Named parameters: Difference between revisions

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}</lang>
 
=={{header|Clojure}}==
 
Clojure doesn't have built-in support for named or keyword arguments, but you can use destructuring to achieve a similar effect.
 
<lang lisp>(defn foo [& opts]
(let [opts (merge {:bar 1 :baz 2} (apply hash-map opts))
{:keys [bar baz]} opts]
[bar baz]))</lang>
 
You can also use <code>defnk</code> from <code>clojure.contrib.def</code>, which is a macro that works similarly.
 
<lang lisp>(use 'clojure.contrib.def)
(defnk foo [:bar 1 :baz 2]
[bar baz])</lang>
 
Sample output for both:
 
<pre>user> (foo :baz 123)
[1 123]
 
user> (foo :bar 456)
[456 2]</pre>
 
=={{header|Common Lisp}}==