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memberchk(X, Y) returns true if X is an element of the list Y
(Unlike "member(X, Y)", no attempt is made to re-evaluate during backtracking.)
Example use:
?- memberchk(a,[a,b,c]). true. ?- memberchk(b,[a,b,c]). true. ?- memberchk(c,[a,b,c]). true. ?- memberchk(d,[a,b,c]). false. ?- memberchk(a,[a,b,a,c]). true. ?- memberchk(X,[a,b,a,c]). X = a.
The text was updated successfully, but these errors were encountered:
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s-webber
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memberchk(X, Y) returns true if X is an element of the list Y
(Unlike "member(X, Y)", no attempt is made to re-evaluate during backtracking.)
Example use:
The text was updated successfully, but these errors were encountered: