2 Examples top

• link | changes

  ;;getting meta-data for a defined symbol (as opposed to what it's pointing to.
  
  user=> meta
  #<core$meta clojure.core$meta@2e257f1b>
  
  user=> (var meta)
  #'clojure.core/meta
  
  user=> (meta (var meta))
  {:ns #<Namespace clojure.core>, :name meta, :file "clojure/core.clj", :line 178, :arglists ([obj]), :doc "Returns the metadata of obj, returns nil if there is no metadata.", :added "1.0"}
  

  ;;getting meta-data for a defined symbol (as opposed to what it's pointing to. user=> meta #<core$meta clojure.core$meta@2e257f1b> user=> (var meta) #'clojure.core/meta user=> (meta (var meta)) {:ns #<Namespace clojure.core>, :name meta, :file "clojure/core.clj", :line 178, :arglists ([obj]), :doc "Returns the metadata of obj, returns nil if there is no metadata.", :added "1.0"}
• link | changes

  => *clojure-version*
  {:major 1, :minor 5, :incremental 0, :qualifier "RC17"}
  => var
  ;CompilerException java.lang.RuntimeException: Unable to resolve symbol: var in this context, compiling:(NO_SOURCE_PATH:1:42) 
  => (var)
  ;CompilerException java.lang.NullPointerException, compiling:(NO_SOURCE_PATH:1:1) 
  => (var 1)
  ;CompilerException java.lang.ClassCastException: java.lang.Long cannot be cast to clojure.lang.Symbol, compiling:(NO_SOURCE_PATH:1:1) 
  => (var defn)
  #'clojure.core/defn
  => (var defn 1 2 3 4)
  #'clojure.core/defn
  

  => *clojure-version* {:major 1, :minor 5, :incremental 0, :qualifier "RC17"} => var ;CompilerException java.lang.RuntimeException: Unable to resolve symbol: var in this context, compiling:(NO_SOURCE_PATH:1:42) => (var) ;CompilerException java.lang.NullPointerException, compiling:(NO_SOURCE_PATH:1:1) => (var 1) ;CompilerException java.lang.ClassCastException: java.lang.Long cannot be cast to clojure.lang.Symbol, compiling:(NO_SOURCE_PATH:1:1) => (var defn) #'clojure.core/defn => (var defn 1 2 3 4) #'clojure.core/defn