List nonmember

Description

Nonmembership of a list

Source: The Art of Prolog

Download

Program source code: list_nonmember.pl

Listing

/*
   nonmember(X,Xs) :- X is not a member of the list Xs.
*/
     nonmember(X,[Y|Ys]) :- X \== Y, nonmember(X,Ys).
     nonmember(X,[]).
 
%  Program 7.5    Nonmembership of a list

Comments

pl/prolog/pllib/list_nonmember.txt · ostatnio zmienione: 2017/07/17 08:08 (edycja zewnętrzna)
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