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• link | changes

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

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

  ;; some gotchas to be aware of:
  
  user=> (keyword "user" 'abc)
  ClassCastException clojure.lang.Symbol cannot be cast to java.lang.String  clojure.core/keyword (core.clj:558)
  user=> (keyword *ns* "abc")
  ClassCastException clojure.lang.Namespace cannot be cast to java.lang.String  clojure.core/keyword (core.clj:558)
  user=> (keyword 'user "abc")
  ClassCastException clojure.lang.Symbol cannot be cast to java.lang.String  clojure.core/keyword (core.clj:558)
  
  
  ;; Warning - the following generated keywords are non-conformant and may wreak
  ;; serious havoc in the near/far future when least expected...
  
  user=> (keyword "abc def")
  :abc def
  user=> (keyword "123def")
  :123def
  user=> (keyword "/abc/def/ghi")
  :/abc/def/ghi
  

  ;; some gotchas to be aware of: user=> (keyword "user" 'abc) ClassCastException clojure.lang.Symbol cannot be cast to java.lang.String clojure.core/keyword (core.clj:558) user=> (keyword *ns* "abc") ClassCastException clojure.lang.Namespace cannot be cast to java.lang.String clojure.core/keyword (core.clj:558) user=> (keyword 'user "abc") ClassCastException clojure.lang.Symbol cannot be cast to java.lang.String clojure.core/keyword (core.clj:558) ;; Warning - the following generated keywords are non-conformant and may wreak ;; serious havoc in the near/far future when least expected... user=> (keyword "abc def") :abc def user=> (keyword "123def") :123def user=> (keyword "/abc/def/ghi") :/abc/def/ghi