prolog/problems/lists/len_2/en.py


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# coding=utf-8

name = 'len/2'
slug = 'find the length of a list'

description = '''\
<p><code>len(L, Len)</code>: <code>Len</code> is the length of the list <code>L</code>.</p>
<pre>
  ?- len([1,2,3], Len).
    Len = 3.
</pre>'''

hint = {}