2 Examples top

• link | changes

  ;; Returns a symbol with the given namespace and name.
  ;;
  ;; (symbol name): name can be a string or a symbol.
  ;;
  ;; (symbol ns name): ns and name must both be strings.
  ;;
  ;; A symbol string begins with a non-numeric character and can contain
  ;; alphanumeric characters and *, +, !, -, _, and ?.  (see
  ;; http://clojure.org/reader for details).
  ;;
  ;; symbol does not validate input strings for ns and name, and may return
  ;; improper symbols with undefined behavior for non-conformant ns and
  ;; name.
  
  user=> (symbol 'foo)
  foo
  
  user=> (symbol "foo")
  foo
  
  user=> (symbol "clojure.core" "foo")
  clojure.core/foo
  

  ;; Returns a symbol with the given namespace and name. ;; ;; (symbol name): name can be a string or a symbol. ;; ;; (symbol ns name): ns and name must both be strings. ;; ;; A symbol string begins with a non-numeric character and can contain ;; alphanumeric characters and *, +, !, -, _, and ?. (see ;; http://clojure.org/reader for details). ;; ;; symbol does not validate input strings for ns and name, and may return ;; improper symbols with undefined behavior for non-conformant ns and ;; name. user=> (symbol 'foo) foo user=> (symbol "foo") foo user=> (symbol "clojure.core" "foo") clojure.core/foo
• link | changes

  ;; some gotchas to be aware of:
  
  user=> (symbol "user" 'abc)
  ClassCastException clojure.lang.Symbol cannot be cast to java.lang.String  clojure.core/symbol (core.clj:523)
  user=> (symbol *ns* "abc")
  ClassCastException clojure.lang.Namespace cannot be cast to java.lang.String  clojure.core/symbol (core.clj:523)
  user=> (symbol 'user "abc")
  ClassCastException clojure.lang.Symbol cannot be cast to java.lang.String  clojure.core/symbol (core.clj:523)
  
  
  ;; Warning - the following generated symbols are non-conformant and may wreak
  ;; serious havoc in the near/far future when least expected...
  
  user=> (symbol "abc def")
  abc def
  user=> (symbol "123def")
  123def
  user=> (symbol "/123/def/ghi")
  /123/def/ghi
  user=> (symbol "/abc/def/ghi")
  /abc/def/ghi
  

  ;; some gotchas to be aware of: user=> (symbol "user" 'abc) ClassCastException clojure.lang.Symbol cannot be cast to java.lang.String clojure.core/symbol (core.clj:523) user=> (symbol *ns* "abc") ClassCastException clojure.lang.Namespace cannot be cast to java.lang.String clojure.core/symbol (core.clj:523) user=> (symbol 'user "abc") ClassCastException clojure.lang.Symbol cannot be cast to java.lang.String clojure.core/symbol (core.clj:523) ;; Warning - the following generated symbols are non-conformant and may wreak ;; serious havoc in the near/far future when least expected... user=> (symbol "abc def") abc def user=> (symbol "123def") 123def user=> (symbol "/123/def/ghi") /123/def/ghi user=> (symbol "/abc/def/ghi") /abc/def/ghi