(nnext x)
Same as (next (next x))
<pre>user=> (nnext '(1 2 3))\r
(3)\r
</pre>\r
\r
<pre>user=> (nnext [])\r
nil \r
</pre>\r
\r
<pre>user=> (nnext ['(a b c) '(b a c) '(c b a) '(a c b)])\r
((c b a) (a c b)) \r
</pre>\r
\r
<pre>user=> (nnext {:a 1, :b 2, :c 3, :d 4})\r
([:c 3] [:d 4]) \r
</pre>\r
\r
<pre>user=> (nnext #{:a :b :c})\r
(:c)\r
</pre>\r