I don't get why we have to use a second 'back tick'. I thought one backtick at the beginning and then we use ~ and ~@ when needed.
On Tuesday, June 18, 2013 2:09:44 AM UTC+2, Carlo wrote: > > I can't speak to the issues that Gary raised, but I can help you with your > macro. > > (defmacro servlet [servlet-name & meths] > `(reify Servlet > ~@(for [meth meths] > (let [[method-name args & body] meth > method-name (hyphenated->camel-case method-name)] > `(~method-name ~args ~@body))))) > > The key here is to keep track of when things are run. The `for` must be > run at compile time in order to generate the code we want, so we have to > escape it with ~@. The code that the `for` creates (in the form of a list) > must then be (quasi-)quoted again by the backtick. > > Macros certainly take some getting used to. > > > On Tue, Jun 18, 2013 at 8:12 AM, Hussein B. <hubag...@gmail.com<javascript:> > > wrote: > >> Here is my fourth attempt: >> >> (defmacro servlet [servlet-name & meths] >> `(reify Servlet >> (for [meth ~meths] >> (let [[method-name args & body] ~meth >> camel-case-method-name (hyphenated->camel-case >> ~method-name)] >> (camel-case-method-name ~args ~@body))))) >> >> Still it is not working :( >> >> How to fix it? >> >> On Tuesday, June 18, 2013 12:04:50 AM UTC+2, Gary Trakhman wrote: >> >>> Unquoting 'camel-case-method-name' is going to try and replace the >>> symbol with it's value during compile-time in the context of the macro >>> itself. >>> >>> also, reify isn't going to work if you need a named class to actually >>> wire up your servlet, for example with a web.xml. Also, consider that >>> you'll need some AOT compilation for the container to actually see the >>> servlet class. >>> >>> >>> On Mon, Jun 17, 2013 at 4:38 PM, Hussein B. <hubag...@gmail.com> wrote: >>> >>>> Hi, >>>> >>>> My target is to have something like this: >>>> >>>> (servlet "ArticlesServlet" >>>> (do-get [this request response] >>>> (println "Get Request")) >>>> (do-post [this request response] >>>> (println "Post Request"))) >>>> >>>> >>>> I started with this: >>>> >>>> (defmacro servlet [servlet-name meths] >>>> `(reify Servlet >>>> (for [meth ~@meths] >>>> (let [[method-name params & body] meth >>>> camel-case-method-name (hyphenated->camel-case >>>> method-name)] >>>> (~camel-case-method-name ~@body))))) >>>> >>>> But of course, it is not working :) >>>> >>>> I get: >>>> >>>> CompilerException java.lang.RuntimeException: Unable to resolve symbol: >>>> camel-case-method-name in this context >>>> >>>> Why? >>>> >>>> And of course, feel super free to correct my Macro :) >>>> >>>> Thanks for help and time. >>>> >>>> -- >>>> -- >>>> You received this message because you are subscribed to the Google >>>> Groups "Clojure" group. >>>> To post to this group, send email to clo...@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+u...@**googlegroups.com >>>> >>>> For more options, visit this group at >>>> http://groups.google.com/**group/clojure?hl=en<http://groups.google.com/group/clojure?hl=en> >>>> --- >>>> You received this message because you are subscribed to the Google >>>> Groups "Clojure" group. >>>> To unsubscribe from this group and stop receiving emails from it, send >>>> an email to clojure+u...@**googlegroups.com. >>>> >>>> For more options, visit >>>> https://groups.google.com/**groups/opt_out<https://groups.google.com/groups/opt_out> >>>> . >>>> >>>> >>>> >>> >>> -- >> -- >> You received this message because you are subscribed to the Google >> Groups "Clojure" group. >> To post to this group, send email to clo...@googlegroups.com<javascript:> >> Note that posts from new members are moderated - please be patient with >> your first post. >> To unsubscribe from this group, send email to >> clojure+u...@googlegroups.com <javascript:> >> 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 unsubscribe from this group and stop receiving emails from it, send an >> email to clojure+u...@googlegroups.com <javascript:>. >> For more options, visit https://groups.google.com/groups/opt_out. >> >> >> > > -- -- 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 unsubscribe from this group and stop receiving emails from it, send an email to clojure+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out.
