chain->delete

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chain->delete

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chain ->delete: value=any

Delete the first occurrence of object from the chain. Fails if there is no such object. Note that objects are compared by their object identity; not by their contents. Hence, the following fails because the second point is a different instance.

?- new(@ch, chain(point(6,6))).
Yes
?- send(@ch, delete, point(6,6)).
No

See also chain->delete_all and chain->subtract.

See also: chain->delete_all