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pl:prolog:pllib:list_member [2019/06/27 15:50] (aktualna)
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 +====== List member ======
 +{{tag>​lists}}
 +===== Description =====
 +Checking for list membership
 +
 +**Source**: ​ The Art of Prolog
 +===== Download =====
 +Program source code: {{list_member.pl}}
 +===== Listing =====
 +<code prolog>
 +/*
 +   ​member_check(X,​Xs) :- X is a member of the list Xs.
 +*/
 +     ​member_check(X,​[X|Xs]).
 +     ​member_check(X,​[Y|Ys]) :- X \== Y, member_check(X,​Ys).
 +
 +%  Program 7.3    Checking for list membership
 +</​code>​
 +===== Comments =====
  
pl/prolog/pllib/list_member.txt · ostatnio zmienione: 2019/06/27 15:50 (edycja zewnętrzna)
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