====== Select ======
{{tag>lists}}
===== Description =====
Selecting an element from a list

**Source**:  The Art of Prolog
===== Download =====
Program source code: {{select.pl}}
===== Listing =====
<code prolog>
/*		
	select(X,HasXs,OneLessXs) :- 
		The list OneLessXs is the result of removing one 
		occurrence of X from the list HasXs.
*/

	select(X,[X|Xs],Xs).
	select(X,[Y|Ys],[Y|Zs]) :- select(X,Ys,Zs).

%	Program 3.19: Selecting an element from a list
</code>
===== Comments =====