-id) (def parser (doto (.newSAXParser (SAXParserFactory/newInstance)) (.setEntityResolver resolver))) (defn parse-xml [source] (xml/parse source parser)) On Jun 29, 8:18 pm, Manfred Lotz wrote: > Hi there, > I got a directory tree of xml documents all having the same dtd. > However the dtd file is not where the DOCTYPE SYSTEM entry says it is. > > Currently, xml/parse throws an exception that the dtd file will not be > found. > > Is there a possibility to tell xml/parse about a different location > of that dtd file? > > -- > Thanks, > Manfred -- 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: the joys of lisp
Here's some of Rich Hickey's rationale, from an old IRC chat (http:// clojure-log.n01se.net/date/2008-11-06.html): "Clojure doesn't allow user-defined reader macros because they can't be combined - there's no namespace support, unlike for regular macros" "the clash problem is significant - I don't want libraries that can't be combined. Macros work, user-defined reader macros don't" On Jun 27, 8:15 pm, rob levy wrote: > Certainly macros can be dangerous if used recklessly or clumsily, but > > > isn't trusting the programmer and giving him powerful tools what Lisp > > is all about? No other language provides the same power of expression. > > A tour through the Clojure code demonstrates just how powerful this > > idea is and how easy it makes it for the language implementors to > > implement features in a few lines of code that are major bullet-point > > features in other languages. > > In my opinion it is much better to empower developers and build a culture of > good taste and self-discipline, than to limit the language in an attempt to > enforce particular styles. Python is the latter and Lisp is the former. > And Python code is often convoluted because of programmers working around > the limitations imposed by the language. And don't get me started on lines > of code that begin at column 80 etc. ;) > > I would argue in favor of user-defined reader macros for these same reasons, > they are rarely needed but why not maximize the power of Clojure? I think > the last word on this from Rich Hickey was "many things that would otherwise > have > forced people to reader macros may end up in Clojure, where everyone can > benefit from a common approach". To me this is Rich being like Guido von > Rossum, but maybe there are other good reasons behind the decision that he > has either not articulated or I just am not aware of/haven't read. > > Rob -- 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: scala
Bear in mind that Scala is about 5 years older than Clojure, so it's had more time to build up momentum. On Jun 18, 5:56 pm, cageface wrote: > Unfortunately there seems to be a lot more commercial momentum for > Scala though. It's still a blip compared to the mainstream languages > but I'm seeing more and more job posts mentioning it, and hardly any > for Clojure. -- 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: Problems with URL params and http-agent
You don't want to encode the whole URL, just the keys and values in the query string. Something like this: (defn encode-params [request-params] (let [encode #(URLEncoder/encode (str %) "UTF-8") coded (for [[n v] request-params] (str (encode n) "=" (encode v)))] (apply str (interpose "&" coded On Jun 16, 9:21 pm, Timothy Washington wrote: > Hey all, something very weird happens when trying to use the http-agent. If > I execute a) or b) in a browser, I get the desired result XML. > a)http://RESTful/path/to/xml > b)http://RESTful/path/to/xml?_wrap=no&_query=declaredefault element > namespace 'com/interrupt/bookkeeping/users';//user[ @id='one'] > > However, using clojure, If I try the same call, d) in this case will NOT > work. > c) (clojure.contrib.http.agent/http-agent "http://RESTful/path/to/xml";) > ; works > d) (clojure.contrib.http.agent/http-agent > "http://RESTful/path/to/xml?_wrap=no&_query=declaredefault element namespace > 'com/interrupt/bookkeeping/users';//user[ @id='one']") ; doesn't > work > > I've tried url-encoding the url using the below function, but that doesn't > help either. > (defn url-encode [text] > (URLEncoder/encode text "UTF-8")) > > Is the something obvious I'm missing? > Thanks -- 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: macro help
As Lauren Petit points out, you need the macro to define the whole desired result. Something like this should do it: (defmacro defautoroutes [name & paths] (let [getps (for [p paths] `(GET ~(str "/" p) (foo ~p)))] `(defroutes ~name ~...@getps))) (defautoroutes all-routes "one" "two" "three") On May 6, 10:21 pm, Micah Martin wrote: > Hey all, > > I'm having trouble writing a macro and I hoping some one here can help. My > desired result is the following: > > (defroutes all-routes > (GET "/one" (foo "one")) > (GET "/two" (foo "two")) > (GET "/three" (foo "three"))) > > But I'd like to write it like so: > > (defroutes all-routes > (make-foos "one" "two" "three")) > > How do I write make-foos? Does if have to be a macro, or can it be a > function? > > Thanks, > > Micah > > -- > 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 > athttp://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
Re: rand-int with bignums
Per Alex Osborne's reference to BigInteger constructors, here's a random BigInteger function: (defn rand-bigint [#^BigInteger bign, #^Random rnd] (let [bits (inc (.bitLength bign)) bigr (BigInteger. bits rnd)] (-> bign (.multiply bigr) (.shiftRight bits -- 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: Multimethod attribute maps
The attr-map adds key-value pairs to the metadata for the function symbol. The doc for 'defn' makes this clearer. On Jan 20, 8:02 am, Jacek Generowicz wrote: > In Clojure 1.1.0, the documentation states: > > clojure.core/defmulti > ([name docstring? attr-map? dispatch-fn & options]) > Macro > Creates a new multimethod with the associated dispatch function. > The docstring and attribute-map are optional. > > Options are key-value pairs and may be one of: > :default the default dispatch value, defaults to :default > :hierarchy the isa? hierarchy to use for dispatching > defaults to the global hierarchy > > What is the purpose of the attribute map (and, perhaps more > importantly, where could I have found an explanation in the > documentation) ? > > Thank you. -- 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: roll call of production use?
On Nov 24, 11:30 am, John Harrop wrote: > There's a Clojure or a Java library for generating pdf? Apache FOP is an XSL-FO processor than can generate PDF documents. I've heard good things about iText, a Java library for generating or modifying PDF docs. -- 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: Standard calling-a-function function?
(apply arg) On Oct 21, 7:49 pm, samppi wrote: > Is there a standard function that takes one argument and calls it? > That is, the function equivalent to #(%). Or is that the best idiom > there is? --~--~-~--~~~---~--~~ 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 -~--~~~~--~~--~--~---
