Clojure macro inside another macro: how to generate string from symbol -

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The title is not 100% accurate, but let me show you this problem: 

   
 In short: there is a macro called  defxetch  (this is part of lib  quil , but it does not matter). This signature is basically the  defxetch [applet -name] is & amp; Options] , and it creates something and it is tied in a var called  applet-name . For the reason, I want to wrap it in another macro - in another thing - - takes an  applet-name  parameter, to name that name as  applet-name-viewport  , And I go to  defsketch . However, I'm unable to  (pprint (macroexpand (nvp test-name 500 500)) , me  
  To understand how to use macroxpand at the above code (def (closeor.core / symbol (closeor.core / stroke (cl.j.or / name 'my-namespace.core / test-name) "-viewport") (quil.applet / applet: Title (clojure.core / name 'my-namespace.core / test-name)))   
  (clojure.core / symbol (clojure.core / str (clojure.core / Name "my-namespace.core / test-name" "-viewport")  - This part looks good, but it should be evaluated before passing the internal macro by any means ... < / P>  
 
 
 You have to leave the form that generates new symbol instead of the original symbol.  
 Here is a small example of how to use a  defn  for the macro internal macro:  
  (defmacro mydefn [name & Amp; body] `(defn ~ name ~ @ body) (defmacro defnview [n & amp; body]` (mydefn ~ (symbol (str (name n) "-viewport")) ~ ~ body) ;; Or defmacro defnview [n & amp; body] ([n (symbol (str (name n) "-details"))] `(mydefn ~ n ~ @ body)))   
 Example:  
  (defnview foo [a] a) ;; = & Gt; # 'User / FU-viewport (FU-viewport 1) ;; = & Gt; 1 (macroxpand '(defniewuefu [a] a)) ;; = & Gt; (Def foo-viewport (clojure.core / fn ([a] a))

Comments

  1. brightwoods17 February 2019 at 11:13

    शुरुआती के लिए जावा प्रोग्रामिंग के नमूने
    सरल अंकगणित जावा कार्यक्रम

    ReplyDelete

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