====== List prefix ======
{{tag>lists recursion}}
===== Description =====
Checking if one list is begining of second

**Source**:  PROLOG str. 51 Wydawnictwo PLJ Warszawa 1991 ISBN 83-85190-63-5
===== Download =====
Program source code: {{list_prefix.pl}}
===== Listing =====
<code prolog>
prefiks([], _).
prefiks([X|L1], [X|L2]) :- prefiks(L1, L2).

test :- prefiks([d, f, w, k], [d, f, w, k, r, u, v, z]).</code>
===== Comments =====