referential identity造句

Instances of value types do not have referential identity nor referential comparison semantics-equality and inequality comparisons for value types compare the actual data values within the instances, unless the corresponding operators are overloaded.
In contrast, reference types have the notion of referential identity-each instance of a reference type is inherently distinct from every other instance, even if the data within both instances is the same.
It's difficult to find referential identity in a sentence. 用referential identity造句挺难的