| http://www.w3.org/ns/prov#value | - Unfortunately, cloning tends to pose many difficulties in object-oriented languages, since the type of object returned by the clone method will vary depending upon the type of object performing it, and since base types may be used to derive some types that allow cloning and some that do not.As I see it, there are four types of classes when it comes to cloning:Those that simply cannot be clonedThos
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